Therapy guide · medical education
Contact dermatitis: the full therapy pathway
The rash your own routine can cause, and the one skin condition you can genuinely cure by finding one answer. From stripping the shelf back to patch testing and what dermatologists prescribe when avoidance isn't enough.
Before anything else
Not everyone should start at the bottom of this pathway. These presentations are reasons to
see a clinician without waiting out an over-the-counter trial first.
- Swelling of the face or eyelids, or any tightness of the mouth or throat Seek care quickly
Significant facial swelling deserves same-day assessment, and anything touching the airway is emergency territory — immediate-type reactions to substances like latex or hair dye can escalate in a way ordinary contact dermatitis does not.
- A blistering rash that is spreading rapidly or covers a large area See a dermatologist soon
Severe acute allergic contact dermatitis — a strong hair-dye reaction, extensive plant dermatitis — often needs a prescription course early, and the sooner it starts the less miserable the fortnight. This is a prompt appointment, not a patient product audit.
- Weeping, honey-coloured crusting, spreading heat, or fever See a dermatologist soon
Broken, scratched dermatitis is an open door for bacterial infection, and infected dermatitis does not improve on emollients and steroid creams alone. Signs of infection change the treatment and warrant being seen quickly.
- Hand dermatitis that is cracking, bleeding, or threatening your ability to work See a dermatologist soon
Fissured working hands heal slowly at the best of times and not at all while the exposure continues. Occupational dermatitis has real treatment options and real documentation implications, and it earns a referral rather than another winter of hand cream.
- A rash that keeps returning in the same place with no identifiable cause Worth a clinician visit
Not urgent — but a recurring site-specific rash is the exact presentation formal patch testing exists for, and every cycle of flare and guesswork is time the answer could already have been on a results sheet.
Which part of this pathway is yours?
Four branches are mapped here, and they run at different speeds — one is a slow experiment, one is a prompt appointment. Six questions, about a minute, including the ones that decide whether this is contact dermatitis at all.
Answers stay in this browser. Nothing is sent anywhere, and one button clears them.
One thing to be clear about. This places you on a map rather than diagnosing you — and this condition's map borders eczema, seborrhoeic dermatitis, rosacea and fungal infection, all of which can impersonate it. If the descriptions here keep not-quite-fitting, that mismatch is itself useful information for an appointment.
What this looks like
Clinicians sort contact dermatitis by mechanism and by pattern — what kind of reaction, and where it sits. The site of the rash is unusually informative here: contact dermatitis happens where the contact happens, and the map of your rash is often the first draft of the culprit list.
Irritant contact dermatitis
The commoner kind by far — barrier damage from substances or habits that would eventually irritate anyone, with no allergy involved.
What it looks like: Dry, tight, stinging, sometimes chapped or glazed skin in the zone of exposure: hands that live in water and detergent, a face worked over by acids and retinoids, lips licked raw. It tends to burn and sting more than it itches, appears within hours rather than days, and improves — slowly — once the assault stops.
Allergic contact dermatitis
A true delayed allergy to a specific substance the immune system has already met and memorised.
What it looks like: An itchy, red, sometimes blistering rash arriving one to three days after exposure — which is exactly what makes the culprit hard to spot. The pattern gives it away as often as the timing: eyelids and neck from a fragrance or nail varnish, earlobes and jean-button territory from nickel, a hairline and ears from hair dye, a wrist under a watch strap. On deeper skin tones the redness may read as violet, grey or dark brown, and the itch outranks the colour as the clue.
Acute, blistering reactions
The dramatic end of the allergic spectrum — poison ivy and its relatives, hair dye reactions, a strongly sensitising substance meeting committed skin.
What it looks like: Streaks or patches of intensely itchy blisters, swelling that can close an eyelid, weeping and crusting at its worst. Frightening, usually not dangerous, and the presentation where short prescription courses earn their keep — this is not the branch for patiently working through a routine audit.
Chronic hand dermatitis
The occupational workhorse of this condition — hands exposed to wet work, gloves, foods, cleaning products or tools for months to years.
What it looks like: Dryness, cracking, scaling and soreness of the hands that never quite clears, often worst over knuckles and fingertips, sometimes with painful fissures that make work itself the obstacle to healing. Usually irritant, sometimes allergic, frequently both — and the presentation where treatment and livelihood get tangled together.
Three things that change the plan regardless of severity
An eczema background
Atopic skin starts with a leakier barrier, which both irritates more easily and lets potential allergens through in larger amounts. Contact dermatitis on top of eczema is common, and the two maintain each other — which is why a long-stable eczema that changes character or location is a standard reason for patch testing, and why this page and the eczema pathway cross-reference rather than compete.
What your hands do all day
Hairdressing, healthcare, cleaning, catering, construction and mechanical work are the classic high-exposure trades — wet work, gloves, dyes, cements and solvents. Occupational contact dermatitis changes the stakes: avoidance may mean changing how you work, protective routines have to survive a real shift rather than a bathroom shelf, and documenting the connection can matter for your employment. It is a legitimate reason to push for referral rather than cycling through hand creams.
Eyelids, lips, face and folds
Thin-skinned sites react to smaller exposures and tolerate less treatment. Eyelids are the classic tell for airborne and transferred allergens — nail products and fragrance reach them by hand — and they are also where potent steroid creams do the most harm. A rash on thin skin narrows both the suspect list and the treatment options, and lowers the threshold for getting help.
A many-product routine
Every additional product multiplies both the suspect list and the chance of a reaction — modern routines can put forty or fifty distinct ingredients on a face before lunch. This does not mean skincare is dangerous; it means that when a reaction happens, the audit is bigger, and the strip-back step below does more work the longer your shelf is.
What else it could be
- Atopic eczema — The great overlap rather than a pure mimic. History is the separator: lifelong, crease-seeking, flaring with seasons and stress points to eczema; new, site-mapped, product-linked points here. When the two blur, patch testing is how clinicians un-blur them.
- Seborrhoeic dermatitis — Flaky redness in the eyebrows, nasolabial folds and scalp that people routinely blame on a product. Its distribution follows oil-rich zones rather than contact zones, and it waxes and wanes independently of what you apply.
- Rosacea and steroid-induced facial rashes — Persistent facial redness with flushing is a different condition — and a face treated with borrowed steroid cream for weeks can develop a rash of its own that is neither the original problem nor an allergy to the latest suspect.
- Fungal infection — A slowly expanding itchy patch with a scaly leading edge, often asymmetric. Worth distinguishing before any steroid goes near it, because steroids feed it.
- Contact urticaria — Hives within minutes of contact — latex is the famous one — is a different, faster immune mechanism with different risks, including, rarely, systemic reactions. Minutes-fast belongs with a clinician, not with this page's day-or-two timelines.
One practical distinction does more work than any other on this page: reactions that arrive within minutes to hours and sting point toward irritation; reactions that arrive a day or two later and itch point toward allergy. Neither timeline is proof — but writing down when the rash follows exposure is the single most useful piece of detective work you can do before anyone examines you.
Why it happens
Contact dermatitis is your skin objecting to something it touched, and the objection comes in two mechanically different forms. Irritant contact dermatitis is chemical assault: soaps, solvents, repeated water exposure or an over-ambitious routine physically damaging the barrier faster than it can rebuild, no immune memory involved — anyone's skin would give in eventually, yours just did. Allergic contact dermatitis is more personal: your immune system has met a specific molecule before — a fragrance component, a preservative, nickel, a hair-dye ingredient — quietly filed it as an enemy, and now mounts a delayed attack a day or two after every re-exposure. The distinction matters because the fixes differ: irritant dermatitis improves when the barrier is protected and the assault stops; allergic dermatitis improves only when the specific molecule is named and removed, and it does not care how gentle, natural or expensive the product carrying that molecule is.
Anyone whose skin stings, burns, itches or breaks out in patches that seem connected to products, gloves, jewellery, or work; anyone whose 'sensitive skin' is really a rash that keeps returning in the same places; and anyone stuck in the loop of switching to yet another gentle product while the reaction keeps finding them. It is also for the person who has been told they have eczema but suspects — because of where it sits or when it flares — that something they touch is driving it.
Orientation, not diagnosis. This page is a map, not a diagnosis — and this condition overlaps honestly with one we cover separately. Atopic eczema and contact dermatitis look alike, coexist often, and feed each other: a damaged eczema barrier lets allergens in, and a contact allergy can keep eczema flaring. If your rash has been with you since childhood, lives in the elbow and knee creases, and flares with stress and seasons, start with the eczema pathway; if it maps to places and products, stay here. Plenty of people need both pages.
Everything here is available without a prescription The over-the-counter pathway
The honest over-the-counter offer here is unusual: for irritant contact dermatitis it is close to the whole treatment, and for allergic contact dermatitis it is close to none of it. Barrier repair, bland emollients and ruthless simplification genuinely fix skin that was being worn down by its routine or its workday — no prescription outperforms removing the assault. But no product, at any price, treats an allergy to a molecule that keeps arriving on the skin. The aisle's role in that scenario is subtraction: fewer ingredients, fewer suspects, a barrier in good enough repair to judge reactions against. What the aisle cannot sell you is the name of your allergen — and once a name is what you need, the escalation is to a test, not a cream.
Appropriate for: Mild, recent-onset reactions without blistering or infection; stinging, tight, over-processed faces; early hand dermatitis where the exposure can actually be reduced. In short: situations where stopping the assault and repairing the barrier can plausibly be the whole answer.
This pathway is unusual: its most powerful step removes products rather than adding them. The sequence below is an experiment as much as a treatment — calm the skin, hold everything still, then let reintroductions testify one at a time. Done properly it either fixes the problem or arrives at a clinician with the case already half-solved.
The rule the whole pathway runs on
You cannot out-soothe an exposure that keeps happening. Every cream, compress and repair product below works only in the space avoidance clears for it — and a routine that keeps changing cannot be interpreted, because this condition answers one to three days late. Fewer products, held steady, judged patiently: that is the entire method, and it beats any single purchase on this page.
Four rules before you start
- Reactions arrive late here — judge products against the last three days, not the last hour.
- Fragrance-free means the ingredient list says so; 'unscented', 'natural' and 'hypoallergenic' are decoration.
- One change at a time, always. Two changes in a week is zero information.
- Anything that blisters, swells, weeps or spreads fast leaves this pathway and goes to a clinician.
Answer as you go and the chart tracks where you are. Nothing is sent anywhere.
- TodayYou are here
Strip the routine to three things
Remove the cause from the lineup, even before knowing which suspect it was.
What this step involves
Morning
- A bland, fragrance-free cleanser — once Lukewarm water, fingertips, no brushes or cloths. If skin is very angry, water alone in the morning is legitimate. Browse all cleansers →
- A minimal barrier moisturiser Short ingredient list, no fragrance, no botanicals. This exact product stays for the whole trial — it is the control condition. Browse all moisturizers →
- A mineral sunscreen Zinc- or titanium-based, fragrance-free. Chemical filters are occasional sensitisers, so the mineral aisle is the low-suspicion choice for the duration. Browse all sunscreens →
Evening
- Cleanser, moisturiser, stop Everything else — actives, serums, masks, tools, wipes — goes in a box, not in the bin. If this is an allergy, that box is your evidence collection.
Why this step: Avoidance is the first-line treatment in every guideline for this condition, and when the culprit is unknown, avoidance means subtraction at scale. Simplification is also what makes the later steps readable: against a three-product baseline, a reaction has three suspects instead of thirty.
What's normal: Expect a strange week. Skin that is used to actives can feel dull or dry as it recalibrates — that is not the rash worsening, and it passes.
Ready for the next step?
Is the routine actually down to three bland products — nothing else touching the face at all?
Yes, three and holding: The experiment has begun and the clock runs from now, not from when the rash started. Go to step 1 ↓
Almost — one or two extras survived: The extras are exactly where culprits hide. All the way down to three, or the weeks ahead prove nothing.
- Weeks 1–3You are here
Repair and relieve while it settles
Give the barrier the materials and the quiet it needs to close the gap.
What this step involves
Morning
- Moisturise more often than feels normal After washing, after weather, whenever skin feels tight. Frequency is the active ingredient in barrier repair. Browse all moisturizers →
Evening
- Oatmeal or compresses for the itchy hours Colloidal oatmeal preparations and cool compresses calm itch without adding suspects. Scratching is the one exposure you fully control. Browse all colloidal oatmeal products →
- Ointment on the worst patches Petrolatum on cracked or chapped zones overnight — hands under cotton gloves if they are the battlefield. Browse all moisturizers →
Why this step: Irritant contact dermatitis is a barrier arithmetic problem, and this step fixes the supply side while step zero fixed the demand side. Most irritant reactions resolve on these two steps alone — which is the honest reason this pathway exists.
Hydrocortisone 1%, where sold over the counter, is a legitimate short-term bridge on small body or hand areas. Faces and eyelids are not the place to freelance with it.
Ready for the next step?
After two to three weeks: is the skin calm — no new stinging, rash settling, cracks closing?
Yes, settling well: Hold everything exactly as is until fully calm, then the reintroduction step is unlocked. Go to step 2 ↓
No — still flaring on three bland products: A rash that persists against a genuine strip-back has outgrown this pathway; the checkpoint below is now the plan.
- Only after fully calm — usually week 3–6You are here
Reintroduce one product a week, on trial
Let each shelved product testify separately.
What this step involves
Morning
- Unchanged base routine The three-product baseline continues throughout — reintroductions happen on top of it, never instead of it.
Evening
- One returning product, same site, several days Apply the candidate to the same small area — inner forearm or the side of the neck — daily for four to seven days before it earns back its place. A true allergen usually declares itself at that site within the week.
- Log what happens over the following three days The delayed reaction is the entire reason this is written down rather than remembered. Date, product, site, outcome.
Why this step: This is a home-scale version of the repeated open application test clinicians use — structured re-exposure at one site, read over days. It is the only self-directed method that respects this condition's delayed timing, and its results, positive or negative, are exactly what a patch-testing clinic wants to see.
Ready for the next step?
Did a reintroduced product reliably reproduce the reaction?
Yes — caught one: Retire it permanently and note its full ingredient list; the overlap with any future suspect is where the actual allergen's name hides. Continue reintroducing the rest — multiple positives share ingredients more often than you'd think. Go to step 3 ↓
No — everything came back clean: Either the culprit was a habit rather than a product — heat, scrubbing, overwashing — and is already fixed, or an exposure outside the routine is at work. If the rash stays gone, done; if it returns anyway, the checkpoint below has the next move.
- OngoingYou are here
Protect the win
Keep the fix from eroding back into the old shelf.
What this step involves
Morning
- Rebuild slowly, fragrance-free first New additions arrive one at a time with a few quiet days between, ingredient list read before purchase. The catalog's sensitivity-graded shelves exist for exactly this rebuild. Browse all cleansers →
Evening
- Keep the diary alive for a while A rash that returns now, against a known-good routine, is high-quality evidence — the diary turns it into a documented pattern rather than a frustrating mystery.
Why this step: Sensitisation grows with exposure, so the habits that fixed this are also what prevent the sequel — a shorter shelf, read labels, and one-at-a-time debuts are permanent upgrades rather than convalescence.
Ready for the next step?
Is the routine rebuilt, calm, and boring in the best way?
Yes: Then this pathway did its job, and the eczema-adjacent rest of the site is yours again — carefully. Go to the checkpoint ↓
It keeps relapsing despite all of it: That is a patch-testing case. Take the diary and the box of suspects to the appointment — they are worth more than either alone.
Four to six weeks from the strip-back
Counted from the day the routine genuinely reached three products — not from the day the rash appeared.
How to judge it: Against the diary and the photos: is the skin calm on the bland baseline, and what did reintroductions actually show? Memory alone will blur the three-day delays this condition trades in.
Where did the experiment land?
The best available result: this pathway just did what patch testing does, at product resolution.
Retire the culprit for good and keep its ingredient list — if a reaction ever recurs from a different product, the shared ingredients between the two lists are the shortlist for the real allergen's name. Formal patch testing remains worthwhile if you want the specific molecule named, particularly before big purchases or if the culprit was something hard to avoid.
Also a win, with an irritant-shaped explanation.
The likeliest story is accumulation: no single villain, just a routine whose total load — actives, washing, friction, weather — outran the barrier. The fix is the habit set you just built rather than a blacklist. Rebuild deliberately, keep the load lighter than before, and treat any future recurrence as fresh evidence.
This is the handover point.
Skin still flaring after weeks on three bland products means the driver is outside the routine's reach: an unidentified allergen arriving by air, hands or textiles; an exposure at work; or a condition this pathway does not treat — eczema, seborrhoeic dermatitis, rosacea among the candidates. That is a clinician's question now, and the diary plus the strip-back story is precisely the evidence that makes the appointment productive.
The pattern that names itself: something constant is reaching the skin.
When every product tests clean but the rash keeps returning, the exposure is usually outside the lineup — a leave-on suspect nobody suspects (nail products and fragrance travel by hand to eyelids and neck), a workplace or hobby material, a partner's products, or a textile finish. This is the classic patch-testing referral, and it is worth pursuing rather than accepting a cycle of flare and cream.
Leave this pathway now if any of these appear
Facial or eyelid swelling, blistering that spreads, weeping or honey-crusting, fever, or any reaction arriving within minutes of contact — these are not strip-back-and-wait situations. Same-day or prompt care applies, and the product suspected goes with you, unwashed container and all.
A solved case stays solved only as long as the avoidance does. The allergy is permanent, product formulations change without announcements, and a reliable old product can quietly reformulate an allergen back into your life — a re-check of labels on repurchase is the maintenance dose here.
Where the over-the-counter pathway ends
Everything above is available without seeing anyone, and for the irritant half of this condition it is genuinely most of the medicine. The line sits where a name is needed: prescription-strength inflammation control for skin that will not settle, and — the real destination — patch testing, which no amount of shopping replicates. The strip-back work is not wasted at that point; it is the case file the clinic starts from.
See the prescription pathway →Contact dermatitis: the full therapy pathway · dermapproved.com/treatments/contact-dermatitis/ · not a diagnosis — confirm anything you act on with a clinician
What to expect
This condition offers something rare on this site: a genuine possible ending. Name the trigger, remove it, and allergic contact dermatitis does not need managing — it needs remembering, because the allergy itself is lifelong even though the rash is gone. The honest counterweights: the search can take months, patch testing has waiting lists, some allergens are genuinely hard to avoid completely, and the irritant version ends not with a name but with permanently better habits — which is less satisfying and equally effective. Expect the timeline to be measured in weeks for calming the skin and months for the full detective arc, and expect at least one false accusation along the way; everyone blames the newest product first, and the real culprit is regularly something trusted for years, because sensitisation needs repeated exposure to develop.
- The three-day delay is the trap: what your skin does today is about what touched it earlier this week, not this morning
- Simplification only works as an experiment if the baseline holds still — no new products mid-trial, however promising
- Steroid courses run to their end date and then stop; the fortnight after they end is the most informative window on this page
- 'Hypoallergenic', 'natural' and 'clean' are not safety data — the ingredient list is the only text on the packaging that counts here
- A named allergen is a lifelong instruction, not a phase — the allergy does not fade because the rash did
Where the site stays useful after the clinical part: the catalog's fragrance-free and sensitivity-graded shelves are the practical answer to 'what can I actually buy now', the ingredient decoder polices a named allergen across its aliases, and the flare diary stands ready for any future rash that starts the story again. Avoidance is a shopping skill, and shopping is a thing this site is genuinely equipped to help with.
What would bring you back sooner
Whatever step you are on, these do not wait for the end of a trial period. They are the same
presentations listed at the top of this page — repeated here because that is where they
matter, rather than where they were easiest to put.
- Swelling of the face or eyelids, or any tightness of the mouth or throat Seek care quickly
- A blistering rash that is spreading rapidly or covers a large area See a dermatologist soon
- Weeping, honey-coloured crusting, spreading heat, or fever See a dermatologist soon
- Hand dermatitis that is cracking, bleeding, or threatening your ability to work See a dermatologist soon
- A rash that keeps returning in the same place with no identifiable cause Worth a clinician visit
Prescription only — from here on, this is a clinician's decision The prescription pathway
Why this tier exists. What the aisle cannot do: treat an allergy while the allergen keeps arriving, tell you which of forty ingredients is the culprit, or out-moisturise an exposure that continues every workday. And one warning it owes you: 'hypoallergenic', 'dermatologist-tested', 'clean' and 'natural' are marketing registers, not safety data — some of the most common contact allergens in current patch-test series are fragrance components and botanicals that appear proudly in natural products.
Contact dermatitis has an unusual map: the destination is not a stronger treatment but a name — the thing your skin is reacting to. Three routes run toward it depending on where the rash sits and how it behaves, and one of them ends at a diagnostic test rather than a drug.
The same pathway in full below — each step names what it involves, why it sits where it does, and what tells you it's time to move up. Tap any therapy to jump to its detail.
The face that turned on its routine
Stinging, burning, tightness or an itchy patchy rash on the face or neck, connected — clearly or vaguely — to skincare, cosmetics or hair products. The commonest way this condition walks into the room, and the branch where the aisle both caused the problem and holds most of the fix.
You reach this column when: The rash never settles despite genuine simplification, keeps returning without an identifiable product, or a specific reintroduction reliably reproduces it and you need the actual ingredient named.
- Prescription topical
Prescription calm for skin that won't settle
Why this step sits here: Facial dermatitis that survives a real strip-back needs prescription-grade inflammation control, and the face is where potency choices are least forgiving — which is why this rung is a prescriber's judgement rather than a borrowed tube. Worth knowing before the chips below: topical steroids carry less trial evidence in contact dermatitis specifically than their standing suggests, because they became standard care long before anyone thought to randomise them against a vehicle. That is a gap in the literature rather than a doubt about whether they work.
Two ways to switch the inflammation off, and what decides between them is where the rash sits and how many weeks it is likely to need — not which one is stronger.
- A potency-matched topical corticosteroid backed by smaller studies
Reached for when facial or neck skin needs to be quiet within days and the course can have a real end date. Mild potency on the face, a fixed number of weeks, and a plan for what happens when it stops — that plan is most of the prescription's value.
- A topical calcineurin inhibitor — tacrolimus or pimecrolimus backed by smaller studies
Suits eyelids, lips and folds, and any rash that will plainly need weeks rather than days, because nothing in this class thins skin. The trade is a burning first few applications that has to be sat through, which is when most people abandon it.
When to move up
- A fair trial
- A course as prescribed — typically one to three weeks — alongside continued simplification, then reassessment.
- Improvement looks like
- Clearing that holds after the course ends. Clearing that collapses the moment treatment stops is a different and important result.
- Move up if
- It returns whenever treatment stops, or the culprit still has no name after the routine audit.
→ The next step up this pathway.
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- In-office procedure
Patch testing — get the allergen named
Why this step sits here: A facial rash that keeps returning past a proper strip-back and a proper prescription course has earned the formal test. Fragrance chemistries, preservatives and nail-product resins — carried to eyelids and neck by your own hands — are classic culprits that no amount of product-switching will find, because they appear across dozens of products under dozens of names. What is worth understanding before the appointment is that patch testing is not one fixed test: the baseline series covers the several dozen substances the regional registries say account for most contact allergy, and it can be widened. A cosmetic or hairdressing series is added when the story points somewhere the baseline does not reach, your own products can be tested alongside it, and a rash confined to sun-exposed skin calls for photopatch testing instead, where a duplicate set of allergens is exposed to ultraviolet light and the two sides are compared. Asking which of those is planned is a better question than asking whether testing is available.
The result changes shopping permanently, in a good way: a named allergen plus the ingredient databases the clinic points you to turns the rest of the cosmetics aisle back into usable territory. It is worth knowing that the benefit is not automatic — in the follow-up work, the people whose dermatitis actually improved six months later were the ones who could still name their allergens and had genuinely changed what they bought. The sheet is the beginning of the treatment, not the end of the appointment.
What a rebuilt shelf looks like
Clear skin on three products is not the finish line; the finish is a routine that has grown back without quietly smuggling the problem in with it. The shape that holds is a small core that never changes, everything else introduced one at a time with several quiet days in between, and the habit of reading an ingredient list before the front of the box. Sensitisation is built by repetition, which means the products most likely to cause the next episode are the ones that become daily — a good argument for keeping the daily list short and letting the occasional list be as adventurous as it likes. Where an allergen was actually named, this is where the naming pays off: the name works as a filter rather than a prohibition, and most of the aisle comes back.
Hands that work for a living
Dry, cracking, sore hands in anyone whose day involves water, gloves, food, patients, cleaning products or tools. Usually irritant, sometimes allergic, often both — and the branch where treatment has to survive contact with a real job.
You reach this column when: Painful fissures persist, the rash worsens despite real protection, or gloves themselves seem to inflame it — a detail worth reporting rather than puzzling over.
- Prescription topical
Potent topicals for thick-skinned territory
Why this step sits here: Palm skin is the thickest on the body and shrugs off the potency that would scar a face — under-treatment is the classic failure here. A properly potent steroid course, alongside the unchanged protection routine, is what breaks the flare cycle on hands that emollients alone cannot hold.
Palm skin is thick enough to need real potency, and hands are used too constantly for an open-ended steroid run to be wise. This tier is choosing between those two facts rather than ranking two drugs.
- A potent topical corticosteroid, in defined courses backed by smaller studies
The usual opening on palms and finger backs, where the common error is under-treatment rather than over-treatment: a potency that would be reckless on a face is often exactly what thick skin needs, given for a set number of weeks with the protection routine continuing underneath.
- A topical calcineurin inhibitor backed by large randomized trials
Fits hands whose courses keep repeating, where the accumulating steroid load has itself become the problem. In a 652-patient trial in chronic hand dermatitis, pimecrolimus separated from its vehicle on both treatment success and itch, and in patch-test-positive hand eczema tacrolimus finished level with a mid-potent steroid over three months.
When to move up
- A fair trial
- A prescribed course, usually two to four weeks of adequate potency, with the protection routine continuing underneath.
- Improvement looks like
- Cracks closed and inflammation down by the end of the course — and staying down as it tapers.
- Move up if
- It relapses the moment courses end, keeps needing repeat prescriptions, or work exposure makes control impossible.
→ The next step up this pathway.
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- Prescription oral
Dermatology: testing, and the chronic-hand toolkit
Why this step sits here: Chronic hand dermatitis that defeats potent topicals gets two different things from dermatology, and the order matters. First the diagnostic: patch testing, because rubber accelerators, preservatives and worksite chemicals hide inside stories that look purely irritant, and a name reshapes the plan more than any drug below it can. The practice guidance is explicit that anyone who might have both mechanisms running should be tested rather than sorted by history — and hands are where both mechanisms run at once most often. Only then the treatments, which are a genuine menu rather than a staircase: what gets chosen depends on how the hands behave, what else the person has, and what is funded where they live.
Four routes past potent topicals, all of them prescriber-chosen and none of them a rank above the others. The differences that decide are the pattern of the hands, what else is going on, and access.
- Delgocitinib cream backed by large randomized trials
Reached for where hands need long, repeatable control without the thinning that recurring steroid courses bring. It is the first treatment licensed specifically for moderate-to-severe chronic hand eczema, on the back of two phase 3 trials against vehicle, and where it is funded it changes what this tier can offer.
- Oral alitretinoin backed by large randomized trials
Suits the thickened, fissured, hyperkeratotic hand that has already failed potent topicals, where a defined oral course is acceptable and can be monitored. Licensed for exactly this indication in the UK and several other countries, and entirely off the table without rigorous contraception.
- Hand phototherapy — narrowband UVB or local PUVA backed by smaller studies
Fits hands that improve while treatment runs and a life that can absorb repeated hospital visits. The two modalities finished close to each other head to head on palmar disease, so availability, travel and the phototoxicity risk of psoralen usually settle which one is offered.
- Systemic immunosuppression, or a biologic where atopic disease overlaps backed by smaller studies
Considered where everything above has failed or does not suit — ciclosporin and methotrexate have the longer histories, and dupilumab is used in hands whose eczema is atopic as well as contact. All of it carries monitoring, and none of it starts without a clear account of why the simpler options were not enough.
If your hands are your livelihood, say that sentence at the appointment. It legitimately changes urgency, treatment choices, and the documentation you may later need — occupational dermatitis is a recognised category, not a complaint about your job.
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Keeping working hands intact between flares
Chronic hand dermatitis is a relapsing condition, and the version of success worth aiming at is long quiet stretches rather than a cure — which is a smaller promise than this page makes elsewhere and a more honest one. The prognosis data are blunt about why maintenance matters: a year after occupational hand eczema was formally recognised, a quarter of it was still severe or worse, and the people who did poorly were mostly the ones whose exposure never changed. What holds a remission is unglamorous and physical. Emollient stationed where the washing happens rather than in a drawer. Cotton liners under waterproof gloves, gloves off the moment the task ends. Petrolatum under cotton overnight during rough stretches, applied before cracks open rather than after. And a prescribed topical stepped down to intermittent use on the sites that flare first, rather than stopped dead the day the hands look normal.
The sudden, blistering reaction
An intensely itchy, blistering, sometimes swelling rash arriving over hours to a couple of days — after a plant, a hair dye, a henna tattoo, or a new product used enthusiastically. Dramatic, usually self-limited, and the one branch where waiting out an aisle trial is the wrong instinct.
Face or eyelid swelling, blistering across a large area, or any mouth or throat involvement belongs with a clinician today — severe acute reactions are treated early and decisively, and the treatments that work are prescription ones.
You reach this column when: It is spreading, blistering widely, involving the face or genitals, weeping heavily, or simply more miserable than compresses can answer.
- Prescription topical
Prescription control for the fierce version
Why this step sits here: Severe acute contact dermatitis is one of dermatology's clean wins: potent topical steroids — or a short oral course when it is widespread or facial — cut the arc of a wretched three weeks down to a tolerable one. Hair-dye and plant reactions in particular are treated early and firmly rather than endured.
One decision in two versions, separated by how much skin is involved rather than by how wretched it feels.
- A potent topical corticosteroid, started early backed by smaller studies
Fits a reaction that has stayed in one region — a streak up a forearm, a band under a bracelet, a patch where a plant brushed past — where a strong cream applied in the first days shortens a miserable arc with no systemic exposure at all.
- A short oral corticosteroid course backed by smaller studies
Reached for when the reaction is widespread, involves the face or eyelids, or is severe enough to stop sleep. Given as one decisive tapering course rather than a supply to keep, because a course that keeps being repeated for the same rash is a sign the trigger was never identified.
One follow-up matters after the fire is out: a severe reaction usually means a real allergy, and real allergies repeat. A hair-dye reaction is a permanent instruction about hair dye — and a candidate for patch testing to confirm the specific molecule, because it has relatives in other products you will meet again.
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After the fire is out
The episode ends; the allergy does not. A reaction fierce enough to blister is usually a real, permanent sensitisation, and the useful work happens in the fortnight after the skin has settled — while the memory of what preceded it is still sharp. Two things are worth doing then. Write down the exposure in detail, including the brand and the batch if the container still exists, because the specific molecule matters more than the product. And ask whether patch testing is worth arranging once treatment has washed out, since a confirmed name comes with a list of relatives: someone reacting to a hair-dye ingredient needs to know it turns up in black henna tattoos and some textile dyes, and someone reacting to a plant needs to know which of its cousins share the same resin. Steroid courses suppress the test, so the timing is a scheduling question rather than a reason to skip it.
After the answer — living with a named trigger
The branch for people who have their patch-test results, or a culprit identified beyond reasonable doubt. This is the good outcome — and it comes with homework, because allergens hide across product categories under multiple names, and the allergy is lifelong.
Fragrance allergy confirmed
The widest-ranging verdict, because fragrance is in nearly everything and 'unscented' can legally contain masking fragrance. The working rule is 'fragrance-free' on the label plus an ingredient check for the specific components you tested positive to — and knowing that essential oils are fragrance in the eyes of your immune system, whatever the marketing says.
Preservative allergy confirmed (MI and relatives)
Check leave-on products first but do not ignore rinse-off — shampoos and washing-up liquids count for hands. Regulation has pushed methylisothiazolinone out of leave-on cosmetics in several jurisdictions, but it persists in household products and paints; the ingredient databases your clinic recommends are the reliable filter.
Nickel allergy confirmed
The most common patch-test positive in every registry series. Jewellery, buttons, buckles, keys, tools and phone edges are the classic sources; barrier tricks — a coat of clear varnish on a button, covers on frames — genuinely work, and spot-test kits for nickel exist for the committed.
Testing negative — it was irritant after all
A genuinely useful result, not a dead end: it retires the hunt for a hidden allergen and points everything at exposure arithmetic — washing habits, wet work, product load and barrier repair. The maintenance version of the first rung becomes the long-term plan, and it works.
Contact dermatitis: the full therapy pathway · dermapproved.com/treatments/contact-dermatitis/ · not a diagnosis — confirm anything you act on with a clinician
When the rules change
The ladders above are written for an adult with a rash and a shelf of products to interrogate. Several situations sit outside that description — a pregnancy that withdraws the diagnostic step, a workplace that cannot simply be avoided, a rash that appears only where the light falls. Each one adjusts the plan without changing where it is going.
Pregnant or breastfeeding
Nearly everything on this page is compatible with pregnancy, because nearly everything on this page is subtraction: fewer products, blander products, gloves, ointment, patience. What pregnancy withdraws is the top of the ladder and, by convention, the diagnostic step — the oral retinoid used for severe hand eczema is among the most strictly contraindicated drugs in dermatology, and patch testing is usually postponed rather than refused. Deferring the test delays the answer, not the comfort, and it is worth saying out loud so the wait reads as a considered decision instead of a brush-off. The condition itself does nothing to a pregnancy; only the menu narrows.
What can be used
- The entire over-the-counter pathway — simplification, emollients, colloidal oatmeal, cool compresses, petrolatum, gloves
- Prescription topical corticosteroids, with the potency, the site and the length of course decided by whoever is prescribing them
- The diary, the photographs and the reintroduction work, none of which loses anything by being done now and read later
- A referral conversation now even if testing waits: being placed on a list is not the same as being tested, and waiting lists are long enough that the two often coincide anyway
What comes off the table
- Oral alitretinoin, absolutely — it is clinician-managed with mandatory contraception, and the exclusion period extends before conception as well
- Assuming testing is impossible rather than asking; postponement is convention rather than demonstrated hazard, and the judgement belongs to the clinician who knows the case
- Borrowing someone else's stronger steroid because getting a prescription feels harder at the moment — potency and site are precisely what the prescription is for
Breastfeeding changes one practical thing: anything applied to the chest can reach a baby's mouth, so emollients and any prescribed topical belong on skin that will not be in contact during a feed, and are applied after rather than before.
When you already know which kind it is
This page is deliberately written to work before the irritant-versus-allergic question is settled, because for the first several weeks the answer changes nothing: stop the exposure, repair the barrier, hold still. After that it changes almost everything. Irritant contact dermatitis is cumulative chemical and physical damage with no immune memory behind it — a dose everyone would eventually reach — and it improves when the arithmetic improves: gloves, fewer and gentler washes, emollient applied more often than feels reasonable, and nothing named at all. Allergic contact dermatitis is a learned, delayed response to one specific molecule, and it is completely indifferent to how gentle, natural or expensive the product carrying that molecule happens to be; it improves only when the molecule stops arriving, which is why its route ends at a test rather than at a stronger cream. The two also coexist constantly, since a barrier already worn down by irritants admits allergens more readily — so 'which one is it' is frequently answered 'both, and the allergic half is the one still hidden'.
What can be used
- On the irritant side: the exposure arithmetic — fewer washes, cooler water, gloves for wet tasks, emollient stationed where the washing happens, and enough time for a barrier to rebuild
- On the allergic side: the allergen's aliases, an ingredient database, and the discipline to re-read a label at every repurchase rather than at every flare
- For either: the same bland baseline, which is active treatment for one mechanism and a clean background for reading the other
What comes off the table
- Reading a negative patch test as a wasted appointment — it retires an entire line of inquiry and moves the whole plan onto the irritant side, which is a result rather than a blank
- Expecting an allergic rash to respond to a gentler version of the same product; the immune system is reacting to a molecule, not to a formulation's manners
- Treating an irritant verdict as permanent — a barrier that stays broken is exactly the surface on which a new contact allergy gets built
- Irritant, with testing negative
- The plan becomes entirely behavioural and entirely durable: protection at the point of exposure, repair after it, and a lower total product load than before. There is nothing to blacklist, which people find deflating and which is actually the easier version of this condition to live with.
- Allergic, with a name
- The plan becomes a reading skill. One molecule, several aliases, and an unknown number of products carrying it — including household and work materials that no cosmetic regulation covers. The clinic's avoidance sheet and its ingredient database are the working tools, and the improvement follows how completely the avoidance is achieved rather than how motivated anyone is.
- Both at once
- Common, and especially so on hands. The practical consequence is that fixing one half produces partial improvement and then a plateau, which is easy to read as treatment failure. Partial response to thorough avoidance is a reason to look for the second mechanism, not a reason to escalate the drug.
Spread is the separator that rarely makes it into patient leaflets. Irritant dermatitis stays inside the zone that met the substance; allergic dermatitis has a habit of travelling — reaching eyelids from hands, or erupting days later as scattered patches somewhere the substance never went. A rash that has left the scene of the contact is a point in favour of allergy.
When the exposure is the job
Occupational contact dermatitis is the version of this condition where avoidance runs straight into a livelihood, and it deserves to be handled as an employment matter as much as a medical one. The prognosis is worth knowing plainly rather than discovering: a year after formal recognition, a quarter of cases were still severe or had worsened, and the strongest predictors of a bad course were an atopic background, greater age and an exposure that never actually changed. What that argues for is early and structural action — changing what reaches the skin, rather than out-treating what reaches it. That means substitution at source where it exists, protective equipment that fits the task, and reporting early enough that a record exists. Personal skincare helps at the margins and is worth doing; the honest trial evidence puts moisturisers ahead of pre-work barrier creams, and both well behind not touching the substance.
What can be used
- Gloves matched to the material, with cotton liners underneath — sweat trapped inside an occlusive glove is itself an exposure, and liners are the fix rather than fewer gloves
- Substitution where the trade allows it: some hairdressers sensitised to one dye component tolerate an alternative, and some cements and resins have less sensitising formulations
- Emollient stationed at every sink at work as well as at home, because location beats intention and the trial evidence is strongest for frequency
- Occupational health, a formal report, and a written record of dates and exposures — documentation opens options later that memory cannot
- The holiday test as evidence: hands that clear over a fortnight away and relapse within days of returning are a finding, and saying that sentence at an appointment moves it along faster than any description of the rash
What comes off the table
- Treating a pre-work barrier cream as the plan; pooled across the prevention trials its effect was small enough that the reviewers doubted it mattered clinically
- Waiting until the hands are fissured and bleeding before saying anything — early recognition is one of the few prognostic factors anyone can actually influence
- Assuming a training session fixes it permanently; the long follow-up on an intervention that worked at eighteen months found no visible advantage six years later
- Hairdressing and beauty
- The highest-risk apprenticeship there is: wet work all day, dyes, bleaches and permanent-wave chemicals, and gloves that are often worn for colouring and skipped for shampooing — which is the exposure that does most of the damage. Reactions to hair dye are reported by a substantial minority of the trade, and a meaningful share leave it altogether.
- Healthcare, cleaning and catering
- Wet work, frequent hand hygiene and glove occlusion in combination. One counterintuitive point is worth having: on intact skin, alcohol-based handrub is generally gentler than repeated soap-and-water washing, so it is not the villain it is assumed to be — but it stings ferociously on fissures, which is why cracked hands need the emollient and the protection sorted before hygiene routines are argued about.
- Construction, trades and mechanical work
- Chromate in wet cement, epoxy resins, solvents, cutting fluids and rubber chemicals in gloves and tools. The exposures are more corrosive and the protective equipment more likely to be the wrong equipment, and epoxy allergy in particular tracks closely with how consistently gloves and covered skin are actually used.
If hands are the livelihood, that sentence belongs at the start of the appointment rather than the end. It legitimately changes urgency, treatment choice and what gets documented — occupational dermatitis is a recognised category with its own referral routes, not a complaint about a job.
A rash that appears only where the light falls
Photoallergic contact dermatitis needs two things to happen — the substance on the skin and ultraviolet light on the substance — and its signature is a rash that respects the boundaries of exposure to sunlight: the face and the V of the neck but not the shade under a collar, the backs of the hands but not the strip beneath a watch. It behaves like ordinary contact allergy in every other respect, including the day-or-two delay. The large European photopatch study is what makes its causes concrete, and the results are not what most people expect: topical anti-inflammatory gels caused far more photoallergy than any sunscreen did, with ketoprofen the single biggest contributor. Among sunscreen filters, the older organic absorbers — octocrylene, benzophenone-3 and avobenzone — accounted for most of what was found, while the newer filters were rarely implicated. The diagnosis needs photopatch testing rather than ordinary patch testing: two identical sets of allergens go on the back, one side is exposed to ultraviolet A after two days, and the comparison between the sides is the whole answer.
What can be used
- Mineral filters — zinc oxide and titanium dioxide — which are not known to cause photoallergic or allergic contact dermatitis and are the standing substitution when a filter is implicated
- Clothing, hats and shade, which do the job no sunscreen can be relied on to do over large areas or long days
- Photopatch testing, asked for by name when the rash maps to sunlight, since a standard patch series alone can return negative and close the investigation prematurely
- Stopping any topical anti-inflammatory gel on sun-exposed skin while the question is open — it is the likeliest cause and the easiest to withdraw
What comes off the table
- Concluding that sunscreen is impossible and going without; the substitution is a different filter chemistry, not less protection
- Swapping between chemical-filter sunscreens at random — several of the common photoallergens are chemically related closely enough that people react to more than one of them together
- Reading a rash confined to sun-exposed skin as sunburn that keeps happening; sunburn does not itch for a week and does not arrive two days late
This is the clinical reason the supporting routine on this page reaches for a mineral sunscreen rather than any high-factor one. It is the low-suspicion choice while the question is open, and it stays the sensible choice once a filter has been named.
Children and teenagers
Contact allergy in children is real, reasonably common and systematically under-investigated, largely because a rash on a child gets called eczema and left there. The exposures are not a smaller version of an adult's; they are their own list. Craft materials have turned into a genuine source of preservative allergy — slime in particular, which children knead for hours with bare hands and which frequently contains isothiazolinones from the glue that makes it. Temporary black henna tattoos from holidays and fairs are the most consequential of the lot, because the ingredient that makes them black is a hair-dye chemical applied at concentrations no licensed dye is permitted, and a single one can produce a lifelong, strongly positive allergy with a long list of relatives. Then the ordinary things: shin pads and sports equipment, shoe rubber and adhesives, toilet seats, nickel in school jewellery and phone cases. Patch testing is done in children, with panels and quantities adjusted for size, and the threshold for arranging it should be lower than it usually is.
What can be used
- The same bland baseline the rest of the page describes, scaled down — a fragrance-free wash, an emollient applied generously, and rather fewer products than a teenager would prefer
- Patch testing with a paediatric-adapted series, which is appropriate at essentially any age once the history warrants it
- The exposure audit that adults get, extended to school, sport and hobbies — shin pads, gym equipment, art materials and craft kits belong on the list
- A conversation with whoever supervises the activity, because the fix for a school or club exposure is usually practical rather than medical
What comes off the table
- Black henna 'temporary tattoos' entirely, at any age — the risk is a permanent, strong sensitisation to a chemistry the child will meet again in hair dye and some textile dyes
- Long runs of potent topical steroid on a child's skin without a review date, since thin skin and a large surface-to-volume ratio both raise the stakes
- Assuming stable childhood eczema that changes site, changes character or stops responding is simply worse eczema; that pattern is a standard reason to test for contact allergy on top of it
Teenagers add their own exposures at speed — a first full skincare routine, hair colour, nail products, piercings and gym equipment often within the same year. When a teenage face reacts, the routine is worth auditing in full rather than blaming whichever product arrived last.
How an appointment actually happens, what to take to it, and how to keep your skin liveable while a prescription or procedure does its work.
What seeing a dermatologist actually looks like
A GP or family doctor can treat the inflammation, manage most irritant dermatitis, and refer onward — and for this condition the referral has a specific destination: patch testing, which lives in dermatology departments and contact-allergy clinics. Referral is standard when a rash is recurrent without an identified cause, when eyelids, face or genitals are involved, when hands and livelihood are at stake, or when anything suggests an occupational cause. If patch testing is what you need, ask for it by name — it is a specific service, and 'see how it goes with a stronger cream' is not a substitute for it.
What to bring
- A timeline: when the rash appears, where, and what happened in the one to three days before each flare — the delay is the signature of this condition
- Photographs of the rash at its worst, with the distribution visible, because it will be calm on appointment day
- Your actual products — or photographs of their ingredient lists — including the 'obviously innocent' ones: shampoo, nail products, hand cream, your partner's fragrance
- Work details: what your hands touch, what gloves you wear, whether colleagues have similar problems, whether weekends and holidays change anything
- Every cream already tried on it, including borrowed steroids — they change both the rash's appearance and the testing schedule
- Hobby exposures people forget: plants, adhesives, paints, resins, instruments, sports equipment
Questions worth asking
- Does this look irritant or allergic — and what in my story points which way?
- Would patch testing change what we do? If yes, what needs to happen before I can be tested?
- Which potency is this steroid, where exactly may I use it, and for how long?
- If it comes back when the course ends, what is the next step — and can we schedule that decision now?
- Is my job part of this, and should anything be documented about that?
- What specifically should I avoid while we wait for answers?
Cost and access. The topical tier is inexpensive nearly everywhere: emollients, generic steroid creams and short courses are among dermatology's cheapest tools. Patch testing is the bottleneck — a specialist, multi-visit service with real waiting lists in public systems and real invoices in private ones, which is exactly why the strip-back and diary work above matters: it either solves the problem without the test or arrives at the clinic with the case half-built. The newest chronic-hand treatments sit at the opposite end, with access governed by funding criteria that will vary by country for years.
Two patterns deserve a plain sentence at any appointment. A rash that clears on steroid cream and returns every time the course ends is not being treated — it is being interrupted, and it needs a cause found. And hands that are cracking through a working week are a medical problem with occupational standing, not a toughness test. Both sentences reliably move an appointment from another prescription toward an actual plan.
Skincare alongside therapy
Supporting care and treatment overlap heavily here, because bland barrier support is treatment for the irritant half of this condition. What changes across the ladder is mostly discipline: the more serious the work above, the more boring the routine underneath has to stay.
One rule governs everything: while this is active, every product is a suspect, so every product must justify its place. The supporting routine is deliberately minimal, deliberately fragrance-free, and deliberately stable — a moving routine cannot be interpreted.
During the strip-back and reintroduction weeks
The experiment only works if the baseline holds still. Three products, no debuts, and reintroductions on a schedule rather than a whim — the skin is the instrument, and instruments need calibration.
Do
- Hold the same bland cleanser, moisturiser and mineral sunscreen for the entire trial, even once skin feels better
- Reintroduce one product at a time, a week apart, applied to the same small area before it rejoins the routine
- Log each reintroduction and what followed over the next three days — the delay is where the answer hides
- Wash new clothes before wearing and rinse residue-heavy laundry — textile finishes and detergents are quiet suspects
Avoid
- Buying anything new mid-trial, including 'soothing' products aimed at exactly this situation
- Reintroducing two things in the same week because the skin looks fine — that is how a six-week experiment becomes a four-month one
- Essential-oil products as 'natural' substitutes; botanicals are some of the aisle's most active sensitisers
What that looks like on a shelf: a gentle cleanser, a barrier moisturizer, a mineral sunscreen.
While you're on a steroid or calcineurin-inhibitor course
The prescription is quieting the inflammation; the supporting routine's job is to add nothing to the fire and to keep the avoidance work running — because a rash that clears on steroid and returns after tells you the exposure never stopped.
Do
- Apply emollient generously around and between prescription doses, as advised
- Keep the routine at strip-back minimalism for the whole course — a clear week is not an invitation to celebrate with actives
- Note the calendar: what the rash does in the fortnight after the course ends is the most diagnostic window on this page
- Use the course as prescribed to the end, including the taper if given one
Avoid
- Spreading a facial steroid onto eyelids without explicit instruction — eyelids have their own rules
- Stockpiling and reusing leftover steroid on future rashes; the next rash may be the fungal mimic that steroids feed
- Judging the treatment during the calcineurin inhibitor's stingy first week
What that looks like on a shelf: a gentle cleanser, a barrier moisturizer, an emollient for everywhere.
Before and during patch-testing week
The test reads your immune system through your skin, so the skin has to arrive readable. Clinics send preparation instructions; the recurring themes are below, and their instructions override this page.
Do
- Confirm how long to hold steroid creams off the back and oral steroids off entirely — suppressed skin gives false negatives
- Keep the back dry all week: no showers over the patches, no swimming, no workouts that soak them
- Bring your actual products, ingredient lists intact, if the clinic asked for them — testing your own suspects is often the most valuable part
- Attend the second reading even if nothing seems to be happening; this allergy type answers late by design
Avoid
- Sun on the back in the weeks before — tanned skin under-reacts
- Scratching the patches, however itchy a positive gets
- Reading your own back and quitting early; half the information arrives at the delayed reading
What that looks like on a shelf: a gentle cleanser, an emollient for everywhere.
Living with working hands
Chronic hand dermatitis is managed in habits more than in tubes, and the habits have to be cheap enough — in time and attention — to survive an actual workday. This is the maintenance version, for the long haul.
Do
- Station emollient where the washing happens — by every sink at home and at work — because location beats intention
- Cotton liners under waterproof gloves for wet tasks, and gloves off the moment the task ends
- Petrolatum under cotton gloves at night during bad stretches, before cracks open rather than after
- Rings off for wet work; the skin underneath them is where hand dermatitis often starts
Avoid
- Alcohol gel on broken skin when soap and water is available and gentler
- Very hot water, which strips faster and feels better — a bad trade
- Ignoring a changed pattern: hands that suddenly flare with a new glove brand or product are reporting something specific
What that looks like on a shelf: an emollient for everywhere, an occlusive to seal at night, a gentle cleanser.
The supporting shelf
A gentle cleanser
A barrier moisturizer
A mineral sunscreen
An emollient for everywhere
An occlusive to seal at night
Products here are ranked gentleness-first — fragrance-free and minimal — because on this page every added ingredient is a suspect by definition. The shortest ingredient list that does the job wins, which is a genuinely different ranking than the rest of the site uses.
Every therapy named above, in full. Look things up here; it is not meant to be read end to end.
Every therapy, explained
Reference, not reading — every therapy named anywhere above, described the way a clinician would describe it. Nobody reads this section end to end; open the one you were sent here for. Which one is right for you is the appointment's job, not this page's.
Over the counter
Available without a prescription. Each one opens with what to look for on a label, which is the part that stays true regardless of which brand is on the shelf that month.
Over-the-counter Radical simplification
Stopping the exposure
Generally compatible
Radical simplification
Stopping the exposure
Not a product — the removal of most of them. The single most effective intervention available without a prescription, and the one nobody profits from recommending.
How it works
Contact dermatitis continues for exactly as long as the contact does. Cutting the routine to a bland cleanser, a bland moisturiser and (by day) a mineral sunscreen removes dozens of suspect ingredients at once — which both lets irritated skin recover and turns your face back into an instrument that can tell you things when products return one at a time.
What the evidence says well established
Avoidance of the responsible irritant or allergen is the foundation of contact dermatitis management in every clinical guideline; when the trigger cannot yet be named, systematic reduction of exposures is the standard first move.
Typical course
Two to six weeks of genuinely boring skincare. Long enough for the skin to settle and for reintroductions to mean something.
Commonly discussed side effects
- None — which is the point
- The psychological difficulty of shelving products you paid for is real and worth naming
Worth knowing
- Half-measures ruin the experiment: swapping one serum for a gentler serum is not simplification, it is substitution
- Keep the shelved products — if this is an allergy, they become your reintroduction test kit
Pregnancy: Using fewer products is compatible with everything.
Why it sits where it does: It sits first because it is the treatment the rest of the pathway is built around: every escalation above either continues the avoidance or exists to work out what, specifically, to avoid.
Over-the-counter Barrier repair moisturisers
Ceramide-dominant emollients
Generally compatible
Barrier repair moisturisers
Ceramide-dominant emollients
The active rebuilding half of the over-the-counter plan — bland, lipid-rich moisturisers applied far more often than feels normal.
Browse all ceramides products in our catalog →
How it works
Irritant dermatitis is a barrier losing material faster than it can synthesise it. Ceramide- and lipid-rich emollients resupply the mortar between skin cells directly, reduce water loss while repair happens, and measurably lower the skin's reactivity to the next exposure — which is why they are treatment here, not aftercare.
What the evidence says well established
Emollients and barrier repair are core management for irritant contact dermatitis and supportive care across the whole condition in clinical guidance; regular emollient use is also a mainstay of prevention in high-risk occupational groups.
Typical course
After every hand wash, after every shower, and at any moment skin feels tight — frequency beats quantity. Improvement builds over two to four weeks.
Commonly discussed side effects
- Rarely, a reaction to the moisturiser itself — even repair products contain preservatives, which is worth remembering if things worsen
Worth knowing
- Fragrance-free, always — including 'essential oil' fragrance, which counts
- A moisturiser applied once daily against wet work forty times daily is losing the arithmetic
Pregnancy: Bland emollients are compatible with pregnancy without caveats.
Why it sits where it does: It shares the first rung with simplification because they are two halves of one move: stop the damage, resupply the repair. Neither works well alone.
Over-the-counter Occlusives and physical protection
Petrolatum, barrier pastes and gloves
Generally compatible
Occlusives and physical protection
Petrolatum, barrier pastes and gloves
The defensive line: ointments and physical barriers that stand between recovering skin and the exposures that cannot be fully avoided.
- Petrolatum ointments — Overnight duty on cracked hands and lips — nearly allergen-free and unmatched at holding water in.
- Zinc oxide barrier pastes — Physical defence for skin folds and chapped zones that keep getting wet.
- Gloves, used correctly — Cotton liners under waterproof gloves for wet work; and knowing that rubber glove additives are themselves classic allergens.
Browse all petrolatum products in our catalog →
How it works
Occlusion slows water loss to a crawl, which is the condition damaged skin repairs fastest under; a greasy layer or a glove also physically intercepts the irritant before it reaches skin. Low-tech, cheap, and directly matched to how irritant damage happens.
What the evidence says strong
Occlusive emollients and appropriate protective gloves are standard components of hand dermatitis management and occupational skin protection programmes in clinical guidance.
Typical course
Ointment at night — under cotton gloves for hands at their worst — and barrier protection through every wet task, for as long as the exposure exists.
Commonly discussed side effects
- Greasiness, which is the price of the mechanism
- Occlusion can worsen folliculitis-prone areas — this is a tool for hands, lips and patches, not the whole face
Worth knowing
- Sweating inside waterproof gloves is itself an exposure — cotton liners are the fix, not fewer gloves
- Rubber accelerators in some gloves are classic contact allergens; if gloves seem to make things worse, that observation belongs at an appointment
Pregnancy: Petrolatum, zinc pastes and gloves carry no pregnancy caveats.
Why it sits where it does: It sits alongside barrier repair for the exposures that cannot simply be stopped — a job, a baby, a kitchen. Protection is avoidance wearing work clothes.
Over-the-counter Itch and inflammation relief
Colloidal oatmeal and short-term hydrocortisone
Generally compatible
Itch and inflammation relief
Colloidal oatmeal and short-term hydrocortisone
Symptom control while avoidance and repair do the real work — because itch that wrecks sleep gets scratched, and scratched dermatitis lasts longer.
- Colloidal oatmeal preparations — Monographed skin protectant; genuine itch relief with essentially no sensitising baggage.
- Hydrocortisone 1% (where sold over the counter) — The aisle's only true anti-inflammatory: appropriate briefly on small areas of body or hand skin, and not for faces, eyelids or long runs without advice.
- Cool compresses — Free, immediate, and better for weeping patches than anything greasy.
Browse all colloidal oatmeal products in our catalog →
How it works
Colloidal oatmeal calms itch signalling and supports the barrier; low-potency hydrocortisone damps the local inflammatory response directly; cool compresses close the loop on acute weeping patches. None of it removes the cause — all of it buys the skin quiet time to heal.
What the evidence says strong
Topical corticosteroids are the established anti-inflammatory treatment for contact dermatitis, with potency and duration matched to site; over-the-counter hydrocortisone occupies the lowest rung of that ladder. Colloidal oatmeal is a monographed skin protectant with supporting trial evidence for itch relief.
Typical course
Oatmeal and compresses as often as needed. Hydrocortisone briefly — days, not weeks — on limited areas, as a bridge while the avoidance work happens.
Commonly discussed side effects
- Hydrocortisone misused long-term on thin skin causes the problems that give steroids their reputation
- Oat-containing products are occasionally themselves a sensitiser in heavily inflamed skin
Worth knowing
- A steroid cream that keeps a rash tolerable while the exposure continues is a way of never finding the cause — relief is not the same as resolution
- Faces and eyelids are prescription territory; the potency that is safe there is a clinical judgement
Pregnancy: Colloidal oatmeal and compresses are unproblematic. Brief, limited hydrocortisone is generally regarded as low-risk in pregnancy, but confirming with a clinician costs nothing.
Why it sits where it does: It sits on the first rung as the comfort arm — necessary because untreated itch sabotages everything else, and deliberately limited because comfort that masks a continuing exposure delays the answer.
Browse the whole catalog for this condition:
What changed recently: The quiet aisle story of the last decade is subtraction: 'free-from' reformulation. The preservative methylisothiazolinone — driver of a genuine allergy epidemic through the 2010s — was banned from leave-on cosmetics in several jurisdictions and dropped by many brands, and patch-test data show that wave receding. The follow-up ten years on is more measured and worth having: marketed products now largely comply with the limits, and yet allergy to the isothiazolinones has not disappeared, which the researchers who checked read as the permitted level in rinse-off products still being set too high. Both halves of that support this page's central idea — for contact allergy, removing the molecule is the treatment, and how completely it is removed decides how much good it does.
Prescriptions and procedures
About the brand names below. Brand names are what the pharmacy label says; the generic name underneath is what matters, and for the steroid tier the potency class matters more than either. One caution specific to this condition: the aisle sells many products marketed at 'sensitive, reactive skin' whose ingredient lists include fragrance, essential oils and botanical extracts — several of which sit in the standard patch-test series. Here more than anywhere on this site, the ingredient list outranks the front of the packaging. Where a region is missing in a brands section, that reflects what we could verify rather than proof of absence.
The links on the prescription cards go to national medicines information and manufacturers' labels — the document itself rather than someone's summary of it. Two things a label will not tell you, and both matter more here than usual: which potency class suits the part of the body in question, and how many weeks the course should run. Those are settled at the appointment. A label written for one country may also describe a different licensed use from the one available where you are, which is particularly true of the newest chronic-hand treatments.
Prescription topical Prescription topical corticosteroids
Potency-matched anti-inflammatories
Individualized — ask a clinician
Prescription topical corticosteroids
Potency-matched anti-inflammatories
The standard prescription for dermatitis that is too inflamed for the aisle — used in short, decisive courses matched to the site.
What it's called at the pharmacy
Generic name Prescription topical corticosteroids
Sold as
- Dispensed generically almost everywhere — what matters is the potency class and the course length, not the name on the tube
Steroid creams run from mild to very potent, and the right class depends on where the rash is: what is appropriate for a palm would be reckless on an eyelid. That matching is the prescription's real content.
Read the label
- Hydrocortisone topical — patient drug information MedlinePlus (US National Library of Medicine)
- FDA labels for betamethasone valerate cream DailyMed (US National Library of Medicine)
- Hydrocortisone for skin — NHS medicines guide NHS (UK)
How it works
Corticosteroids shut down the local inflammatory cascade — the redness, swelling and itch — quickly and reliably. What they do not do is anything about the cause, which is why every steroid course on this page runs alongside avoidance rather than instead of it.
What the evidence says well established
Topical corticosteroids are the first-line pharmacological treatment for contact dermatitis in clinical guidelines, with potency selected to body site and duration kept short.
Typical course
One to three weeks, usually once daily, then stop or taper as instructed. Hands with thick skin need more potency than most people expect; faces need less than most people are given.
Commonly discussed side effects
- Skin thinning with prolonged use, especially on face, eyelids and folds
- Rebound flare if a strong course stops abruptly after long use
- Steroid-induced facial rashes when face-inappropriate potency runs for weeks
Monitoring
A course should have an end date and a review plan. Repeat prescriptions without a reassessment are how a two-week treatment quietly becomes a two-year habit.
Worth knowing
- If a steroid clears it but it returns every time the course ends, the exposure is ongoing — that pattern is a patch-testing referral, not a stronger steroid
- Never on a rash that might be fungal; steroids make that worse while hiding it
Pregnancy: Topical corticosteroids are used in pregnancy with appropriate potency and duration choices — a clinician conversation rather than a contraindication.
Why it sits where it does: It is the second rung because inflammation past a certain point does not settle on emollients alone — and it stays a rung rather than a destination because its job is to quiet the fire while the detective work finds the fuel.
Prescription topical Topical calcineurin inhibitors
Steroid-free anti-inflammatories
Individualized — ask a clinician
Topical calcineurin inhibitors
Steroid-free anti-inflammatories
The anti-inflammatories for the places steroids punish — eyelids, face, and anywhere a rash needs weeks of treatment on thin skin.
- Tacrolimus ointment — The stronger of the pair; the usual choice for eyelids and face.
- Pimecrolimus cream — Lighter texture, milder action, same steroid-free logic.
Read the label
- Tacrolimus topical — patient drug information MedlinePlus (US National Library of Medicine)
- Pimecrolimus topical — patient drug information MedlinePlus (US National Library of Medicine)
How it works
They calm the T-cell activity driving the inflammation without the skin-thinning machinery of corticosteroids, which is precisely what long treatment on delicate sites requires. The trade is a burning sensation for the first applications and a slower start.
What the evidence says strong
Topical calcineurin inhibitors are established steroid-sparing options for dermatitis on the face, eyelids and flexures, and appear in contact dermatitis guidance for exactly those sites.
Typical course
Twice daily until clear, then stop or step down; commonly used in bursts across months for recurrent thin-skin dermatitis.
Commonly discussed side effects
- Burning or stinging for the first days, which usually fades
- Transient flushing with alcohol for some people
Worth knowing
- Not for infected skin
- The first-week sting makes people quit exactly when it is about to start working — worth knowing in advance
Pregnancy: Used in pregnancy selectively; the decision sits with the prescriber.
Why it sits where it does: It shares the prescription rung as the answer to a specific problem the steroid card creates: eyelid and facial dermatitis that needs more than emollients but cannot safely take weeks of steroid.
Procedure Patch testing
The diagnostic that is also the treatment
Individualized — ask a clinician
Patch testing
The diagnostic that is also the treatment
The pivotal step of this whole pathway — a formal test that puts dozens of standardised allergens on your back for two days and reads what your immune system has memorised. It is the only way to get from 'something is doing this' to a name.
How it works
Small chambers containing standardised concentrations of the most common contact allergens — metals, fragrance components, preservatives, rubber chemicals, dyes — are taped to the back for around 48 hours, then read at removal and again a couple of days later, because this type of allergy answers slowly. A positive patch reproduces the rash in miniature at that allergen's spot. It is not a blood test and not a skin-prick test: those detect the fast kind of allergy, and this condition is the slow kind.
What the evidence says well established
Patch testing is the reference-standard investigation for suspected allergic contact dermatitis in every major guideline, and the large registry series built on it — tens of thousands of patients — are what tell us which allergens dominate: nickel, fragrance chemistries and preservatives lead current North American data.
Typical course
Three visits in one week: application, first reading around day two, second reading around day four or five. No showers on the back, no sport, no sun on the test site that week.
Commonly discussed side effects
- Itching under positive patches — a small version of the thing being diagnosed
- Occasionally a strong local reaction that persists for days
- Very rarely, a temporary flare of the original rash
Monitoring
The result is only half the product; the other half is the debrief — which of the positives is relevant to your actual exposures, and the ingredient-avoidance information that turns a chemical name into a shopping strategy.
Worth knowing
- Steroid creams on the back and oral steroids suppress results — testing is scheduled around treatment, which is a reason to be seen rather than to self-treat indefinitely
- A negative full series is genuinely useful too: it points the investigation back toward irritant causes and changes the plan
Pregnancy: Patch testing is usually deferred in pregnancy — not because of established harm, but because an elective diagnostic on a changed immune system is easy to postpone.
Why it sits where it does: It sits at the top of the allergic route not as the strongest treatment but as the exit from the loop: once the allergen has a name, avoidance becomes precise, and precise avoidance is the one intervention on this page that can genuinely end the condition.
Prescription oral Specialist and systemic options
Beyond the topical ladder
Avoid in pregnancy
Specialist and systemic options
Beyond the topical ladder
The dermatology tier for the two hard scenarios: an acute reaction too fierce for creams, and chronic hand dermatitis that has outlasted everything below.
- Short oral corticosteroid courses — For severe, acute, widespread reactions — decisive, brief, and not a maintenance plan.
- Delgocitinib cream (chronic hand eczema) — A topical JAK inhibitor approved in the EU in 2024 and by the FDA in July 2025 — the first approved treatment specifically for moderate-to-severe chronic hand eczema.
- Alitretinoin (in some countries) — An oral retinoid licensed for severe chronic hand eczema in the UK and elsewhere; strictly contraindicated in pregnancy.
- Phototherapy and conventional immunosuppressants — Dermatology-managed options for severe, refractory disease.
What it's called at the pharmacy
Generic names Short oral corticosteroid courses · Delgocitinib cream (chronic hand eczema) · Alitretinoin (in some countries) · Phototherapy and conventional immunosuppressants
Sold as
- Anzupgo (delgocitinib) — approved July 2025 for moderate-to-severe chronic hand eczema
- Delgocitinib approved in 2024; alitretinoin (Toctino) available for severe chronic hand eczema
This tier is genuinely regional: what a dermatologist can offer for chronic hand disease depends on where you live and, for the newest option, on funding. The generic names are the stable vocabulary.
Read the label
- FDA label for Anzupgo (delgocitinib) cream DailyMed (US National Library of Medicine)
How it works
Oral steroids interrupt a severe systemic-scale reaction quickly. Delgocitinib blocks JAK signalling locally in hand skin — inflammation control without steroid atrophy, built for long-term intermittent use. Alitretinoin works through retinoid pathways on the chronic, thickened, fissured hand eczema phenotype. Phototherapy and immunosuppressants damp immune activity where everything topical has failed.
What the evidence says strong
Short oral corticosteroid courses for severe acute contact dermatitis are standard guideline care. Delgocitinib carries phase 3 evidence in chronic hand eczema and regulatory approval in the EU (2024) and US (2025); alitretinoin has long-standing licensure for severe chronic hand eczema in several countries.
Typical course
Oral steroids: one to three weeks with a taper, once or rarely. The chronic-hand options: ongoing dermatology care with monitoring matched to the drug.
Commonly discussed side effects
- Oral steroids: sleep disturbance, mood effects, appetite — acceptable briefly, unacceptable repeatedly
- Alitretinoin: teratogenicity above all, plus lipid and mood monitoring
- Delgocitinib: local infections; a newer drug with a shorter real-world track record
Monitoring
All of this tier is prescribed with review built in. Repeated oral steroid rescues for the same rash are themselves a referral trigger — the pattern says the cause was never found.
Worth knowing
- An oral steroid course that keeps being needed is a diagnostic failure wearing a treatment costume
- Alitretinoin requires rigorous contraception; this is non-negotiable and clinician-managed
Pregnancy: Alitretinoin is absolutely contraindicated in pregnancy. Systemic steroids and the newer topicals are individualised decisions — pregnancy moves this whole tier into joint specialist care.
Why it sits where it does: It is the top rung because everything on it either carries systemic exposure or demands specialist monitoring — and because reaching it should trigger the question the pathway keeps asking: has the cause been named yet?
On the horizon
Pipeline information current as of 2026-08-11
Only treatments in phase 3 trials or later, or recently reaching the market, for contact dermatitis and chronic hand eczema specifically.
This changes nothing about what to do now. None of this changes what to do now — and for this condition that is doubly true, because the most powerful intervention on the page is identifying and avoiding a trigger, which no pipeline improves on.
Recently arrived
Delgocitinib cream (Anzupgo) (2025). A topical JAK inhibitor and the first treatment ever approved specifically for moderate-to-severe chronic hand eczema — EU approval in 2024, FDA approval in July 2025. Meaningful because the chronic-hand tier previously ran on steroids, off-licence use and one oral retinoid; access and funding will decide how quickly it reaches ordinary practice.
In late-stage development
Beyond the hand-eczema arrival above, the honest pipeline for contact dermatitis itself is thin — and structurally so: a condition cured by avoidance does not reward drug development the way chronic inflammatory diseases do. The activity worth watching is borrowed from atopic dermatitis, where JAK inhibitors and biologics are being explored in refractory dermatitis that overlaps with contact disease, and in regulation rather than pharma: allergen bans and concentration limits — the methylisothiazolinone story — have done more for this condition's numbers in a decade than any molecule. Re-reviewed on the site's regular schedule.
The things people try before they get here
This condition attracts a particular kind of remedy — the soothing, botanical, gentle-sounding one — and it is the single page on this site where that instinct can actively backfire, because several of the aisle's best-loved plant extracts sit in the standard patch-test series for good reason. Here is where each of the common ideas honestly stands.
- Oral antihistamines limited evidence
Taken by almost everyone with an itchy rash and doing very little for this one. Allergic contact dermatitis is a delayed, cell-driven reaction rather than a histamine-driven one, which is why the non-drowsy antihistamines usually change nothing at all. The sedating kind can still earn a place at night, because sleep that is not interrupted by scratching genuinely shortens things — but it is working as a sleep measure, and calling it a treatment for the rash sets up a disappointment.
- Pre-work barrier creams, the 'invisible glove' backed by smaller studies
Sold as protection you can apply, and the pooled trial evidence is politely underwhelming. Across the primary-prevention trials, creams applied before work shaved the rate of occupational irritant hand dermatitis by an amount the reviewers judged unlikely to matter in practice, while ordinary moisturisers used through the day did better. The honest reading is that a barrier cream is not a substitute for a glove, and the emollient after the shift is probably doing more than the cream before it.
- Tea tree oil and botanical soothers limited evidence
The category where reaching for something natural costs the most. Oxidised tea tree oil is itself a recognised contact allergen and appears in patch-test series for exactly that reason, as do several fragrance components that arrive inside botanical extracts without being labelled as fragrance. There is no trial support for any of them here, and the mechanism runs backwards: adding a complex plant material to inflamed skin adds suspects to an investigation whose entire method is removing them.
- A low-nickel diet, with or without oral disulfiram limited evidence
Studied in small numbers in people with confirmed nickel allergy and stubborn hand eczema, on the reasoning that swallowed nickel keeps an already-sensitised system provoked. The trials that exist are tiny and decades old, dietary nickel restriction is genuinely difficult to sustain, and disulfiram carries problems of its own. It is a specialist conversation for a tested minority, not something to attempt because a rash might turn out to involve nickel.
- Barrier coatings on metal, and home nickel spot tests limited evidence
Almost no formal evidence and a fair amount of practical sense. Putting a physical layer between skin and a stud, a buckle or a pair of frames removes the exposure, and removing the exposure is the one thing this condition reliably answers to. The catch is durability — clear varnish wears off and has to be redone — so it works item by item rather than as a strategy. Kits that detect nickel release from an object exist and are genuinely useful to anyone determined enough to carry one.
- Oral desensitisation to poison ivy limited evidence
A recurring idea with a long history: take the plant's resin by mouth and teach the immune system to stop caring. What review evidence exists is old, inconsistent and describes real adverse effects, and no current regimen is recommended by anyone. Avoidance, washing the resin off promptly after a known exposure, and treating the reaction properly when it happens remain the entirety of the answer.
Common questions
How is contact dermatitis different from eczema?
Eczema (atopic dermatitis) comes from within — a genetically leakier barrier and an immune tilt, usually declaring itself in childhood and favouring the elbow and knee creases. Contact dermatitis comes from without: something touching the skin, either wearing it down or triggering a specific learned allergy. The confusing part is the overlap — eczema-damaged skin develops contact allergies more easily, and a contact allergy can keep 'eczema' flaring for years. A rash that maps to places and products belongs on this page; a lifelong crease-dweller belongs on the eczema pathway; and stubborn cases sometimes need both, which is what patch testing untangles.
How do I figure out which product is causing it?
Not by switching products one at a time — the reaction arrives one to three days late, so rotation just scrambles the evidence. The method that works is the one this pathway is built on: strip to three bland basics, let the skin fully settle, then reintroduce one product per week while keeping notes. A product that reliably reproduces the rash on repeated tries has identified itself. And if nothing does, or the winner needs its guilty ingredient named, that is patch testing's job — an allergen like a fragrance component appears in dozens of products, so naming the molecule beats blacklisting the bottle.
Can I suddenly become allergic to a product I've used for years?
Yes — and it is the rule rather than the exception. Contact allergy requires sensitisation: repeated exposures during which the immune system gradually files a molecule as hostile, which can take months or decades. That is why the trusted old moisturiser is a legitimate suspect and the product you bought last week often is not — last week is rarely long enough to build an allergy, though it is plenty long enough to irritate. The newest thing on the shelf is the intuitive suspect; the faithful veteran is the statistical one.
Is patch testing the same as the allergy tests with needles or blood work?
No, and the difference decides which test you need. Skin-prick and blood IgE tests detect immediate-type allergy — pollen, foods, stings — the kind that reacts in minutes. Contact dermatitis runs on delayed-type allergy, a different immune mechanism entirely, and the only test that reads it is the patch test: allergens taped to the back for two days, read twice over a week. A negative prick test or blood panel says nothing about contact allergy, which catches people out — the right test for a slow rash is the slow test.
The cream cleared it, but it keeps coming back. Why?
Because the steroid treats the reaction, not the cause — it is a fire extinguisher, and something keeps relighting the fire. A rash that clears on treatment and returns within days or weeks of stopping is the classic signature of an ongoing exposure: a product still in rotation, an allergen hiding under a different name, gloves, a workplace, a partner's cosmetics. That relapse pattern is precisely the finding that should trigger the hunt for the cause — a diary, a strip-back, and usually patch testing — rather than a rolling supply of ever-stronger cream.
Are natural or clean products safer for this?
Frequently the opposite. Botanical extracts and essential oils are chemically complex plant materials, and several of them — along with the fragrance components they contain — sit permanently in the standard patch-test series because they sensitise people at scale. 'Natural' describes an ingredient's origin, not its behaviour on skin; poison ivy is impeccably natural. For this condition the protective label is not 'clean' but short: fragrance-free, minimal-ingredient formulas simply carry fewer suspects, whatever aisle they are shelved in.
If patch testing names my allergen, is that a cure?
Functionally, yes — with two honest footnotes. Complete avoidance of a confirmed allergen typically means the rash goes and stays gone, which makes this one of dermatology's few genuinely solvable conditions. Footnote one: avoidance is a skill with a learning curve, because allergens travel under aliases and turn up in unlabelled places — the clinic's ingredient databases and this site's decoder exist for exactly that. Footnote two: the allergy itself is permanent; the immune memory does not expire, so a slip years later will still answer. Named, avoided, remembered — in that order, and the condition is effectively over.
The other 141 questions
Everything that doesn’t fit on a therapy ladder — side effects, timelines, pregnancy, cost, the things people get told that aren’t true. Here are the ones asked most.
- Is this irritation or an actual allergy? Timing and sensation sort most cases: stinging within hours points to irritation, itching one to three days after contact points to allergy.
- Can I suddenly become allergic to something I've used for years? Yes, and it is the usual story. Contact allergy requires repeated exposure to develop, so the culprit is regularly something trusted for years rather than the newest purchase.
- Are natural or 'clean' products safer for this? No. Several of the commonest contact allergens in current patch-test series are fragrance components and botanical extracts, which is exactly what natural formulas contain more of.
- How do I reintroduce products without ruining the experiment? One product at a time, with at least five to seven days between each, and nothing else changing. The delay in this condition is what makes patience mandatory.
- What does stripping my routine back actually mean? Down to three things: a bland cleanser, a bland moisturiser, and a mineral sunscreen by day. Nothing else, for several weeks, without substitutions.
- Why does the rash appear days after the contact? Allergic contact dermatitis is a delayed cell-mediated reaction. Immune cells have to be recruited to the site, which takes roughly twenty-four to seventy-two hours.
- Could the cream treating it be the thing causing it? Yes, and it is a recognised trap. Preservatives, lanolin, propylene glycol, topical antibiotics and even corticosteroid molecules themselves are all documented contact allergens.
- Could my shampoo be causing a rash on my face? Very plausibly. Rinse-off products run down the face, neck and back, and the pattern of a rash along the hairline, ears and eyelids is a classic tell.
- Why does it come back every time the course ends? Because the cream treated the inflammation, not the cause. A rash that returns predictably after each course means the exposure never stopped.
- How do I actually get referred for patch testing? Ask for it by name, and give the specific reason: a rash that recurs without an identified cause, or one that returns each time a treatment course ends.
- Is treating a contact rash safe in pregnancy? Nearly all of it is. Emollients, petrolatum, oatmeal and gloves carry no caveats, and mild to moderate topical steroids are preferred over potent ones in pregnancy.
- What does contact dermatitis look like on brown or black skin? Often violet, grey, dark brown or simply darker rather than red, with thickening and scale more prominent. The itch and the pattern carry more information than the colour.
- Which gloves should I actually wear for wet work? Waterproof gloves with thin cotton liners underneath, worn only as long as the task needs. Sweat trapped inside a glove is itself an exposure.
- If patch testing names my allergen, is that a cure? Close to it, but the cure is the avoidance rather than the name. Outcomes track how completely the allergen is removed, not how confidently it was identified.
- What actually happens during a week of patch testing? Three appointments in one week: allergens taped to your back on day one, first reading around day two, second reading around day four. No showers or sport in between.
- What is the reliable way to read a label for my allergen? Learn its aliases first, then scan the full ingredient list rather than the front of the pack. One molecule frequently appears under several different names.
Sources and further reading
The staging, escalation points, and therapy descriptions on this page are anchored to published clinical guidelines rather than editorial judgment.
What this page is built on
- British Association of Dermatologists' guidelines for the management of contact dermatitis 2017
- North American Contact Dermatitis Group Patch Test Results: 2021-2022
The studies behind this pathway
The page above makes a handful of claims worth being able to check: that putting a name to an allergen changes how the disease behaves and not merely how it is filed, that taking a chemical off the shelf lowers a whole country's rate of allergy to it, and that the treatment tier for chronic hands has genuinely moved in the last two years. These are the papers behind those, and behind the smaller decisions too. Every link was resolved against its own PubMed record while this page was written, rather than assembled from a remembered identifier.
- British Association of Dermatologists' guidelines for the management of contact dermatitis 2017 The management framework the whole ladder traces to: investigation first, avoidance as the treatment, topical therapy alongside it, and the indications for referring someone for patch testing.
- North American Contact Dermatitis Group Patch Test Results: 2021-2022 The running census of what people are actually allergic to in North America, and the source for naming nickel, fragrance chemistries and preservatives as the leading positives rather than guessing at them.
- European Society of Contact Dermatitis Guideline for Diagnostic Patch Testing-Recommendations on Best Practice (Update 2026) The current European best-practice document for how patch testing is done — series selection, the two readings, and the reason the delayed reading is not optional.
- Effect of Patch Testing on the Course of Allergic Contact Dermatitis and Prognostic Factors That Influence Outcomes The claim that a name changes the disease and not just the paperwork: severity and quality-of-life scores fell six months after testing, and fell furthest in the people who could still recall their allergens and had actually changed something.
- The repeated open application test (ROAT) The reintroduction step, which is a home-scale version of this test — repeated application of one substance to one small site, read over about a week, and positive in most people whose patch test was positive.
- Nickel allergy following European Union regulation in Denmark, Germany, Italy and the U.K The argument that regulation is a treatment: nickel positivity fell in young women across Denmark, Germany and Italy after the EU restricted nickel release from jewellery, across a dataset of 180,390 patch-tested patients.
- Methylchloroisothiazolinone and Methylisothiazolinone 10 Years After Regulation: A Case Story of Liquid Soaps and Shampoos The more careful half of the preservative story — a decade after the isothiazolinone limits, marketed products largely comply and yet allergy persists, which the authors read as the permitted level being set too high.
- Skin care education and individual counselling versus treatment as usual in healthcare workers with hand eczema: randomised clinical trial The education-and-counselling arm of the first rung: healthcare workers who were taught skin protection and counselled on their own exposures had measurably better hand eczema five months later than those given usual care.
- Interventions for preventing occupational irritant hand dermatitis The honest placement of barrier creams and moisturisers in prevention — nine trials, 2,888 workers, and a moisturiser effect that may matter clinically against a barrier-cream effect that probably does not.
- Effectiveness of skin protection measures in prevention of occupational hand eczema: results of a prospective randomized controlled trial over a follow-up period of 1 year The reason the hands rung asks for both protection and repair rather than either: over a year in 800 metalworkers, the arm doing both came out ahead of the arms doing one.
- A double-blind, randomized study to assess the effectiveness of different moisturizers in preventing dermatitis induced by hand washing to simulate healthcare use That not all emollients behave alike under repeated hand washing, and that regular application protects barrier function rather than wearing it out — the mechanism behind 'after every wash'.
- Prognosis of occupational hand eczema: a follow-up study The occupational section's sober numbers: a year after recognition, a quarter of occupational hand eczema was still severe or worse, with an atopic background and older age predicting the poorer course.
- Hand eczema among hairdressing apprentices in Denmark following a nationwide prospective intervention programme: 6-year follow-up The long-term follow-up that keeps the occupational advice honest — a training intervention that worked at 18 months had no visible advantage six years later, with a fifth of the trade still reporting hand eczema.
- Tacrolimus 0.1% vs mometasone furoate topical treatment in allergic contact hand eczema: a prospective randomized clinical study The steroid-sparing option on the hands rung: tacrolimus ointment and a mid-potent steroid finished level across every measure at 90 days in patch-test-positive hand eczema.
- Efficacy and safety of pimecrolimus cream 1% in mild-to-moderate chronic hand dermatitis: a randomized, double-blind trial The larger trial behind topical calcineurin inhibitors in hand dermatitis — 652 patients, pimecrolimus against its vehicle, with treatment success and itch relief both favouring the drug.
- Efficacy and safety of delgocitinib cream in adults with moderate to severe chronic hand eczema (DELTA 1 and DELTA 2): results from multicentre, randomised, controlled, double-blind, phase 3 trials The chronic-hand tier's newest entry, and the reason it is described as a genuine change: two phase 3 trials of delgocitinib cream against vehicle, which is what a licence specifically for chronic hand eczema was built on.
- Efficacy and safety of oral alitretinoin (9-cis retinoic acid) in patients with severe chronic hand eczema refractory to topical corticosteroids: results of a randomized, double-blind, placebo-controlled, multicentre trial Oral alitretinoin's standing for severe chronic hand eczema that has already failed potent topicals, including the dose-dependence and the relapse rate after stopping.
- An observer-blinded randomized controlled pilot trial comparing localized immersion psoralen-ultraviolet A with localized narrowband ultraviolet B for the treatment of palmar hand eczema Why hand phototherapy is presented as a choice between two comparable routes rather than a ladder: immersion PUVA and localised narrowband UVB improved palmar hand eczema similarly.
- Comparison of cyclosporine and topical betamethasone-17,21-dipropionate in the treatment of severe chronic hand eczema Ciclosporin's place among the systemic options — matched against a potent topical steroid in severe chronic hand eczema, with neither separating from the other on disease activity.
- Methotrexate use in allergic contact dermatitis: a retrospective study Methotrexate in allergic contact dermatitis specifically, where the evidence is a 32-patient chart review rather than a trial — which is exactly why it sits among the later options and not among the first.
- Efficacy and safety of dupilumab in patients with severe chronic hand eczema with inadequate response or intolerance to alitretinoin: a randomized, double-blind, placebo-controlled phase IIb proof-of-concept study Dupilumab in severe chronic hand eczema that had already failed or could not tolerate alitretinoin — a small proof-of-concept trial, and the reason it is named as an option rather than a step.
- A European multicentre photopatch test study The photoallergy section in full: 1,031 patients photopatch tested across 12 countries, with topical anti-inflammatory gels causing more photoallergy than any sunscreen filter, and the newer filters causing very little.
- Periorbital dermatitis--a recalcitrant disease: causes and differential diagnoses The eyelid problem, examined: periorbital dermatitis that keeps recurring has a long differential, and contact allergy accounts for a substantial share of it once someone looks.
- Contact dermatitis: a practice parameter-update 2015 The North American practice parameter, used here for the position that anyone suspected of having both irritant and allergic disease should be patch tested rather than sorted by history alone.
- "Slime": A trending cause of isothiazolinone contact allergy in children The children's section's most modern example — a preservative allergy arriving through a craft material, and a reminder that a child's exposures are not a smaller version of an adult's.
Everything on this page traces back to the sources below. Contact dermatitis's evidence lives in an unusual place — less in drug trials, more in guidelines and the huge patch-test registries that track which allergens are actually causing trouble year to year.
Clinical guidelines and registry data
The BAD guideline is the most complete management document; the NACDG series is the running census of what people are actually allergic to.
- British Association of Dermatologists' guidelines for the management of contact dermatitis 2017 British Journal of Dermatology The management framework this page's ladder structure leans on — investigation, avoidance, topical therapy, and when patch testing is indicated.
- North American Contact Dermatitis Group Patch Test Results: 2021-2022 Dermatitis The most recent cycle of the North American registry: nickel, fragrance chemistries and preservatives leading, and the methylisothiazolinone epidemic receding.
- Allergic contact dermatitis revisited: A comprehensive review JAAD Reviews A current, thorough academic review of mechanisms, patterns and management.
Patient organisations and information
Written to be read.
- Eczema types: Contact dermatitis overview American Academy of Dermatology The AAD's public-facing overview — causes, the irritant/allergic split, and treatment.
- Contact dermatitis NHS (UK) Symptoms, common triggers, and when to see a GP.
- Contact dermatitis — diagnosis NHS (UK) What patch testing involves from the patient side.
- Contact Dermatitis Overview American Academy of Allergy, Asthma & Immunology The allergy-specialty view of the same condition, useful on the immediate-versus-delayed distinction.
Take the charts with you
Print exactly the piece you need. Each chart is one landscape page — no prose, no controls, sized to pin up or hand to someone — and the full document is the whole pathway as it reads on screen. Every printout carries the date, the source, and a line making clear it is not a diagnosis.
Printing happens in your browser. Your answers stay private — saved on this device, and to your free account when you're signed in.