You Remember Your Worst Day as Typical. That's What the Diary Is For.
Fluctuating skin disease defeats memory in a direction researchers have actually measured — and most diaries fail because they record the wrong five things.
Therapies, Procedures & Devices
Measuring Skin Disease
The severity scores dermatologists and trials actually use — and how to bring a number to your appointment.
Articles in Measuring Skin Disease
"Apply Sparingly" Is the Most Expensive Instruction in Dermatology
A steroid cream that fails is usually a steroid cream that was never given at a real dose — and the unit that fixes it has existed, defined and measured, since 1991.
Itch Is a Number in Every Trial and a Shrug in Most Appointments
The symptom that does the most damage to daily life is the one patients describe with an adjective — and a four-second daily score is the difference between a vague complaint and a chart a clinician has to act on.
Body Surface Area: Why 'How Much of You' Decides Your Treatment
It is the dullest number in dermatology and one of the most consequential — and when four untrained observers estimated it on the same ten patients, they came back with figures two to four times the measured truth.
PGA×BSA: The Two-Minute Psoriasis Score You Can Actually Do at Home
Two numbers, one multiplication, and a correlation with the trial-standard index of around 0.90. It is the rare clinical measure a patient can run honestly on themselves — provided nobody has told you your palm is one percent of you.
What a PASI Score Actually Measures — and Why Your Trial Number Isn't Your Life
The scale every psoriasis drug is sold on was invented in 1978 as an efficacy endpoint for a 27-patient retinoid trial. It was never designed to describe how you are, and it shows.
Hurley Stage vs the HS Severity Scores: What Your Dermatologist Is Actually Measuring
"You're still Stage II" and "the treatment is working" are not contradictory statements. They are answers to two different questions, measured by two different instruments — and only one of them is designed to move.