Impetigo is a common superficial skin infection that is highly contagious and is mostly seen in children. It can be either blistering or non-blistering. The non-blistering (non-bullous) form which makes up the majority of infections, is usually caused by staph aureus but occasionally strep pyogenes. It usually starts with small reddish patches measuring about 2-4mm that appear on the face, around the nose and mouth. The patches evolve to form small blisters, which commonly rupture, ooze for a few days, then form a yellowish-brown crust.The blistering (bullous) form of impetigo is caused by staph aureus. This most commonly occurs in young infants and may be associated with fever. It starts as a small blister particularly on the face, trunk or buttocks. The blister will slowly enlarge until it ruptures, leaving behind shiny skin, which then becomes eroded. If left untreated, impetigo usually clears on its own. However, since there is a possibility of complications, it is best to consult with a doctor.