By Disease Name > Ecthyma

Ecthyma

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lesions initiated by group A beta-hemolytic strep, but quickly become contaminated with staph
features similar to impetigo:  lesions begin as vesicles or bullae, but then rupture to form adherent crust that covers a crateriform ulcer (rather than the shallow erosion of impetigo)
usually <10 lesions; typically on legs (from scratch or insect bite);  heal with scarring
10 days of dicloxacillin or cephalexin (Keflex; 1st generation).