Condition	Characteristics
Acne conglobata	Inflammatory nodules and pseudocysts with marked scarring, typically on the face, sternum, or back; more common in boys
Acute contact dermatitis	Rapid appearance of poorly circumscribed erythema, papulovesicles, or blisters, often with weeping areas
Eczema herpeticum	Usually occurs with atopic dermatitis; initial small, isolated vesicles abruptly group over an area of eczematous skin; lesions have central umbilication, but quickly become hemorrhagic, crusted, and eroded
Eosinophilic folliculitis	Usually occurs with advanced human immunodeficiency virus infection or AIDS, although it may be idiopathic; pruritic papules or pustules on the face, upper back, and arms
Molluscum contagiosum	Pearly white, umbilicated papules; caused by molluscum contagiosum virus (poxvirus)