Chronic bullous dermatosis of childhood.

Chronic blistering dermatosis of childhood (CBDC) in a 1-year-old black girl responded to the administration of sulfapyridine. CBDC is a rare blistering skin disease characterized by the presence of tense bullae and the linear deposition of IgA at the dermal-epidermal junction of lesional and perilesional skin. The disease may resemble bullous impetigo, bullous erythema multiforme, dermatitis herpetiformis, or pemphigus. The treatment involves the use of either dapsone or sulfapyridine.