A case of bullous pemphigoid showing antigenic competition‐like phenomenon

Abstract

Abstract Antigenic competition in the skin is a phenomenon in which the current dermatitis is distributed away from the area of previously existing dermatitis. Bullous pemphigoid may present such phenomenon, even if the responsible antigen was the same.

Keywords

• antigenic competition
• autoimmune bullous disease
• bullous pemphigoid
• current eruption
• pre‐existing eruption