Linear IgA bullous dermatosis associated with ulcerative colitis

A 41-year-old woman developed skin vesicles one week before examination. She had been suffering from ulcerative colitis since the age of 30. Histologic examination of a vesicle showed a subepidermal bulla accompanied by mononuclear leukocyte infiltration intermingled with eosinophils and neutrophils. Eosinophilia was also noted. Direct immunofluorescent test revealed linear deposits of IgA in the basement membrane zone.