Epidermolysis bullosa acquisita(EBA) is a rare chronic subepidermal bullous disease wit,h autoantibodies to type VII collagen. Clinically, EBA usually begins after the age of 50 with pruritic vesicle and blister formation often on traumatized skin and leaves atrophic scars and milia. A 48-year-old woman visited our department with a 5 month history of a generalized pruritic blistering eruption that began on the scalp and spread to the face, trunk, extremities, and lip. The biopsy specimen revealed dermoepidermal separation, infiltration of perivascular mononuclear cells. Direct immunofluorescence(DIF) showed positive linear deposition of IgG at the BMZ. Bullous pemphigoid was diagnosed and treated with prednisolone 20-40mg daily. The skin lesions were improved after 2 week. During follow-up, trauma-induced vesicles occurred frequently and healed with remaining malia and scars. The biopsy specimen of trauma induced vesicles revealed subepidermal blisters and inflammatory cell infiltration in the dermis. DIF of perilesional skin showed positive linear deposition of IgG at the BMZ. DIF of salt split skin showed linear IgG deposits on the dermal floor. EBA was confirmed. (Kor J Dermatol 1997;35(4): 814-818)