[Adquired epidermolysis bullosa. Immunopathological and ultrastructural studies].

A case of epidermolysis bullosa acquisita (EBA) in a 64 year old man is reported. The direct immunofluorescence showed a positive lineal anti IgG basement membrane on the affected skin (blisters and provocation tests) and on the univolved healthy skin. The electron microscopic studies showed a "dermolysis". In this patient it was not possible to find any pathological association. The EBA is usually associated with different processus but, sometimes, it could be isolated. Probably this clinicopathological field includes diverse badly delimited entities.