An unusual bullous reaction in borderline leprosy

Abstract

A 45-year-old male patient suffering from borderline lepromatous leprosy with reaction, developed round or irregular, we\1 defined, large tense bu\1ae on existing leprosy lesions. There was deposition of IgG, IgM, IgA and fibrin along the basement membrane. It was not a bu\1ous drug eruption due to either rifampicin, dapsone or clofazimine, but a component of leprosy reaction. Difficulties in classifying as either Type I or Type II reaction are discussed.