[Disulone hypersensitivity syndrome].

Hypersensitivity to dapsone (Disulone) is a rare side effect of sulfone therapy. The diagnosis is based on variable clinical manifestations and laboratory findings dominated by hyperthermia, skin eruptions and a mixed form of hepatitis. We observed a case of hypersensitivity to dapsone in a 57-year-old woman who was treated with Disulone for cicatricaial pemphigoid. Clinical manifestations and laboratory results returned to normal 3 weeks after drug withdrawal. This case is interesting because the skin eruptions classically described were not observed. In addition this is apparently the first case reported of such a hypersensitivity syndrome occurring during treatment of autoimmune bullous dermatosis.