In 1945, Hoffman described the first case of lupus-like disease that appeared after treatment with sulfadiazine. Since then, more than 70 drugs have been implicated in the induction of this disease. Of these, hydralazine, procainamide, chlorpromazine, isoniazide, methyldopa, quinidine, and penicillamine are the most common. Patients affected by drug-induced lupus may have all the manifestations...