Stevens-Johnson syndrome as an unusual adverse effect of azithromycin.

Stevens-Johnson syndrome mostly involves the skin and mucous membranes. The diagnosis is made when the characteristic rash appears 1 to 3 weeks after exposure to a known stimulus and cannot be explained by some other diagnosis. A 62-year-old woman was admitted for evaluation of toxo-allergic dermatitis and collagenosis. Ten days prior to admission she was taking a course of azithromycin for upper respiratory tract infection. After a few days she was feeling better but maculopapular, erythematous rash developed over her palms, accompanied by fever and chills as well as reddish discoloration around her eyes. Within the next few days the rash progressed to the feet. Routine hematologic, biochemical and immunologic studies did not confirm the diagnosis of inflammatory rheumatic disease. Corticosteroid therapy with methylprednisolone (1 mg/kg) for the presumed Stevens-Johnson syndrome was started and her condition improved in several days; she became afebrile and her skin lesions gradually disappeared. There is only one report, in a child, documenting the association of Stevens-Johnson syndrome with azithromycin, as in this patient.