[Stevens-Johnson syndrome, unusual urologic involvement].

Stevens-Johnson Syndrome is an adverse drug reaction, considered a severe type of erythema exsudativum multiforme, fatal in about 5%. Characterized by erythema with vesiculobullous lesions in skin and mucous membranes. Implicated drugs are mainly anticonvulsivants and sulphonamides. Prompt recognition and withdrawal of the suspected drug is essential in treatment. Denuded skin areas must be treated with the same principles of burns. Systemic immunosuppression, mainly corticosteroids, remain controversial. We report a case of Stevens-Johnson Syndrome in a 43 year-old male who developed disuria and genital lesions with a detachment of foreskin and glans penis.