[Extensive Fournier gangrene. A dermatologic emergency].

Fournier gangrene is a necrotizing fasciitis of the perineal and genital region, which almost exclusively affects men. The cause is a polymicrobial infection associated with superficial trauma, urological diseases and operations, as well as colorectal diseases. Diabetes mellitus, alcoholism, immunosuppression and other severe illnesses are frequent co-factors. Immediate administration of systemic broad-spectrum antibiotic therapy with coverage of both gram-positive and gram-negative bacteria combined with surgical debridement and intensive medical care can lower the high mortality rate of this condition.