[Fulminant streptococcal gangrene of the lower limbs]

A 58 year old woman with Cushing's disease was admitted to hospital for acute ischaemia of the lower limbs due to fulminant streptococcal gangrene (necrosing fasciitis). A group A beta-haemolytic Streptococcus was isolated from the cutaneous lesions and the blood cultures. Despite antibiotic therapy and medical resuscitation, the patient died within 12 hours of her admission in a state of irreversible collapse. This gangrenous cellulitis, in which a hypersensitivity reaction plays a part in the pathophysiology, is a rare disease which is fatal in one half of cases. The diagnosis is based on a very marked alteration in the general state, the characteristics of the cutaneous lesions and, most importantly, the isolation of group A haemolytic Streptococci, which should be performed early so as to allow wide surgical excision, which remains the principal therapeutic measure, as rapidly as possible.