Prognostic factors Fournier gangrene severity index (FGSI) scores > 9 predicts severity and mortality (J Urol 1995;154:89, J Postgrad Med 2008;54:102) FGSI: nine variables are assigned scores of 0 - 4, which are added together Fournier's gangrene: Gangrene can be a troublesome disease, but Fournier's gangrene is particularly worrisome. This type of gangrene attacks your genitals. Learn more. An overview of Fournier's gangrene, including causes, signs and symptoms, investigations and management (including surgical management) Fournier’s gangrene symptoms include intense pain, swelling, skin discolouration, foul odour, and systemic signs like fever or fatigue. Caused by bacterial infections that spread quickly it...