Abstract
We treated five cases of necrotizing fasciitis. All patients suffered from poor diabetic control. Three out of five patients died of possible multiple organ failure and two patients survived. Early diagnosis is essential for necrotizing fasciitis. When a local inflammatory lesion due to infection exists in a patient with poor diabetic control, necrotizing fasciitis should be added into a differential diagnosis. In conclusion, early use of a broad spectrum antibiotic, early extended surgery, and the appropriate treatment for the underlying diseases seem to be important factors that influence the prognosis.