Necrotizing fasciitis or fasciitis necroticans, commonly known as "flesh-eating bacteria", is a rare infection of the deeper layers of skin and subcutaneous tissues (fascia). Many types of bacteria can cause necrotizing fasciitis (eg. Group A streptococcus, Vibrio vulnificus, Clostridium perfringens, Bacteroides fragilis), of which Group A streptococcus is the most common cause.
The infection occasionally starts with pharyngitis (sore throat), but more often begins locally, at a site of trauma, which may be severe (such as the result of surgery), minor, or even non-apparent. The affected skin is very painful, red, hot and swollen. Skin color may progress to violet and blisters may form, with subsequent necrosis (death) of subcutaneous tissues. Patients with necrotizing fasciitis typically have a fever and appear very ill. More severe cases progress within hours, and the death rate is high, about 25%.
More on [ Necrotizing fasciitis ]

National Necrotizing Fasciitis Foundation - Includes organization information, factsheet on the disease, prevention, symptoms, discussion group, survivors, and memorials.
Family Practice Notebook.com: Necrotizing Soft Tissue Infection - Fact sheet covering risk factors, symptoms, diagnosis and treatment.
Meta Description: [ Dermatology: Bacteria: Cellulitis Necrotizing Fasciitis ]
Hardin, MD: Necrotizing Fasciitis/Flesh Eating Bacteria - University of Iowa site with links to photographs.
Meta Description: [ From the University of Iowa, the *best* lists of Internet sources in Necrotizing Fasciitis / Flesh Eating Bacteria. ]
Invasive Group A Strep - Factsheet from the New York State Department of Health.
Meta Description: [ Communicable Disease Fact Sheet, Streptococcal Infections (invasive group A strep) ]
Medline Plus Medical Encyclopedia: Necrotizing Soft Tissue Infection - Fact sheet, with illustrations, from the U.S. National Library of Medicine and the National Institutes of Health.
Necrotizing Fasciitis/Myositis - Factsheet from Health Canada.
Meta Description: [ Necrotizing fasciitis (nek-roe-tie-zing fah-shee-eye-tis) is more commonly known as 'flesh-eating disease'. It is a rare illness that causes extensive tissue destruction and can lead to death. In Canada, there are 90-200 cases of necrotizing fasciitis each year. ]
Overcoming Necrotizing Fasciitis, the Flesh-eating Disease - Includes personal story of surviving the disease and links.
Meta Description: [ In May of 1998, I was infected by necrotizing fasciitis, the flesh-eating bacteria. This is the story about my miraculous recovery. ]
T. S. Bolton's Survivor Story - Personal account of one man's experience with this disease. Contains a link to graphic pictures of his recovery.
The Lee Spark NF Foundation - UK support group for people who have been affected by severe streptococal infections or necrotising fasciitis. Includes disease and support group information.
Meta Description: [ Working in conjunction with Doreen and the Lee Spark NF Foundation I would like to investigate the psychological impact of NF. ]
The Merck Manual: Necrotizing Subcutaneous Infections - Includes cause, symptoms, diagnosis, prognosis, and treatment.