Symptoms may include fever, swelling, and complaints of excessive pain. The initial skin changes are similar to cellulitis or abscess, thus making the diagnosis at early stages difficult. Hardening of the skin and soft tissue and swelling beyond the area of skin changes are commonly present in those with early<unk>  changes. The redness and swelling usually blend into surrounding normal tissues. The overlying skin may appear shiny and tense. Other signs which are more suggestive of<unk>  changes (but present in later stages in 7 to 44% of the cases) are: formation of bullae, bleeding into the skin which is present before skin necrosis (skin turning from red to purple and black due to thrombosis of blood vessels), presence of gas in tissues, and reduced or absent sensation over the skin (due to the necrosis of the underlying nerves). Rapid progression to shock despite antibiotic therapy is another indication of<unk> .<unk>  changes affecting the groin are known as Fournier gangrene. However, those who are immunocompromised (have cancer, use corticosteroid, on radiotherapy, chemotherapy, HIV/AIDS, or prior organ or bone marrow transplantation) may not show typical symptoms. Immunocompromised persons also have twice the risk of death from<unk>  infections, so higher suspicion should be maintained in this group. File:Very early symptom of<unk> .The very first symptom of<unk> . The center is clearly getting darker red (purple). File:Early symptoms of<unk> .Early symptoms of<unk> . The darker red center is going black. File:Necrotizing<unk>  caused by Vibrio Vulnificus.Necrotizing<unk>  type III caused by vibrio vulnificus.
Necrotizing fasciitis
Cellulitis
Ischemic fasciitis
Gas gangrene
Pyomyositis
Plantar fasciitis
Fournier gangrene
Abscess