The decay of body tissue in a part of the body where the blood supply is obstructed.
Gangrene occurs when a body part loses its blood supply, often from injury (such as trauma from an accident) or infection to the specific area.
Gangrene can have a variety of symptoms, depending on where the decay is located on the body. If an individual obtains gangrene close to the skin, they may experience discoloration, numbness or discharge in the effected area.
If an individual obtains gangrene, he or she should seek out urgent evaluation and treatment from a physician. The dead tissue should be removed, either by operation or amputation, to allow healing of the surrounding living tissue and prevent further infection.