Dry gangrene

Dry gangrene is a form of gangrene that occurs when the blood supply to tissue is cut off, causing the tissue to die. Unlike wet gangrene, which is characterized by a bacterial infection and a moist, decaying appearance, dry gangrene is not infected and the affected tissue dries out and shrinks.

Causes

Dry gangrene is most commonly caused by arteriosclerosis, or hardening of the arteries, which narrows the blood vessels and reduces blood flow to the extremities. Other causes can include diabetes, thrombosis, and frostbite.

Symptoms

The symptoms of dry gangrene include a change in skin color to a dark brown or black, a clear line between healthy and damaged skin, and a shriveled appearance to the affected area. The area may also be cold to the touch and numb.

Treatment

Treatment for dry gangrene involves restoring blood flow to the area if possible, or amputation if the gangrene is advanced. Medications may be used to prevent blood clots or to control pain. In some cases, hyperbaric oxygen therapy may be used to increase the amount of oxygen in the blood and promote healing.

Prevention

Prevention of dry gangrene involves managing underlying conditions such as diabetes and arteriosclerosis, and avoiding exposure to cold temperatures. Regular exercise, a healthy diet, and not smoking can also help to prevent the condition.

See also

• Wet gangrene
• Gas gangrene
• Necrosis
• Amputation

Dry gangrene Resources
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