Frostbite occurs when a portion of the body is exposed to subfreezing temperatures, resulting in temporary or permanent damage to tissues. Exposed areas such as arms, legs, fingers, toes ,face, nose, and ears are usually affected.
Causes of Frostbite
Frostbite is caused by the formation of ice crystals in skin and blood vessels. The temperature and length of exposure, will determine the level of tissue injury or death.
Signs and Symptoms of Frostbite
During exposure symptoms include gradual numbness, hardness and paleness in the affected area. During rewarming it is common to experience pain, tingling or burning in the affected tissues. There may be changes in the skin color, from white to red, then purple, and blisters frequently develop in severe cases.
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Medical Content Last Updated on 07/12/2008
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