Frostbite :
Frostbite, the freezing of body tissues, most commonly affects the fingers, toes, and face. It can occur due to internal heat loss in the extremities or through direct exposure to cold temperatures and windy conditions. Hypothermia and the constriction of the blood vessels caused by high elevations can also be contributing factors. Initially the affected areas feel cold, painful, and may be pale. As the tissues freeze, the pain subsides to numbness. Prevention is the best remedy, for many cases can be avoided by wearing adequate protection from the cold. Good footwear is essential in snowy conditions, particularly for winter treks. Wear warm gloves and use a scarf or balaclava to protect the face from wind and cold.
If you think you have frostbite, try to rewarm that part of the body by placing it under your armpit, between your legs, or even on someone else's stomach. If the frostbite is minor, the color and feeling will eventually return. In more serious cases the frozen tissue will feel hard, cold, and be unresponsive to warming. Do not rub the affected area with snow or try to restore circulation by rubbing it vigorously with your hands; do not immerse it in water to encourage thawing. Less damage will be done to a frozen foot by walking out on it than by thawing it too soon. A frozen foot or hand should be left alone until a medical facility can be reached.
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