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Frostbite

What Is It? Frostbite is the freezing of body tissues (skin, muscle, bone) in extreme cold. At or below 59 degrees Fahrenheit, blood vessels close to the skin start to narrow (constrict). This helps to preserve your core body temperature. In extreme cold or when the body is exposed to cold for long periods, this protective strategy can reduce blood flow in some areas of your body to dangerously low levels. The combination…

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