This condition results from many hours or days of exposure to wet or damp conditions at a temperature just above freezing. The nerves and muscles sustain the main damage, but gangrene can occur. In extreme cases the flesh dies and it may become necessary to have the foot or leg amputated. The best prevention is to keep your feet dry. Carry extra socks with you in a waterproof packet. Dry wet socks against your body. Wash your feet daily and put on dry socks. This will be important for most all people after the pole shift due to the amount of rain we will get.
Some of the information above is from FM 21-76, Department of the Army SURVIVAL book, June 1992, which says on cover "approved for public release; distribution is unlimited.
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