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Trench foot

Trench foot is a special form of frostbite of the lower extremities that occurs during prolonged continuous cooling and moisture of the legs at moderate (above zero) external temperature (for example, in fishermen in the north, wearing wet shoes in trenches during hostilities - hence the name trench foot) .

However, with a trench foot, in contrast to the usual frostbite, signs of leg lesions develop gradually against the background of continued cooling. If it is possible to dry and warm the legs before the first signs of a lesion appear, and then they get wet again, then the trench foot pattern can develop immediately and violently. There are four stages of defeat. The first - after 12-15 days (sometimes 3-4) staying in the cold in wet shoes, pain, sensitivity disturbances, muscle weakness appear, especially in the toes. The second is accompanied by edema, redness of the skin. The first and second stages are reversible (light forms of the trench foot). In the third stage, first bubbles are formed on the fingers and the plantar surface of the feet, and then ulcers. The fourth stage of the trench foot is the death of deep tissues, which often turns into wet gangrene (see) or is complicated by anaerobic infection (see).

Treatment of lesions of the first and second stages - thermal procedures, ultraviolet irradiation; in the third and fourth stages - as in frostbite (see). Prevention : the use of waterproof shoes, the creation of conditions for its drying.