A callus is a small area of skin, usually on the foot, that has become thick and hard from rubbing or pressure. Calluses may lead to other problems such as serious infection. Shoes that fit well can keep calluses from forming.
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... being 948 km (589 miles) long, and 25 to 170 km (16 to 105 miles) wide, with an area of 78,000 km² (24,560 sq. miles). The capital of Sakhalin is Yuzhno ...