| Definition : A small area of skin, usually on the foot, that has become thick and hard from rubbing or pressure as a result of increased production of surface skin (ie, the dead cell layer). Podiatry defines a callus as a skin lesion, and if it becomes cracked or internally separates, infection can follow, often with no warning signs. Calluses may lead to other problems such as serious infection. Shoes that fit well aid in reducing callus formation. Calluses are important risk factors for diabetics, in part because of changes in skin or vasculature characteristic of feet and lower legs in diabetics. See also: Foot care. |