They can sometimes occur on the thicker palmar or plantar skin surfaces. Frequent use of a writing implement may lead to a callus on the middle finger, commonly known as a "writer's bump".Ĭorns (also called clavi) are specially-shaped calluses of dead skin that usually occur on thin or glabrous (hairless and smooth) skin surfaces, especially on the dorsa of toes or fingers. Video game players may develop calluses on their thumbs, especially if using a controller with a poor D-pad. Dancers often develop calluses on the soles of their feet from dancing barefoot, which makes performing turns less difficult. String instrument players develop calluses where their fingers make contact with the strings, but these calluses are often desirable as they help alleviate the pain from the tension of the strings and make playing easier. Shoes that fit tightly can often produce calluses on the feet. Calluses are generally not harmful, but may sometimes lead to other problems, such as infection. Since repeated contact is required, calluses are most often found on hands or feet. In botany, the term is also used to announce a condition of thickened surfaces of leaves or other plant parts.
OverviewĪ callus (or callous) is an especially toughened area of skin which has become relatively thick and hard as a response to repeated contact or pressure. Associate Editor(s)-in-Chief: Kiran Singh, M.D.
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