A callus is a painless thickening of skin caused by repeated pressure or irritation. Corns and calluses can affect both sexes, all ages, except infants. A small, painful, raised bump on the side or over the joint of a toe. Corns are usually 3mm to 10mm in diameter and have a hard center. A rough, thickened area of skin that appears after repeated pressure or irritation.
Pressure causes cells in the irritated area to grow at a faster rate, leading to overgrowth.
Activities that involve pressure on the hands or knees, such as carpentry, writing, or guitar playing. Your child should not wear shoes that fit poorly. Your child should avoid activities that create constant pressure on specific skin areas. When possible, the child should wear protective gear, such as gloves or knee pads. Medical history and physical exam by a doctor of medicine or podiatrist.