Corns and Calluses
Corns and calluses are thickened areas of skin that occur when the skin is exposed to excessive friction or pressure. Corns are small, round areas of thickened skin that typically occur on the toes. Calluses are larger, flat areas of thickened skin that often occur on the palms of the hands or the soles of the feet.
Corns and calluses are most likely to develop on the feet, since they are caused by pressure and friction. People who are at risk for developing corns and calluses include those who wear ill-fitting shoes, have bunions or hammertoes, or walk barefoot often.