Picture of Corns
A corn is a thickened area of skin that appears on a toe or on the top of a foot as a result of increased pressure. It may or may not be painful. A corn may develop due to friction when a part of the foot rubs up against an ill-fitting shoe. Corns typically do not require treatment. Medical attention is advised if a corn causes pain or an individual with a corn has other medical problems, such as diabetes or a circulatory disorder.
Text Reference: "Corns and Calluses." American Podiatric Medical Association.