A corn or callus is a thickening of the outer layer of the skin on your foot. Corns usually grow on the top of the foot, often at a toe joint. Calluses a) spread on the bottom of the foot, b) on the outer edge of a toe c) on the heel. Corns and calluses are your body's response to friction or pressure against the skin.
In either case, the outer layer of the skin thickens to protect the foot from unusual pressure. In many cases corns and calluses look bad but are not harmful. However, more severe corns and calluses can become infected, destroy healthy tissue, or affect foot movement. Corns and calluses can be controlled with help from one of our podiatric physicians here at Foot and Ankle Specialists.
Corns can range from a slight thickening of the skin to a painful, hard bump.
A callus may spread across the ball of your foot.