A callus is a hard and thick patch of skin caused by friction or pressure, often on hands or feet. Calluses can be treated with salicylic acid, a pumice stone, or by a podiatrist. Calluses are not ...

This patient had a clavus, more commonly known as a “corn.” Corns are localized epidermal thickenings caused by repeated friction or pressure. They occur over bony protuberances, usually on the feet ...