Foot Corn (Clavus): Definition, Symptoms, Causes, and Treatment A foot corn—or clavus—is a type of callus It is an area of thickened skin that forms to protect your foot from constant pressure or rubbing The steady irritation promotes the growth of tougher cells that grow to protect the problem area Foot corns tend to appear on: Your toes The tops of your
Corns and calluses - Symptoms and causes - Mayo Clinic Corns and calluses are thick, hardened layers of skin that develop when the skin tries to protect itself against friction or pressure They often form on feet and toes or hands and fingers If you're healthy, you don't need treatment for corns and calluses unless they cause pain or you don't like