About
Calluses and corns are skin problems often found on the feet. A callus is a thick, hardened skin on the bottom of the foot that protects the skin from too much friction. They are often found on the ball of the foot, the heel and under the big toe.
A corn forms when two toes rub together, causing thicker skin with inflamed tissue underneath. Corns between the toes have soft cores, while those on the top of a toe are hard corns.
Both of these skin growths are caused by excess pressure and friction and can result from overuse, from an abnormal gait, and by wearing shoes that are either too tight or too loose.