What is a corn on your foot?

A corn is a small area of dead skin that develops on the foot as a result of repeated friction or pressure. This friction is due to the skin rubbing against your shoe or against another part of your foot. The dead skin cells build up and create a hard, thick patch of skin.

Corns are usually located on the toes or the ball of the foot. They can be painful, especially when you walk or stand for long periods of time.