A corn is a small area of skin on the foot, which is thickened and inflamed because of the pressure on it. It is typically round in shape, similar in appearance to a kernel of corn. A corn can be formed on the top of the smaller toes or in-between the fourth and fifth toes. Corns can be painful when pressed.
Common causes of corns include wearing tight or poorly fitting shoes that rub and place pressure on the toes, or developing a deformity affecting toe position and alignment, including bunions or hammertoe. A podiatrist can help offer additional recommendations, including treatment of hammertoe, bunions or other foot problems that may lead to recurring formation of corns.