We wear new shoes, old shoes, or no shoes. We sometimes expect our feet to endure shoes that are too short, too narrow, or have inadequate cushioning and support. Foot pressure and friction are often caused by the bones of the foot pressing against the inside of a shoe or from two bones of the foot pressing together. This usually occurs when the second toe presses on the big toe or the fourth toe presses on the little toe. A result of this continued friction is the formation of thick hard areas of skin called corns.
Corns look like areas of thick skin on the toes.
Hard corns usually appear on the little toe while soft corns appear on the web between the toes. Calluses are thickened pads of skin, usually found on the bottom of the foot. People with flat feet are especially susceptible to them. The callus may be formed as a result of wearing shoes not wide enough for your foot. Gently use a pumice stone or callus file over the area.