Corn is a common foot ailment characterised by a rough patch of skin in areas subjected to friction and/or pressure (top of the toes, heel, between the toes, etc). Corns can be of two kinds: soft corns and hard corns. Hard corns usually appear on hard dry, flat areas of skin, while soft corns are often found between the toes. Corns are characterised by a conical shape with a broad top and a pointy bottom. Corns are not serious, but can cause discomfort or pain, due to the irritation or inflammation caused by the pressure on the underlying skin.