Corns & Callus
Corns and calluses mostly develop on the feet or toes and can be very painful to walk on, especially where they press on the nerves surrounding the skin.
A callus is a flattened area of thick, hard dead skin that has developed on the sole of the foot where there is a lot of weight and pressure exerted.
A corn is a more localised and highly concentrated point of thick hard dead skin, usually located at a pressure point such as under a toe joint (known as a hard corn).
Corns can also develop between the toes due to moisture and friction of one toe against the other (referred to as soft corns).