Corns and calluses are areas of hard skin on the feet caused by excessive pressure or from shoes rubbing. Corns are usually small and circular. Hard corns tend to develop on the top of toe joints or high pressure parts of the foot and soft corns develop between the toes where sweat keeps them moist. Calluses are wider and less well-defined and will often develop on the parts of the foot that take the most weight, such as the ball of the foot. Unlike a corn, it has no nucleus or root.

If they cause discomfort, corns and calluses can be treated by a Podiatrist, who can cut away the thickened skin. This build up of skin can be prevented by using a foot file and an emollient to soften the skin. Choosing insoles or silicone covers or more comfortable properly fitted shoes may also help with preventing corns.