what causes a corn on your foot

Corns on the foot are caused primarily by pressure and friction on the skin. This repeated irritation causes the skin to thicken and form a protective layer of hardened skin. The body's response to this pressure or friction is to create a thicker layer of dead skin to prevent damage, but this can lead to painful lumps known as corns, which are usually localized compared to more widespread calluses. Poorly fitting shoes, especially those that are too tight or have high heels, contribute significantly to this pressure. Other causes include abnormal walking motions, foot deformities, and activities that put repeated pressure on certain areas of the foot. Corns can form due to the rapid production of skin cells that don't shed normally, creating a hard cone- shaped structure pushing down on nerves, causing pain. Soft corns may develop between toes due to moisture in these areas. Corns are not caused by viruses and are not contagious.