Calluses and corns form as protective pads of skin in response to repeated friction or pressure. Causes include:
Calluses
—Any activity that applies repeated friction or pressure to an area of skin, including:
- Weight lifting (hands)
- Using tools (hands)
- Playing a stringed instrument (hands)
- Running long distances (feet)
- Kneeling to lay carpet or tile (knees)
- Walking on hard surfaces without shoes (feet)
Corns
—Any activity or condition that applies repeated friction or pressure to the toes, including:
- Wearing ill-fitting shoes
- Bunching of socks around toes
- Socks with seams that rub against the toes
- Foot abnormality causing a protrusion that rubs against footwear
A risk factor is something that increases your chance of getting a disease or condition.
- Professions or physical activities that cause repeated friction or pressure on the skin
- Wearing ill-fitting footwear