Corns and calluses have many of the same causes. These include:
- Shoes that don’t fit properly. This is the most common cause of corns on the top of the feet. Shoes that are too tight or have areas that rub against your skin cause shearing, friction and pressure. Women who frequently wear high-heeled shoes often develop calluses on the balls of their feet from the downward pressure on this area when walking.
- Standing, walking or running for long periods of time.
- Physical hobbies, sports activities or work/labor that put pressure on your feet.
- Going barefoot.
- Not wearing socks with footwear.
- Having socks and/or shoe linings that slip and bunch up under your feet while in shoes.
- Walking with improper posture – walking too heavily on the inner or outer edge of your foot.
- Physical hobbies, sports activities or work/labor that cause repeated friction on an area of skin on your hands or fingers.
- Structural foot deformities or altered biomechanics (hammertoes, tailor’s bunions, deformities from birth).