You may have a callus or a corn if you find or feel any of the following on the skin:
- A hard, raised bump
- Tenderness or pain under the skin
- A thick, rough patch of skin
- Flaky, dry skin
- A patch of skin that looks like dried wax
Although similar, corns and calluses are not the same thing. Corns are more likely to hurt, and can show up in places where there isn’t any friction on the skin.
Calluses and corns are caused by pressure or friction, usually from repeated rubbing that can happen as a result of:
- Poorly fitting shoes that slide on the foot and create friction
- Not wearing your socks correctly, so that the seam of the sock rubs on your foot
- Some sports or other activities, such as rock climbing
- Certain other medical conditions, such as bunions or hammertoes
Diagnosis and Tests
Your doctor will perform a physical exam to make sure there is no underlying condition that might be causing the hardened skin, like a wart or cyst. If your doctor thinks that a physical abnormality might be causing the condition, they may request an x-ray to help rule out or diagnose other conditions.
Most of the time, the best treatment for corns or calluses is to avoid or change the repetitive activity that has caused the condition, for example through wearing better-fitting shoes. A few other at-home treatments include:
- Soaking. Soaking the calluses in warm water can soften them so you can thin the thickened skin.
- Thinning. You can thin the callused skin with a washcloth, pumice stone, or emery board, any of which can be purchased in the beauty section of most general stores. Do not use anything sharp to thin the skin as this can create a wound and lead to pain or infection. Also, do not use the pumice stone if you have diabetes.
- Use lotion or other moisturizers, like coconut oil, on the calluses.
If your self-treatment efforts don’t work, or if the callus becomes painful, you should talk to your doctor about:
- Helping you remove the extra skin – do not try this on your own. If you make a mistake, it can lead to an infection.
- Shoe pads or other inserts that can help cushion your foot and stop the foot from rubbing so much.
- Surgery, which usually only happens if the callus is caused by some other underlying condition, such as bunions, hammertoes, or other conditions that may change the alignment of your foot.