Corns and calluses are both areas of thickened skin that form in response to repeated friction or pressure, but they aren't the same thing: corns are small and well-defined with a hard, painful center, while calluses are larger, diffuse patches of tougher skin. Both are your body's way of protecting itself from irritation — the trouble starts when the underlying pressure never lets up, and the skin keeps thickening past the point of comfort.
Almost everyone develops a callus or two at some point, especially on the feet. Most are harmless and respond well to simple home care. But recurring or painful corns and calluses are often a sign that something about your foot structure, gait, or footwear is putting too much pressure in one spot — and that's worth a closer look.
What's the difference between a corn and a callus?
Corns are small, sharply defined areas of thickened skin, often with a dense, painful core. They typically form on the tops and sides of the toes, or between toes, where bone rubs against a shoe. Because the pressure is concentrated in a small area, corns tend to hurt more than calluses, especially with direct pressure.
Calluses are broader, more diffuse patches of thickened skin without a defined center. They usually appear on weight-bearing areas — the ball of the foot or the heel — and cause a dull soreness rather than sharp pain. Calluses are common and often not a problem on their own, but very thick calluses can crack or become uncomfortable.
What causes corns and calluses to form?
Both develop from repeated friction or pressure against the skin. Common contributors include:
- Tight or narrow shoes that squeeze the toes together
- Shoes with too much room, allowing the foot to slide and rub
- High heels, which shift extra weight onto the forefoot
- Structural foot issues like hammertoes, bunions, or flat feet that change how pressure is distributed
- Not wearing socks, or wearing seams that rub against the skin
- Repetitive activities such as running or standing for long periods
Because the root cause is almost always mechanical — pressure concentrated in one spot — corns and calluses tend to come back if that underlying pressure pattern isn't addressed.
How should I care for a corn or callus at home?
For mild, uncomplicated corns and calluses, simple home care is usually enough:
- Soak the area in warm water for 5–10 minutes to soften the thickened skin
- Gently file with a pumice stone or emery board — never cut or shave the skin yourself
- Moisturize daily with a cream containing urea or salicylic acid to keep skin supple
- Cushion and protect the area with a moleskin pad or corn cushion to reduce friction
- Switch footwear to shoes with a wider toe box and adequate cushioning
Avoid over-the-counter medicated corn pads containing salicylic acid if you have diabetes, poor circulation, or reduced sensation in your feet — they can burn healthy skin and lead to complications.
When should I see a podiatrist instead of treating it myself?
See a podiatrist if a corn or callus is painful, keeps returning after home care, or appears to be caused by an underlying bone deformity such as a hammertoe or bunion. In the office, we can safely trim thickened skin, evaluate your foot structure and gait, and recommend footwear changes or custom orthotics to redistribute pressure so the problem doesn't keep coming back. For a corn or callus tied to a structural issue, addressing the underlying cause is often the only way to prevent it from returning.
People with diabetes, peripheral neuropathy, or poor circulation should never try to treat corns or calluses themselves. Reduced sensation makes it easy to injure the skin without noticing, and a small wound can progress to an ulcer or infection before it's felt. If you have diabetes, professional diabetic foot care and regular foot exams are the safest way to manage corns, calluses, and any other skin changes.
How can I prevent corns and calluses from coming back?
Prevention comes down to reducing the friction and pressure that caused them in the first place:
- Choose shoes with a roomy toe box and good arch support
- Wear moisture-wicking socks to reduce rubbing
- Use protective pads on areas prone to friction
- Moisturize regularly to keep skin flexible
- Address underlying structural issues, such as with custom orthotics, if pressure keeps concentrating in the same spot
Medically reviewed by the physicians at Wasatch Foot & Ankle Institute. Our board-certified, fellowship-trained podiatrists provide foot and ankle care in Farmington and South Ogden, Utah. This article is for general education and is not a substitute for an in-person evaluation.