Corns and Calluses on Feet: How to Treat and When to See a Podiatrist

What is the difference between a corn and a callus?

Both are layers of hardened, thickened skin (hyperkeratosis), but they differ in shape and location 1Ref 1Freeman DB (2002).Corns and calluses resulting from mechanical hyperkeratosis.Clinical definition of corns vs calluses, causes including ill-fitting footwear and foot deformities, and conservative management with appropriate footwear and padding.:

• Calluses are broad, flat areas of thickened skin that develop on pressure points — typically the ball of the foot, the heel, and under the toes. They usually do not hurt.
• Corns are smaller, round or conical thickenings with a hard central core. Hard corns form on the tops or sides of toes; soft corns (which stay moist) form between the toes, especially between the fourth and fifth. Corns tend to be more painful because the hard core presses inward toward nerves.

Both form as a protective response: the skin builds up to cushion repeated rubbing or pressure. The underlying cause — not just the thickened skin — is what needs addressing for lasting relief.

What causes corns and calluses?

Common causes include 1Ref 1Freeman DB (2002).Corns and calluses resulting from mechanical hyperkeratosis.Clinical definition of corns vs calluses, causes including ill-fitting footwear and foot deformities, and conservative management with appropriate footwear and padding.2Ref 2Brainard BJ, Sammarco GJ (1991).Managing Corns and Plantar Calluses.Causes including abnormal foot mechanics and footwear; conservative treatment first-line; podiatric referral for resistant lesions.:

• Ill-fitting shoes — too tight, too loose, or with narrow toe boxes that crowd the toes
• Walking barefoot or without socks on hard surfaces
• Foot deformities such as bunions, hammertoes, or bone spurs that create abnormal pressure points
• Repetitive activity — long hours of standing, specific sports, or manual labor

When a corn or callus keeps returning after treatment, it usually means the underlying pressure source has not been removed.

How can I safely treat a corn or callus at home?

For people without diabetes, peripheral vascular disease, or nerve damage, home care is generally safe 1Ref 1Freeman DB (2002).Corns and calluses resulting from mechanical hyperkeratosis.Clinical definition of corns vs calluses, causes including ill-fitting footwear and foot deformities, and conservative management with appropriate footwear and padding.:

1. Soak the area in warm water for 5-10 minutes to soften the skin. 2. Gently file with a pumice stone or emery board — use a circular motion, stop before the skin becomes pink or raw, and never draw blood. 3. Moisturize afterward with a thick cream or lotion containing urea or salicylic acid, which helps soften thickened skin over repeated applications. 4. Protect the area with a non-medicated donut-shaped foam pad while the skin heals. 5. Address footwear — the most important step. Shoes with a wider toe box, extra depth, or softer uppers remove the triggering pressure.

Do not cut or shave corns at home. This risks creating an open wound, especially dangerous for people with reduced blood flow or sensation 3Ref 3National Library of Medicine (2025).Diabetes — taking care of your feet.Diabetes-specific guidance: do not self-cut corns or use salicylic acid products; use pumice stone on wet skin; let healthcare team manage calluses; daily foot checks required..

Do over-the-counter corn removers work?

Over-the-counter salicylic acid pads, drops, and plasters work by chemically softening and breaking down hardened skin. They can be effective for mild corns and calluses in otherwise healthy feet.

Important cautions:

• Never use salicylic acid products if you have diabetes, poor circulation, or reduced feeling in your feet. These products can damage surrounding healthy skin and create wounds 3Ref 3National Library of Medicine (2025).Diabetes — taking care of your feet.Diabetes-specific guidance: do not self-cut corns or use salicylic acid products; use pumice stone on wet skin; let healthcare team manage calluses; daily foot checks required..
• Read instructions carefully and protect surrounding skin with petroleum jelly before applying.
• If you see no improvement after several weeks, see a podiatrist rather than escalating treatment.

When should I see a podiatrist for corns or calluses?

A podiatrist should treat your corns or calluses — rather than home care — in these situations:

• You have diabetes, peripheral vascular disease, or peripheral neuropathy 3Ref 3National Library of Medicine (2025).Diabetes — taking care of your feet.Diabetes-specific guidance: do not self-cut corns or use salicylic acid products; use pumice stone on wet skin; let healthcare team manage calluses; daily foot checks required.
• The corn is painful enough to affect walking
• The skin has broken open, shows redness, warmth, or discharge (signs of infection)
• Home treatments have not worked after several weeks
• You suspect an underlying bone spur or foot deformity is the root cause 2Ref 2Brainard BJ, Sammarco GJ (1991).Managing Corns and Plantar Calluses.Causes including abnormal foot mechanics and footwear; conservative treatment first-line; podiatric referral for resistant lesions.

A podiatrist can debride (carefully pare down) corns and calluses quickly and safely in-office, prescribe custom orthotics to redistribute pressure, and address structural causes like hammertoes or bunions.

How do I prevent corns and calluses from coming back?

Prevention focuses on eliminating the source of pressure 1Ref 1Freeman DB (2002).Corns and calluses resulting from mechanical hyperkeratosis.Clinical definition of corns vs calluses, causes including ill-fitting footwear and foot deformities, and conservative management with appropriate footwear and padding.2Ref 2Brainard BJ, Sammarco GJ (1991).Managing Corns and Plantar Calluses.Causes including abnormal foot mechanics and footwear; conservative treatment first-line; podiatric referral for resistant lesions.:

• Wear shoes that fit well — enough length, width, and depth for your foot shape
• Wear moisture-wicking socks of appropriate thickness
• Use cushioned insoles or custom orthotics to redistribute load away from problem areas
• Treat foot deformities (bunions, hammertoes) that create abnormal pressure points
• Moisturize feet regularly to maintain skin flexibility
• Have regular podiatry visits if you have diabetes — annual foot exams are a standard part of diabetes care 3Ref 3National Library of Medicine (2025).Diabetes — taking care of your feet.Diabetes-specific guidance: do not self-cut corns or use salicylic acid products; use pumice stone on wet skin; let healthcare team manage calluses; daily foot checks required.