Quick answer. Corns and calluses are areas of thickened, hardened skin that form where the feet face repeated pressure or friction, usually from footwear or the way you walk. Calluses are broad, flat patches over weight-bearing areas like the soles; corns are smaller and more defined, often with a tender central core on or between the toes. They are usually harmless and respond to better-fitting shoes, cushioning and a podiatrist gently paring (debriding) the hard skin. Do not cut or shave them yourself, especially if you have diabetes or poor circulation, where this risks wounds and infection. See a doctor if they are painful, recurring, or you have diabetes.
Corns and calluses are among the most common foot complaints. They form as a natural protective response when skin is exposed to repeated pressure or rubbing – often from tight, loose or high-heeled shoes, or from the way your foot bears weight when you walk. In Singapore, frequent sandal and closed-shoe wear and long hours on your feet can both contribute.
While usually harmless, they can become painful and, in people with diabetes or poor circulation, can be an early warning sign of pressure problems that need professional care. This guide explains where they form, how to manage them safely, why you should never cut them yourself, and when to see a podiatrist.
At a glance
| Feature | Corn | Callus |
|---|---|---|
| Appearance | Small, round, well-defined, often with a hard central core | Larger, flat, broad patch of thickened skin |
| Where it forms | On or between toes, bony prominences | Weight-bearing areas such as soles, heels, balls of feet |
| Pain | Can be tender, especially when pressed | Usually painless unless very thick |
| Main cause | Concentrated pressure or friction, e.g. tight shoes | Spread-out repeated pressure and friction |
What causes corns and calluses
They develop from repeated pressure or friction on the skin. Common contributors include:
- Ill-fitting footwear – tight or narrow shoes squeeze the foot, while loose shoes let it slide and rub
- High heels, which concentrate pressure on the ball of the foot
- Foot mechanics – the way you walk and how weight is distributed can overload certain spots
- Foot shape differences such as bunions or hammer toes that rub inside shoes
- Going barefoot or wearing shoes without socks
Where they form and how they feel
Calluses tend to appear as broad, rough, flat patches over weight-bearing areas – the soles, heels and balls of the feet – and are usually painless. Corns are smaller and more sharply defined, often with a hard central core, and form on or between the toes or over bony points. Corns can be tender, particularly a ‘soft corn’ that develops in the moist area between toes.
Safe self-care at home
For most healthy people, the goal is to remove the cause of pressure:
- Switch to well-fitting, roomy, cushioned shoes with a wide toe box
- Use protective padding or cushions over the affected area
- After a bath or shower, gently smooth thickened skin with a pumice stone or foot file, then moisturise
Do not cut, shave or dig out corns and calluses yourself, and avoid medicated corn plasters or acid treatments without advice – these can damage healthy skin and cause wounds or infection.
Professional podiatry treatment
If a corn or callus is painful, large or keeps coming back, a podiatrist can help. Debridement (paring) – carefully trimming away the thickened skin with sterile instruments – is the safest and most effective way to reduce the bulk and relieve pressure, often giving immediate relief. A podiatrist can also assess your footwear and foot mechanics and prescribe orthotics or padding to redistribute pressure and stop the problem returning. In Singapore, podiatrists work in restructured hospitals and private clinics.
A special warning for people with diabetes
If you have diabetes, poor circulation or reduced sensation in your feet, do not attempt to treat corns or calluses yourself. Nerve damage can mean you don’t feel a cut or wound, and cutting hard skin can lead to ulcers and infection that are slow to heal. Always have corns and calluses managed by a podiatrist or doctor, and check your feet daily for any new pressure marks, redness or breaks in the skin.
When to see a doctor or podiatrist
- The corn or callus is painful or interfering with walking
- It keeps coming back despite changing footwear
- You notice redness, warmth, swelling, pus or a wound – signs of infection
- You have diabetes, poor circulation or numbness in your feet
Recurring corns and calluses often signal an underlying footwear or biomechanical issue, which a podiatrist can identify and correct.
What to expect at a podiatry visit
At a podiatry appointment, the clinician examines the affected area, identifies whether it is a corn or a callus, and looks for the underlying cause, such as a pressure point, foot shape or footwear problem. The main treatment is debridement, carefully paring away the thickened skin with sterile instruments, which is not painful and often gives immediate relief. The podiatrist may also assess how you walk and check your shoes, and can recommend padding, cushioning or custom orthotics to redistribute pressure so the problem is less likely to return. Bring the shoes you wear most so they can be checked.
How to prevent corns and calluses coming back
- Wear well-fitting, roomy shoes with a wide toe box and enough depth; avoid tight, loose or high-heeled shoes.
- Use protective padding or cushions over areas that rub.
- After bathing, gently smooth hard skin with a pumice stone or foot file, then moisturise.
- Address foot-shape issues such as bunions or hammer toes that cause rubbing, with professional advice.
- Wear socks with closed shoes to reduce friction.
Common questions
Why do my corns keep coming back?
Recurring corns usually mean the source of pressure has not been removed. A podiatrist can identify the footwear or biomechanical cause and correct it with shoe changes, padding or orthotics.
Are medicated corn plasters safe to use?
These contain acids that can damage healthy surrounding skin and cause wounds, so use them only on advice. They are not suitable if you have diabetes, poor circulation or reduced sensation in your feet.
When should I see a doctor urgently?
Seek prompt care if you notice redness, warmth, swelling, pus or a wound, which suggest infection, especially if you have diabetes.
Related guides
- Best Podiatry Clinics in Singapore — our editorial shortlist
- podiatry clinics directory
- Fungal nail infection
- Achilles tendinitis
- Morton's neuroma
Sources
- HealthHub (MOH) – Foot Care and common foot problems
- NHS – Corns and calluses
- NCBI StatPearls – Corns
- AAOS OrthoInfo – Corns
Related conditions & guides
Related conditions and guides you may find useful:
- Bunions and Flat Feet in Singapore
- Diabetic Foot Care in Singapore
- Ingrown Toenail Treatment in Singapore
- Plantar Fasciitis and Heel Pain in Singapore
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