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HealthInfo Waitaha Canterbury

Corns & calluses

Tona me raupā

CornA corn or callus is an area of thickened skin that forms at pressure points over bony areas of your foot.

A corn is a cone-shaped mass of skin pointing down into your foot. A callus is a dispersed, or wider, area of thickened skin that doesn't have a centre like a corn.

There are two main types of corns.

Corns can become infected and develop ulcers. This can be a serious complication for people with poor circulation, peripheral neuropathy and those who need special diabetes foot care.

Corns and calluses are two of the most common problems that podiatrists see.

Causes of corns & calluses

Too much pressure, usually with some friction, causes a corn or callus. The skin thickens up to protect itself from the pressure.

Too much pressure can be caused by:

Treating corns & calluses

You should never try to cut out a corn yourself, as you're likely to cut into your flesh and cause an infection. But there are things you can do to help relieve the symptoms.

If you have poor circulation or a long-term medical condition like diabetes or rheumatoid arthritis, it is not a good idea to use corn caps. This is because if you have frail skin or poor circulation, corn caps are very likely to cause an ulcer, which could become infected.

Getting help for corns & calluses

Your podiatrist will need to work out what is causing your corn or callus and what is the best way to manage it. If you have diabetes or poor circulation, it's especially important to see a podiatrist.

Your podiatrist is likely to consider several options for managing your corn or callus. These include:

There is a cost for a consultation and treatment with a private podiatrist. The cost of orthotics can vary depending on your foot needs, ranging from $100 to $850.

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Written by Canterbury podiatrists. Adapted by HealthInfo clinical advisers. Last reviewed April 2023.


Page reference: 53585

Review key: HICCA-28239