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What is a corn?

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Corns generally form at pressure points, typically the bottom of the feet and the sides of toes. They can be painful.

A hard corn is a small patch of thickened, dead skin with a central core. A soft corn has a much thinner surface and usually forms between the fourth and fifth toes. A seed corn is a tiny callous that can be very tender if it's on a weight-bearing part of the foot. Seed corns tend to occur on the bottom of the feet, and some doctors believe this condition is caused by plugged sweat ducts.

SOURCES: The Mayo Clinic. Community Health Care Medical Library.

Reviewed by Lisa Bernstein on March 27, 2017

SOURCES: The Mayo Clinic. Community Health Care Medical Library.

Reviewed by Lisa Bernstein on March 27, 2017

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What skin conditions are related to HIV/AIDS?

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