Definition: A thickened and hardened part of the skin; a callosity

Medical terminology: hyperkeratosis


Calluses are hard, thickened areas of skin. These layers of thick, dead skin can cause foot pain if they develop on weight bearing areas, such as under the ball of the foot or on the heel. Excessive callus formation can lead to the breakdown of tissue underneath the hard skin, which can lead to a serious infection.

Attempting to cut off the hard skin yourself is dangerous as you can cut yourself creating the chance of an infection. Keeping your skin moisturized can alleviate some of the discomfort caused by the callus.

Calluses can be caused by:

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  • Excessive pressure or friction
  • Uneven weight distribution
  • Faulty foot mechanics
  • Ill-fitting footwear
  • Certain diseases and disorders