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Author: Dr Amanda Oakley, Dermatologist, Dept of Dermatology Waikato Hospital, Hamilton, New Zealand, 2005.
Corns and calluses are common skin lesions in which there is a localised area of hard, thickened skin.
Corns and calluses are caused by response to friction and pressure. Repetitive injury results in the skin trying to protect itself from blistering. The basal epidermal cells (keratinocytes) increase in number resulting in thicker prickle cell layer and thicker stratum corneum.
The most common site for a corn or a callus is on the hand or foot, but any area of skin may be affected. Examples include:
The important thing is to relieve the pressure on the affected area of skin.
Reduce skin thickness.
Ease the discomfort of painful cracks (fissures)
It may be helpful to visit a podiatrist for treatment of a callus or corn on the foot.
Sometimes protruding bone has to be surgically removed by an orthopaedic surgeon, for example bunion repair.
Books about skin diseases
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