This image displays thickening of the skin typical of lichen simplex chronicus. This image displays thickening of the skin with pronounced skin lines and some scaling on the neck typical of lichen simplex chronicus. Lichen simplex chronicus is caused by rubbing and scratching an area of skin. This child has been rubbing or scratching the area between the heel and the ankle, leading to dark, rough areas of thickened skin known as lichen simplex chronicus.
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Lichen Simplex Chronicus:
A parent's guide to condition and treatment information

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Picture of Lichen Simplex Chronicus: This image displays thickening of the skin typical of lichen simplex chronicus. Divider line
This image displays thickening of the skin typical of lichen simplex chronicus.
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Signs and Symptoms
Although lichen simplex chronicus can occur anywhere on the body, it is most commonly seen in the following areas:
  • Inner wrists, forearms, and elbows
  • Sides and back of the neck
  • Shins, ankles, and tops of the feet
  • Anogenital areas (vulva or scrotum, anus)
Each patch of lichen simplex chronicus appears as leathery, thickened skin in which the normal skin lines are exaggerated. The thickened skin is darker than surrounding skin (hyperpigmented). This hyperpigmentation is even more apparent in darker-skinned individuals.

Individuals with lichen simplex chronicus report periodic itching that is most intense at night and at other times when they are quiet and still.
Last Modified: 29 Jan 2008

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