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What is lichen planus and how does it affect your skin?

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Lichen planus is a common skin disorder that produces shiny, flat-topped bumps that often have an angular shape and a reddish-purplish color. Lichen planus can occur anywhere on the skin but is often found on the insides of the wrists and ankles, the lower legs, the back, and the neck. Some people have lichen planus inside their mouth, genital region, scalp, and nails. Thick collections of bumps may occur, especially on the shins.

Lichen planus occurs most often in adults aged 30 to 70. It is not common in very young or elderly people.

From: Common Skin Rashes WebMD Medical Reference

SOURCES:  

American Academy of Dermatology. 

Australasian College of Dermatology.

Reviewed by Debra Jaliman on August 27, 2019

SOURCES:  

American Academy of Dermatology. 

Australasian College of Dermatology.

Reviewed by Debra Jaliman on August 27, 2019

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What causes lichen planus?

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