This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Atrophic lichen planus (LP) is a rare form of lichen planus, which is a condition that affects the skin and/or mouth. In atrophic LP, specifically, affected people develop pale papules or plaques with an atrophic (broken down tissue) center. Although these papules can be found anywhere on the body, they most commonly affect the trunk and/or legs on skin areas previously affected by classic lichen planus. The exact underlying cause of atrophic LP is unknown. Treatment is not always necessary as some cases of atrophic LP resolve on their own. Mild cases can often be managed with topical steroids, while more intensive therapies may be required for severe cases.
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