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Lichen planopilaris (LPP) affects the scalp and hair. It is a form of lichen planus, an inflammatory condition affecting the skin and mucous membranes. Symptoms may include scaly skin and redness around hair follicles, bald patches, and pain, burning, or itching on the scalp. Tiny, red bumps (papules) may appear around hair clusters. LLP can cause scarring which leads to permanent hair loss (cicatricial alopecia). There are 3 forms of LPP which differ by the pattern and location of symptoms: classic LPP, frontal fibrosing alopecia, and Lassueur Graham-Little Piccardi syndrome. The cause of LPP is unknown. It is thought to be an auto-immune disorder of the hair follicles. A diagnosis of LPP is made based on a clinical exam and microscopic examination of a piece of tissue from the affected area. Treatment options may include different oral and topical medications and light therapy.[15641][15642][15643]
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