Lichen planus

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Summary of Lichen planus

Lichen planus

Lichen planus is a disease of the skin and/or mucous membranes that resembles lichen. The cause is unknown, but it is thought to be the result of an autoimmune process with an unknown initial trigger. Lesions are characterized by the 6 Ps: pruritic, purple, polygonal, planar, papular and plaques.

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Lichen planus

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Lesions of the (body surface) in lichen planus manifest as reticular white lines known as Wickham striae.

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A 35-year-old woman comes to the office because of an itchy rash on her wrist. She says that it started four days ago and the itching is worsening. Physical examination shows several small, violet papules located on the anterior wrists. Which of the following findings is most likely to be seen in this patient?