The lesion depicted is a fairly well circumscribed patch of aggregated papules coalescing to form a large area of lichen planus on the ankle. Lichen planus is commonly located on the wrists and ankles but can occur anywhere on the body including the scalp, in the mouth or on the genitals. The lesions are often grouped and consist of flat-topped, shiny, polygonal papules with a distinct violaceous color and a lacy whiteness over the surface.

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