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What is This is seen commonly in and explain in detail?
Surface of the papules in lichen planus often reveals a network of grey lines (Wickham's striae). Typically seen in oral mucosa Oral lichen planus (LIE-kun PLAY-nus) is an ongoing (chronic) inflammatory condition that affects mucous membranes inside your mouth. Oral lichen planus may appear as white, lacy patches; red, swollen tissues; or open sores. These lesions may cause burning, pain or other discomfo. Ref: Harrison 19e pg: 349