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患者男,28岁.额部褐色斑片10个月,左腰部及右前臂丘疹6个月.皮肤科情况:额部弥漫性褐色斑片,左腰部及右前臂可见线状分布的绿豆至黄豆大小紫红色和褐色多角形扁平丘疹,部分融合,其上覆少许白色鳞屑,口腔黏膜及指(趾)甲无异常.左腰部皮损组织病理示:表皮角化过度,基底细胞液化变性,真皮浅层致密淋巴细胞带状浸润.额部皮损组织病理示:表皮轻度萎缩,基底细胞灶状空泡化,真皮浅中层小血管及部分皮肤附属器周围中等量淋巴细胞、散在噬色素细胞浸润.诊断:线状扁平苔藓合并色素性扁平苔藓.“,”A 28-year-old male presented with brown patches on his forehead for 10 months and papules on his left waist and right forearm for 6 months. Dermatologic examination showed diffused brown patches on his forehead,and multiplepolygonal,mild scaly, flat-topped,violaceous or brown papules of 2～4mm in diameters following the Blascko's lines on his left waist and right forearm. Oral mucosa and nails were not involved. Histopathological examination of the papules on his left waist revealed epidermal hyperkeratosis,liquefaction of basal cells and a denseband-likelymphocytic infiltration in the upper dermis. Histopathological examination of the patch on his forehead revealed slight epidermal atrophy,focal vacuolization of basal cells,infiltration with moderate amounts of lymphocytes and sparse melanophages around vessels and appendages in the upper and middle dermis. Diagnosis of lichen planus linearis combined with lichen planus pigmentosus was made.