Lichen nitidus is a chronic inflammatory disease of unknown cause characterized by 1–2 mm, discrete and uniform, shiny, flat-topped, pale flesh-colored or reddish-brown papules that may appear as hypopigmented against dark skin. Occasionally, minimal scaling is present or can be induced by rubbing the surface of the papules. The disease usually affects children and young adults and is painless and usually nonpruritic, although protracted itching may occur in some cases.
Lichen nitidus 通常出現在兒童和年輕人中,對性別和所有種族皆無差異。它表現為皮膚上有光澤的小平頂腫塊,直徑通常為 1 至 2 毫米。這些腫塊常見於手臂、腿部、腹部、胸部或陰莖部位。大多數情況無症狀,因而治療僅針對有症狀或影響美觀的病變。 Lichen nitidus most commonly presents in children and young adults and does not favor one sex or race. Lichen nitidus presents as multiple, discrete, shiny, flat-topped, pale to skin-colored papules, 1 to 2 mm in diameter. These lesions commonly present on the limbs, abdomen, chest, and penile shaft. It is usually asymptomatic, so treatment is generally for symptomatic or cosmetically disturbing lesions.