Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单

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Lichen planus扁平苔藓

Lichen planus is an itchy, non-infectious rash, the cause of which is unknown.扁平苔藓是一种发痒，非感染性皮疹，原因是未知之数。 The rash can take from nine months to two years to clear, but once cleared it rarely occurs again.皮疹可以采取从九个月至两年，以清除，但一旦清理，也很少再次出现。

Lichen planus affects less than one person in 50, usually occurs in adults over the age of 30 and is slightly more common in women.扁平苔藓的影响少于一人在50 ，通常发生在成年人的30岁以上，并略有较为常见的妇女问题。

In approximately half of people with lichen planus, the inner surface of the mouth is affected.在大约一半的人与扁平苔藓，内表面口受到影响。 This is called oral lichen planus.这就是所谓的口腔扁平苔藓。

Lichen planus is not infectious or hereditary and it cannot be passed on.扁平苔藓是不是传染病或遗传性，且不能获得通过。