牛皮癬(銀屑病)患者的後代一定會患牛皮癬嗎?

有人以為,銀屑病既然是一種遺傳性疾病,後代也不可避免會患銀屑病。但答案是否定的。銀屑病具有遺傳性,主要是指銀屑病患者家族成員有易患銀屑病的傾向,而且這種易患傾向與多基因有關,多個基因並不一定都遺傳給下代,即使都傳給了下代,如果沒有後天誘發因素的影響,也不一定發病。所以,銀屑病患者可以與正常人一樣擁有健康的後代。只是在日常生活中,有銀屑病家族史的人,要比其它人更注意避免誘發因素。

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