先天性听力障碍

定义

显性和隐性基因都存在，可导致轻度至重度损伤。如果一个家庭有显性耳聋基因，它将代代相传，因为即使只从父母一方遗传，它也会在后代身上表现出来。如果一个家庭有隐性基因引起的遗传性听力障碍，则不一定会表现出来，因为它必须从父母双方传给后代。听力障碍是在语言习得之前持续存在的，这是由于先天性条件造成的。

Both dominant and recessive genes exist which can cause mild to profound impairment. If a family has a dominant gene for deafness it will persist across generations because it will manifest itself in the offspring even if it is inherited from only one parent. If a family had genetic hearing impairment caused by a recessive gene it will not always be apparent as it will have to be passed onto offspring from both parents. Hearing impairment is sustained before the acquisition of language, which occurs due to a congenital condition.

子条目 共 5 条

• AB50.0先天性传导性听力损失
• AB50.1先天性感音神经性听力损失
• AB50.2先天性混合性听力损失
• AB50.Y其他特指的先天性听力障碍
• AB50.Z未特指的先天性听力障碍