本報告提出兩家族夠有6例的非症候群遺傳性重聽。欲診斷遺傳性重聽,必須合乎下列原則:①幼年期發作;②原因不明;③兩側對稱性感音性重聽;④在家族成員中多發;⑤平衡功能檢查正常。這些病人的聽力檢查結果歸納起來有3特徵:①兩側性,左右對稱性,感音性重聽。②同一家族內,重聽者的聽力圖型一致。③較遲發症者,重聽的程度亦較輕。
Hereditary hearing loss means juvenile onset, unknown etiology, and bilateral symmetrical sensorineural hearing loss. It occurs in a family with many affected members, and vestibular function test reveals normal. This paper presents two families with hereditary hearing loss, each with six affected members.