淺談內耳眩暈症（美尼爾氏症候群）

Introduction of Vertigo (Meniere Disease)

內耳眩暈症為一種內耳病變，由於內耳迷路非炎症性積水導致迷路水腫及內淋巴系壓力增高，從而產生內淋巴腔擴大及內耳末梢器（科蒂氏器）缺氧，變性等病理變化，造成平衡神經功能失調，出現眩暈、噁心、嘔吐、耳鳴及聽力逐漸減退等症狀。通常為間歇性發作，頻率不一，眩暈的發作隨耳聾的進行而減輕，至完全耳聾時，迷路功能消失，眩暈發作亦告終止的疾病。

Ménière's disease is a disorder of the inner ear that causes severe dizziness (vertigo), ringing in the ears (tinnitus), hearing loss, and a feeling of fullness or congestion in the ear. It is believed to be related to an increase in volume and pressure of the endolymph of the inner ear that caused by labyrinthine hydrops or endolymphtic hydrops. The pathological changes include lymph cavities dilation and hypoxia/transformation of organ of Corti. Meniere’s disease is a chronic (ongoing) problem. Attacks may happen often, or only sometimes. As the disease progresses, vertigo can become less severe but hearing loss gets worse. In the end, with the loss of labyrinth function, the sufferers become deaf as a post and the attack of vertigo is no longer present.