前庭阵发症

定义

前庭阵发症（VP）的特征是反复发作眩晕或头晕，持续数秒到数分钟，通常一天多次。发作通常自发发生，但偶尔也可能由头部位置改变引起（这需要与良性阵发性位置性眩晕区分）。可能伴随症状是短暂耳鸣发作或听力改变。在无发作间隔期内，可发现轻度至中度前庭或听力功能损害。第八神经的神经血管交叉压迫是假定的机制。

Vestibular paroxysmia (VP) is characterised by recurrent spells of vertigo or dizziness, lasting seconds to minutes, often many times a day. Attacks usually occur spontaneously but may occasionally be induced by changes of head position (which then needs to be distinguished from benign paroxysmal positioning vertigo). Possible accompanying symptoms are short attacks of tinnitus or changes in hearing. In the attack-free interval mild to moderate impairments of vestibular or audiological function may be found. Neurovascular cross-compression of the eighth nerve is the assumed mechanism.

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• 前庭阵发症