半侧面肌抽搐的特点是面肌发生持续不自主的阵挛性收缩或细小颤动.通常从一侧的眼轮匝肌开始,逐渐扩展到同侧口周及其它面部肌肉,但一般不累及额肌.多见于中、老年,尤为女性患者.发作时即使在睡眠中仍可持续抽搐不止.症状常随情绪波动而加重,虽可有暂时性缓解,但常复发而且 Hemifacial seizures are characterized by involuntary clonic or minor fibrillation of the facial muscles, usually starting from the orbicularis oculi on one side and progressively expanding to the ipsilateral oral perineal and other facial muscles, but generally without involvement More common in the elderly, especially female patients in the attack even in sleep can continue to twitch more than the symptoms often aggravate mood swings, although there may be temporary relief, but often recurrence and