眼睑痉挛(blepharospasm)或睑痉挛,是一种不明原因、不自主的面神经支配区肌肉的痉挛和抽搐,导致眼睑持续性闭合的局灶性肌张力障碍[1][2]。患侧眼轮匝肌、皱眉肌频繁且不自主痉挛性收缩,引起阵发性或持续性瞬目动作[3]。这现象可以同时发生于双眼,亦有左右眼分别痉挛的现象。
眼睑痉挛应该与更常见且更轻微,不自主的眼睑震颤作区分,后者称为眼睑肌颤[4](myokymia,肌纤维颤搐)或束颤[5](fasciculation,肌束震颤)。
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