眼瞼痙攣(blepharospasm)或瞼痙攣,是一種不明原因、不自主的面神經支配區肌肉的痙攣和抽搐,導致眼瞼持續性閉合的局灶性肌張力障礙[1][2]。患側眼輪匝肌皺眉肌頻繁且不自主痙攣性收縮,引起陣發性或持續性瞬目動作[3]。這現象可以同時發生於雙眼,亦有左右眼分別痙攣的現象。

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眼瞼痙攣應該與更常見且更輕微,不自主的眼瞼震顫作區分,後者稱為眼瞼肌顫[4](myokymia,肌纖維顫搐)或束顫[5](fasciculation,肌束震顫)。

漢語的「眼皮跳」和粵語的「眼眉跳」應該是眼瞼肌顫(eyelid myokymia)[6][7][8],而非眼瞼痙攣。

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