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半面痉挛是外周性面神经病变,发病时同侧面肌发生阵挛性痉挛,同时面部出现奇形怪状的扭曲以及因眼睑不断抽搐所致的功能性盲。咀嚼亦可受到影响。本病原因还不够清楚;经常采用各种疗法,但至今仍无令人完全满意的效果。本病常见于中年妇女,发病隐袭,抽搐多由一侧眼轮匝肌开始,扩展到同侧面神经支配的大部或全部肌肉。痉挛完全是非自主的,可因情绪紧张而加重,入睡后仍不休止。虽常为无痛,但亦可合并神经痛。本病应与自发性睑痉挛、面肌抽搐、联带运动及病灶性癫痫发作等相鉴别。本病病因虽多不清楚,但某些因素应予注意:根据面冲经解剖部位不同,发病部位可区分为桥小脑角、颞骨及颞骨外三种。许多报告表明本病患者有桥小脑角
Hemifacial spasm is a peripheral facial neuropathy with onset of clonic spasticity on the same side of the body, bizarre distortions on the face, and functional blindness due to eyelid twitching. Chewing can also be affected. The cause of the disease is not clear enough; often use a variety of therapies, but so far there is no completely satisfactory results. The disease is common in middle-aged women, the incidence of insidious, convulsions and more from the side of the orbicularis muscle, extending to most or all of the same innervation of the muscles. Spasm is completely involuntary, can be aggravated by emotional stress, still not stop after falling asleep. Although often painless, but also neuralgia. The disease should be with spontaneous blepharospasm, facial muscle convulsions, joint movement and focal epileptic seizures and other phase identification. Although the etiology of this disease is unclear, some factors should be noted: According to different facial anatomic dissection, the incidence of the site can be divided into cerebellopontine angle, temporal bone and temporal bone outside the three. Many reports show that patients with cerebellar cerebellar angle