半侧面肌痉挛是一种颅神经功能不全综合征,其特点是发病突然及轻度功能亢进,症状逐渐加重且日益频繁持久,最后功能丧失。一般采用破坏性治疗。八年前著者发现三叉神经痛的病人在三叉神经根入口部有小动脉横越压迫以致扭转,手术将以上小脑动脉移动后发作程度减轻、次数减少。在著者给第一例三叉神经痛的病人施行减压 Hemifacial spasm is a cranial nerve dysfunction syndrome, which is characterized by a sudden onset and mild hyperactivity, the symptoms gradually aggravate and increasingly frequent and lasting, the last loss of function. Destructive treatment is generally used. Eight years ago, the authors found that in patients with trigeminal neuralgia at the entrance to the trigeminal nerve root transversal compression caused by reverse, the operation will be more than the cerebellar artery movement reduced extent of attack, the number decreased. Decompression was administered to the patient in the first trigeminal neuralgia