患者，女，45岁，因右侧三叉神经痛1年多，多种治疗无效，致使患者难以忍受，于1995年8月20日在当地某医院行三叉神经中枢性封闭，即口外法注射1．0ml无水酒精加普鲁卡因少许，于右侧卵圆孔注入，注射后患者感头晕、恶心、复机、视物模糊，经休息后头晕、恶心等症状有所减轻， Patients, female, 45 years old, due to right trigeminal neuralgia for more than one year, a variety of treatment ineffective, resulting in patients with unbearable, on August 20, 1995 in a local hospital trigeminal nerve center closed, that is, oral injection 1 .0ml anhydrous alcohol plus procaine a little on the right foramen ovale injection, the patient feeling dizzy, nausea, complex machine, blurred vision, rest after dizziness, nausea and other symptoms have eased,