1.病例资料患者,男,30岁。因头痛、呕吐7天,双下肢无力4天,发作性意识丧失、肢体抽搐2小时入院。患者于7天前无明显诱因出现后枕颈部疼痛,伴恶心、呕吐。在当地镇医院拟诊“颈椎病”,予局部推拿无效。4天前出现双下肢无力,不能站立,并伴发作性双下肢不自主抖动,每次持续数分钟,自行缓解,每日发作十余 1. Case information patients, male, 30 years old. 7 days due to headache, vomiting, weakness in both lower extremities 4 days, loss of episodic consciousness, limb twitch 2 hours admission. The patient developed occipitocervical pain with nausea and vomiting after 7 days without apparent predisposition. In the local town hospital suspected “cervical spondylosis”, to local massage invalid. 4 days ago appeared lower extremity weakness, can not stand, and accompanied by two limbs involuntary jitter, each lasting several minutes, self-remission, more than a dozen daily attacks