1　病例　女,56岁。因左上下肢麻木、消瘦、无力、抖动3～4年于1999年11月2日入院。患者4年前无明显诱因出现左上下肢麻木、无力、消瘦,1年内进行性加重伴肉跳。1年后出现左侧肢体不自主抖动,多于静止时出现,紧张时加重,睡眠后消失。抖动渐加重,且累及右侧肢体,同时动作迟缓、 1 case female, 56 years old. Due to left upper limb numbness, weight loss, weakness, jitter 3 to 4 years in November 2, 1999 admission. 4 years ago, patients with no obvious incentive to appear left upper limb numbness, weakness, weight loss, progressive aggravating within 1 year with meat. A year after the left limb involuntary jitter, more than when the static, increased tension, disappear after sleeping. Jitter gradually increased, and involving the right limb, while slow movement,