患者,男性。37岁,工人。因视力模糊半月余,左上下肢无力7天而入院。 入院前18天,患者突感右侧头痛,伴视物模糊,无发热,无恶心、呕吐。2天后症状好转。7天前出现左上下肢麻木、无力,遇冷时可引起左下肢抽搐,左手及 Patient, male. 37 years old, worker. More than half a month due to blurred vision, left upper limb weakness 7 days and admitted to hospital. 18 days before admission, the patient suddenly felt the right headache, with blurred vision, no fever, no nausea and vomiting. 2 days after the symptoms improved. 7 days ago left upper limb numbness, weakness, cold can cause left lower extremity convulsions, left and