1.病例介绍 郝某,男,55岁,因右下肢麻木、无力1周,于1998年10月18日入院,入院诊断:右下肢麻木无力原因待查,入院第三天做腰椎穿刺,测脑压力为260mmHg,遵医嘱给20％甘露醇250ml静脉点滴,100滴/分,当液体输入5分钟,病人主诉气短,随之面部、四肢、胸腹部出现红色皮疹,伴有奇痒,测体温37.1℃,脉搏90次/ 1. Case description Hao Mou, male, 55 years old, because of the right lower limb numbness, weakness 1 week, was admitted to hospital on October 18, 1998, admission diagnosis: the right lower limb numbness weakness to be investigated, the third day of admission to do lumbar puncture, measured Brain pressure 260mmHg, as directed to 20% mannitol 250ml intravenous drip, 100 drops / min, when the liquid input for 5 minutes, the patient complained of shortness of breath, followed by facial, limbs, chest and abdomen red rash, accompanied by itching, body temperature 37.1 ℃, pulse 90 times /