例1,9岁,四肢活动障碍四年,头痛伴呕吐3～4天入院。四年前曾发热、呕吐伴腹泻,病程持续一周好转,病后出现四肢无力,双手不能持物,下肢不能站立被迫卧床一年。一年后肢体活动有恢复,病后二年能行走,但步态不稳。近4个月来有轻度头痛,入院前3～4天头痛加重伴频繁呕吐。体检:体温、脉搏、呼吸及血压均正常,神志清楚,对答切题,头围53cm,双瞳等大,对光反应存在,右眼球外斜10°有旋转震颤,右鼻唇沟浅,伸舌向右偏,右上肢轻瘫试验阳性,肌力V°,肌张力增强,腱反射活跃,病理反射未引出,昂白氏试验可疑阳性,跟 Example 1,9 years old, limb movement disorder for four years, headache with vomiting 3 to 4 days admission. Four years ago had fever, vomiting with diarrhea, the course of the disease continued to improve over the week after the onset of limb weakness, hands can not hold things, the lower limbs can not stand forced to bed for a year. A year after the recovery of limb activity, sickness can walk two years later, but the gait instability. Nearly 4 months have mild headache, 3 to 4 days before admission, headache aggravated with frequent vomiting. Physical examination: body temperature, pulse, respiration and blood pressure were normal, conscious, answering questions, head circumference 53cm, double pupil and other large, the light reaction exists, the right eye oblique oblique 10 ° spin tremor, right nasolabial fold shallow, To the right side of the right upper limb paralysis test was positive, muscle strength V °, muscle tone increased, tendon reflexes active, pathological reflex did not lead to the suspicious positive Ang White test, followed by