例1 刘某,女,12岁。不明原因出现突发性双下肢无力发软,步行时突发突止不能行走4个月,每周发作4～6次不等,每次发作1～3分钟,当地医院以周期性麻痹、肌无力等治疗,发作频率增加,发作时无典型的癫痫症状,查体:BP 14/9.3kPa(105/70mmHg),意识清,心肺(一),颅神经(一),四肢肌力、肌张力正常,腱反射存在,血清K~+、Na~+、Cl~-、Ca~(2+)正常,做蹲立动作时,正巧碰上发作1次,突感双下肢无力不能站立,需家人扶持,约半分钟后,自诉可以活动行走了,当时查脑电地形图示中度异常,按运动抑制性癫痫投以丙戊酸镁片0.2g,3次/日口服,4天后发作频率减少1/2,有时一天1次都未发作。 例2 陈某,男,4岁。突发突止双下肢不能活动3 Example 1 Liu, female, 12 years old. Unexplained sudden emergence of both lower extremities weakness, sudden sudden walk can not walk for 4 months, 4 to 6 times a week episodes ranging from 1 to 3 minutes per attack, the local hospital with periodic paralysis, muscle Weakness and other treatment, increased seizure frequency, seizures without typical symptoms of epilepsy, physical examination: BP 14 / 9.3kPa (105 / 70mmHg), clear consciousness, cardiopulmonary (a), cranial nerves Normal, tendon reflex exist, serum K ~ +, Na ~ +, Cl ~ -, Ca ~ (2+) normal squatting action, squatting happened once hit, sudden sense of weakness can not stand lower extremity, Support, about half a minute later, the private prosecution activities can be walked, then check the EEG showed moderate abnormalities, according to exercise inhibitory epilepsy cast magnesium valproate tablets 0.2g, 3 times / day orally, 4 days after the seizure frequency decreased 1/2, sometimes one day, no attack. Example 2 Chen, male, 4 years old. Sudden sudden stop both lower extremities can not activity 3