1997年5月,我县某农村小学学龄儿童因接种乙脑疫苗集体发作转换型癔症37例,男9例,女28例;年龄为10岁～14岁;接种至发病2小时～8小时不等。临床共同表现为头痛、头晕、呕吐、腹痛、四肢乏力、麻木,部分患儿有四肢阵发性抖动,不能行走。发作多受家长情绪及暗示影响,众人面前发作时间延长。发作时体检均无神经系统阳性体征。37例中 In 1997 May, a rural primary school-age children in our county due to vaccination JE vaccine group attack conversion hysteria in 37 cases, 9 males and 28 females; aged from 10 years old to 14 years; vaccination until onset of 2 hours to 8 hours Wait. Clinical manifestations of headache, dizziness, vomiting, abdominal pain, limb weakness, numbness, some children have paroxysmal jitter, can not walk. Seizures and more affected by the emotional implications of parents, the attack time extended in front of everyone. No physical examination of the nervous system positive signs of attack. 37 cases