小儿急性偏瘫是由许多不同病因引起的综合征,表现为突然卒中发作,一侧或双侧肢体相继发生瘫痪。作者总结1981年以来收治的原因不明的无热型小儿急性偏瘫22例。通过对发病年龄、临床表现、实验室检查及治疗效果的观察,认为:(1)小儿急性偏瘫的病因至今不明,可能系病毒或病毒感染后变态反应引起脑动脉炎所致。(2)发病年龄3岁以下占82％, Acute hemiplegia in children is caused by many different causes of the syndrome, manifested as a sudden stroke attack, one or both sides of the limbs have been paralyzed. The authors conclude 22 patients with unexplained pediatric acute hemiplegia of unknown origin since 1981. By the age of onset, clinical manifestations, laboratory tests and the observation of the treatment effect, that: (1) The cause of acute hemiplegia in children is still unknown, may be caused by virus or virus allergy caused by cerebral arteritis. (2) The age of onset under 3 years accounted for 82%