失神癫痫又称小发作,在小儿癫痫中约占6%～12%,大多数为特发性,约15%患儿可查到病因,其中以脑炎最常见,其次为脑外伤、产伤等.1 临床表现单纯失神发作表现为突然短暂的意识丧失,没有先兆,语言中断,原来的活动停止,固定于某一体位,不跌倒,两眼茫然凝视,有时面色略显苍白,没有肌肉抽搐.发作持续2～10秒,一般不超过30秒. Absence of epilepsy, also known as small seizures, accounting for about 6% to 12% of children with epilepsy, most of the idiopathic, about 15% of children can be found in the cause, of which the most common encephalitis, followed by brain trauma, birth trauma Etc. 1 clinical manifestations of simply absence of seizures showed a sudden and temporary loss of consciousness, without aura, language interruption, the original activities stopped, fixed in a position, do not fall, staring blankly at times, sometimes pale, no muscle twitching The attack lasted 2 to 10 seconds, usually less than 30 seconds.