患儿，男，8岁。因左侧肢体抽动反复发作4个月入院。患儿4个月前白天出现左侧肢体抽动，先左上肢继而左下肢抽动，约数十秒钟至1分钟自行缓解。于精神紧张、惊吓后诱发，发病前有预感。发作时神志清，伴有面部怪相及喉部“咕咕”声，频繁发作后感肢体乏力。患儿发病前无发热感? Children, male, 8 years old. Due to repeated episodes of left limb twitching 4 months admitted to hospital. 4 months ago, children with left limb twitch during the daytime, then left upper limb and left leg twitch, about a few seconds to 1 minute self-remission. In stress, frightened after induction, before the onset of a premonition. Sense of delirium, accompanied by strange facial and throat “cuckoo” sound, frequent episodes of post-limb fatigue. Pre-onset children without fever?