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患儿,男,6岁,因反复间断发作突然全身无力、站立不稳、摔倒3年,于1996年11月人院。患儿足月顺产,生后无窒息。2岁时发现颈部有3、4个小米粒大小与皮肤色相似软疣,3岁时无明显诱因突然全身无力、站立不稳而摔倒,伴有双手震颤,神志清醒,不语,持续4、5分钟后即嗜睡。发?
Children, male, 6 years old, due to repeated intermittent episodes of sudden general weakness, standing firm, fell 3 years, in November 1996 hospital. Children with full-term follow-up, no suffocation after birth. 2 years old found that the neck has 3,4 millet grain size and skin color similar to soft warts, 3-year-old no obvious cause of sudden general weakness, standing instability and fall, accompanied by tremor, conscious, silent, sustained 4,5 minutes after sleepiness. hair?