患者男,15岁。4年前始出现发作性嗜睡,表现极端困倦,迅速入睡,呼之不醒,即使暂醒,对周围漠不关心,迅即入睡。呼喊醒来称饥饿感明显,进食量为平时的2～3倍,且易激惹,无抽搐及尿便失禁。每次发作持续5～7天,每年发作3～4次。内科及神经科体查无异常。发作时脑电图示各导联广泛每秒4～5次之波及每秒3次之δ波,有时呈短阵出现。 Male patient, 15 years old. 4 years ago onset of paroxysmal sleepiness, extreme sleepiness, rapid fall asleep, wake up, even if awake, indifferent to the surrounding, fall asleep immediately. Shouting woke up obviously hunger, eating normally 2 to 3 times, and irritability, no convulsions and urinary incontinence. Each attack lasted 5 to 7 days, 3 to 4 episodes per year. No abnormalities in internal medicine and neurology. Attack of the EEG shows that the leads are widely 4 to 5 times per second, the waves and 3 times per second, δ wave, and sometimes a short array appears.