Parasomnias include abnormal acts like eating disorders while asleep, nightmares, sleep paralysis and sleep aggression.

睡眠机能紊乱包括了梦游进食、频发恶梦、睡眠麻痹、睡眠躁动等一系列失常症状。

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Drs. Hobson and Silvestri describe parasomnias as "errors in timing and balance" in the brain as it transitions between waking and sleeping [source: Hobson].

Hobson和Silvestri博士将睡眠机能紊乱描述为大脑的“时序和平衡错误”，使大脑在清醒和睡眠状态间不停变换。

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But parasomnias (sleep walking or night terrors); periodic limb movement disorder or restless leg syndrome; and other conditions, such as asthma and eczema, can also affect a child's sleep.

但是异睡症(梦游或者夜惊)，周期性肢体运动障碍或者不安腿综合症，还有其它比如哮喘和湿疹，也会影响孩子的睡眠。

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Sleep studies are sometimes used to diagnose so-called parasomnias such as sleep walking and sleep terrors.

WSJ: More Children With Sleep Problems Seek Overnight Tests

This is largely down to sleep disorders called parasomnias.

BBC: Sleep: Weird things people do in their sleep