单词	parasomnia
释义	parasomnia /parəˈsɒmnɪə / noun [mass noun] Medicine A disorder characterized by abnormal or unusual behaviour of the nervous system during sleep: he’s being treated for parasomnia at a sleep disorder clinic... Sleepwalking is a form of parasomnia, a class of sleep disorders characterized by partial wakefulness. Nocturnal head banging, sleep talking and nocturnal leg cramps are other rare forms of parasomnia. Almost 20-40 percent of all normal kids have parasomnia at least once in their lifetimes. Origin 1930s: blend of para-1 and insomnia.
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