Jisho

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Noun
1. sleep disorder
Wikipedia definition
2. Sleep disorderA sleep disorder, or somnipathy, is a medical disorder of the sleep patterns of a person or animal. Some sleep disorders are serious enough to interfere with normal physical, mental and emotional functioning. Polysomnography is a test commonly ordered for some sleep disorders. Disruptions in sleep can be caused by a variety of issues, from teeth grinding to night terrors. When a person suffers from difficulty in sleeping with no obvious cause, it is referred to as insomnia.
Read “Sleep disorder” on English Wikipedia
Read “睡眠障害” on Japanese Wikipedia
Read “Sleep disorder” on DBpedia

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