sleep disorder

English Thesaurus

1. a disturbance of the normal sleep pattern (noun.state)

hypernym	:	disorder, upset,
definition	:	a physical condition in which there is a disturbance of normal functioning (noun.state)

hyponym	:	hypersomnia,
definition	:	an inability to stay awake (noun.state)

hyponym	:	insomnia,
definition	:	an inability to sleep; chronic sleeplessness (noun.state)

hyponym	:	pavor nocturnus, sleep terror disorder,
definition	:	a disorder of sleep characterized by a dream of terrifying dimensions far worse than a typical nightmare; they occur during NREM sleep (noun.state)

hyponym	:	sleep apnea,
definition	:	apnea that occurs during sleep (noun.state)