sleep_disorder (HyperDic hyper-dictionary)

English > 1 sense of the expression *sleep disorder*:
NOUN	state	sleep disorder	a disturbance of the normal sleep pattern

English > *sleep disorder*: 1 sense > noun 1, state
Meaning	A disturbance of the normal sleep pattern.
Narrower	hypersomnia	An inability to stay awake
	insomnia	An inability to sleep
	sleep apnea	apnea that occurs during sleep
	sleep terror disorder, pavor nocturnus	A disorder of sleep characterized by a dream of terrifying dimensions far worse than a typical nightmare
Broader	disorder, upset	A physical condition in which there is a disturbance of normal / normal functioning

HyperDic: sleep_disorder