A comparison of parasomnias that occur on arousal from NREM sleep

Clinical feature	Confusional arousal	Sleep terror	Sleepwalking
Age of onset	2 to 10 years	2 to 10 years	5 to 10 years
Frequency	3 to 4 per week to 1 to 2 per month	3 to 4 per week to 1 to 2 per month	3 to 4 per week to 1 to 2 per month
Peak time of occurrence	First one-third of night sleep	First one-third of night sleep	First one-third of night sleep
Behavior during event	Whimpering, some articulation, sitting up in bed, inconsolable	Screaming, agitation, flushed face, sweating, inconsolable	Walking around the room or house, may be quiet or agitated, unresponsive to verbal commands
Electroencephalogram findings during event	Slow-wave sleep, with rhythmic theta or delta activity	Slow-wave sleep, with rhythmic theta or delta activity	Slow-wave sleep, with rhythmic theta or delta activity
Duration	10 to 30 minutes	10 to 20 minutes	10 to 20 minutes

NREM: non-rapid eye movement.

Graphic 81349 Version 7.0