Night terrors tend to happen in a sleep stage known as deep sleep, rather than when in REM, which is when nightmares happen.

Night terrors are a type of parasomnia—a group of sleep disorders that cause you to wake up abruptly in the middle of the ...

What are night terrors? Created with Sketch. The phrase “night terrors” refers to a kind of sleep disturbance in which an individual screams, cries, or otherwise appears consumed by intense ...