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

Also known as night terrors, sleep terrors usually affect children between the ages of about 4 to 12. Some adults may have them too. An episode usually lasts a few minutes but may last up to 30 ...

Although adults can experience them, young children are more likely to have night terrors. Around 14% of kids in the United ...