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 ...

“A child having a nightmare will typically wake up, remember the dream, and seek comfort. With night terrors, however, the child usually has no memory of the event in the morning.” But even if ...