Night terrors are very different from nightmares and these are common among children aged between three and eight.
Night terrors are characterised by screaming, trashing and not recognising those comforting them, and they occur on waking abruptly from deep, non-dream sleep.
Nightmares, on the other hand, occur from dream sleep (REM sleep).
Children and adults have nightmares and can normally remember them when they wake up, unlike night terrors.