There is SOMETHING that triggers night terrors. It could be the smallest thing. My oldest daughter, something jumping out at her would trigger a night terror. My son would hear squirrels on the roof and have them. My two year old has yet to have a night terror. if your child is having them, find out what s scaring them. Pay close attention to books, cartoons, noises at bed time, shapes made from shadows from a night light. Or just what a toy or something looks like in the dark. It is probably something you wouldn't think about, but to their little mind, it is something scary.