They are called
night terrors. You could be out for dinner with your spouse. You
could be enjoying yourself and get a call from the babysitter that your child
is screaming uncontrollably, or you could be home and just hear your child
start yelling. You go up to see them and their eyes are looking straight
at you. They're screaming in terror and you cannot rouse them. That is
usually the sign of a night terror. In fact, what will happen is the
child will not remember it the next day. Night terrors occur; they're
common, and they need to basically be put in a situation where the child
relaxes.