My 5 year old as started suffering with really bad night terrors, and for the past 3 nights has been waking up on average about 10 times a night! When he wakes up he starts crying, but when we go in to him he starts screaming hysterically and cowering to the corner of his bed and puts his arms over his head as if he's trying to protect himself

It takes us ages to calm him down, and when we ask him about it in the morning he cant remember doing it!!
I dont know what to do! My friend says he'll just grow out of it, but it's horrible seeing/hearing him like that!
If anyone has any advice I'll be grateful! x