Why do sleeping kids at night suddenly start crying and shouting? No matter how hard you keep calling her or shake her, she still closes her eye like still sleeping and keeps on crying and shouting .....

my son 10 he have this problem too. He have play too much or have see some ghost stories movie, he will be dreaming when he is awake. start cry and talking to me but after he awake he will forget what he do just now. i have no more give him see scary movie and playing too much. now this problem stop about 6month.