Not sure if I am over reacting. Not sure where to go for help anyway. DS is a loving, affectionate boy. However, sporadically he has immense rages. He had one last night. He hit his 2 year old sister, kicked me in the face (hard enough for my nose to still hurt today), i shut him in his room as dd2 was crying with fear. I then heard his window open and he was stood on the window ledge saying he was going to jump out. I dragged him back in. He then repeatedly smashed a toy builders hat against the wall. He calmed eventually but then said that it wasnt his fault that he had hit me and his sister, it had been the voices in my (not his) head that had told him to do it. DH thinks I am overreacting, but I am scared I am ignoring a problem because I dont want to admit there is something wrong. He is fine at school. When I mentioned his aggression some time ago to his teacher she was surprised. But he does lash out at friends and us when he feels frustrated. What are the parameters of normal behaviour? Any advice?