The past month my three year old son has started hitting himself. When i ask him why hes doing this he replies "I like it". Ive tried telling him that he shouldnt hit himself that hes going to hurt himself, but he dosent care. He is not angry or frustrated when he dose this it just comes out of nowhere. We have also tried ignoing it thinking maybe he was just wanting the attention, but he dose it even if he thinks were not looking.