My son is 18 months old, and matter what we do we just can t get him to stop! He is constantly on the go from the moment he opens his eyes. I have notice lately that he has to constantly be talking or babbling about stuff, he also had random out bursts and starts either smashing his toys or slapping the walls, we can not get him to sit still for more than 5 seconds max, he always has to be on the move, he is aggressive towards his toys and has out burst of tantrums for some times no reason. Also he doesn t realise when he is tired, to get him to go to sleep I have to lay down next to him and hold him there, he screams and screams until his asleep. I know this is not normal and I have been told by many many people that his not your average toddler. What could be causing this?