I'm worried about my 18 month old son as when he takes a tantrum it is not normal anymore. He will go find a cupboard door or hard floor and bash his head on it several times so hard until he cries, this happens when he does not get his own way or like what we have done. Also he loves to really bite me and finds it funny when I yelp out in pain. I have tried to ignore it and also tried to get him to stop these things but it just seems to get worse. Also he has this strange obsession to knocking the juice bottles down everytime he walks past them plus my daughters wellies. I really don't know what to do anymore. Any advice would help thanks x