my son has always been highly strung, he was very sick as a baby with broncilitis he had to be ventilated for a week and his oxygen levels did go as low as 62% so i worry it may have effected him, he has been refered for delayed speech, He is very loving sometimes but i feel im always walking on egg shells around him, he has 2 big sisters that he hurts quite often, when we go out anyware he has very bad tantrums and runs off, its so hard to control him and the 2 gilrs end up following me while i chase after their brother :( any advice or help please?? we reallly cant go anywhere with our son without him getting real angry and having bad behaviour is this normal?