Hi my son is 3 yrs old will be 4 in july. He was always alittle hyper,and he is always happy. The past few months just have been getting worse with his behavior. He is always running around and doesnt listen when myself or his father tell him to stop running and to sit. He throws temper tantrums when we tell him to stop or if we put him in time out. We've tried everything, taking his favorite toys away when he doesnt listen, not letting him watch his favorite shows and nothing works. I also have an 11 month old who he sometimes knocks over for no reason. I'm not sure if i should take him to his dr or not. Any help or advice would be greatly appreciated!