All I can tell you is that our son with ADHD was a TREMENDOUS handful during his school years... especially during high school..
Today, he is 24 years old and a third year medical school student. He is aware that he needs his Ritalin and takes it regularly. He is actually a pleasure to talk to now. There is no more constant arguing. We now have pleasant conversations. I never dreamed that we would have the loving, peaceful relationship that we now have. Don't give up. I know that is easier said than done. There is hope.