My son was diagnosed with ADHD, a while back. He is on meds, but some days you can not even tell. Is there anyone here in this situation? It just seems like my son is a firecracker, and can never slow down. He also has a problem knowing how to lower his voice. No matter how many times we tell him he is screaming instead of talking, he never quietens down. He has had numerous hearing tests, so it is not his hearing.