First off I just want to say that I am so happy that I found this forum, alot of the info is really helpful. My son was diagnosed two months ago with mild ADHD, he also was seen by the school IEP and they said he has Autism Spectrum Disorder because of his sensory issues. We went thru several meds for him and now he's on Clonidine and Rispidol. His first day of Pk went fantastic the teacher sent a note home for me and said he was really good at listening and redirect very easily. I have noticed a huge difference in his behavior also. He actually apoligize yeasterday for knocking a toy box over when we were playing, that is something he never would have done. Well I just wanted to give some insight on a four year old problem with this. Hope it can help someone