It sounds like you have two VERY different opinions regarding your son. Do the retesting when you can. If you can get services that work for your son, the diagnosis aren't as important. Just because one professional says it's "bunk" does not mean it is. That is one professionals opinion and it is only an opinion unless THEY can PROVE the results are incorrect. Don't fret it. Take the services you can get and ask for more if needed. After all, it IS all about the services not necessarily the labels.
I hate to say this Otto but she is 18 and there is nothing you can do except provide information and support. If she would be willing to do what Buddy said, great. Have you tried to explain that what the dev. pediatrician. said is an "opinion"? Why is she SOOOO convinced (obsessively so) that it's ADD/ADHD and why does she specifically want Aderrall? If you could get someone else to tell her the "truth" about the various diagnosis's they might be more believable because they aren't MOM. I don't know, it sounds like a tough call but it al boils down to her being a legal adult and there's not much you can do.
{{{{(((HUGS)))}}}} to you all. It sounds so tough. Having done the anxiety/depression thing personally, she is in a very tough spot.
