read this NTSB case, amphetamine is disqualifying so is the ADD itself.
http://www.ntsb.gov/legal/o_n_o/docs/Aviation/5381.pdf
If you are currently diagnosed with ADD, and need to get undiagnosed but you have a hard time with the ADD test, download it for your iPad and practice it before going in for the evaluation. Practice makes perfect : )
Really TERRIBLE advice.
If you preload the Wisconsin and the Trails A&B, since the tests are self validating, the psych can tell you preloaded it. Then there are almost no tests left for the visual assessment to ACQUIT youself of the diagnosis, and you are permanently screwed, despite the initial diagnosis by an unqualified social worker that most parents acceeded to by buying the pills.
HIMS program, you're grinding an axe.....Stop spreading misinformation, SUCK up your >>.15 DUI, just suck it up for two years, and stop poisoning this OP unreg's well.
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Now as to: ADD. Both the diagnosis and the meds are DQ-ing. The meds, because the FAA has no control that on the day of the accident, that you took your meds. The diagnosis if actually diagnosed by someone qualified, is DQing as well. The diagnosis is there is your parents acceeded to the diagnosis and started buying the pills.
Now, the unfair part is, there are a lot of UNdiagnosed ADDs out there. if you have it, but have never been diagnosed or medicated, and you can pass an operational check ride, the agency has to regard your ADD as sufficiently mild as to not impair you.
Like the one poster in this string who has it, and got it controlled has discovered, it's a wonderful thing to see the "other side". That's why I ask the young SUI matriculees who discover they cannot get a certificate without at trip to the $$-ive clinical psychologist (to get the diagnosis disabused), "are you actually better with the meds?".