[jessaustin]

...the underlying anatomy and biochemistry of ADHD has not been definitively characterized...

That's an understatement. The same could be said of any "disorder" or "syndrome" the study of which is motivated primarily by commerce in pharmaceuticals. If humanity survives long enough, future medicine will see "ADHD" as lying mostly within normal human psychological variety. Our clumsy efforts at treatment will be seen as prescribing 6" shoe risers to everyone, whether they're 5'1" or 6'3".

[Houshalter]

That sounds sort of dismissive to people who have ADHD. It is a real condition with real effects on people's lives, who get very real benefits from medication. It is not like prescribing 6" shoes to everyone. Of course the type of medication and dosage is adjusted to the patient.