I'm sure you've read this by now, but in case you haven't.
Ask your doctor what the biological differences are between ADD/ non add sufferers, when she gives you the BS about brain chemistry (which she will ) ask her how ahe got any idea of YOUR brain chemistry by asking you a whole bunch of questions. I think you'll be very intrigued by the answers. She'll probably just stutter a lot in response to the 2nd question. ADD/ADHD is a myth, there is NO medical test to diagnose it and it is treated as a disease in large part due to the huge financial influence wielded by the pharmaceutical industry in this country.