I like your comparison to BP. I also agree that using your reaction to medication as a way to confirm the ADHD diagnostic lacks validity. But has you've mentioned EEG's, CT scans, self reported surveys, computerized tests, these are also problematic. I think at the moment determining if you have ADHD enough to warrent treatment is very tough to determine. At this point for me... I lived 40 years with my symptoms, suvived and actually did pretty well for myself. The last 2 years some other aspects of my life changed leaving me less able to cope. I am gratiful that I was able to then find someone who would treat me and give me the help I needed to rebalance. I don't know how long I will choose to continue my current treatment. I continually re-evaluate my situation, I foresee a time when I will try and move myself back to managing my symptoms without stimulant medication.