[DannyBee]

(As others pointed out, Adderall is basically meth) First, there are non-stimulants. For example, Straterra is one, and it works great for me. So if your complaint is amphetamine, problem solved! The truth is we are pretty much still in the "using leechs to let blood" phase of being able to target drugs to brain chemistry. We know there is stuff firing wrong/activating wrong. We have theories why that is the case. But thoes theories are pretty basic, and we lack the capability to build drugs that affect the changes we want.

So, instead, we find existing drugs that help cope with symptoms.

As for the EEG part: you,in fact, can start to do that (using EEGs and qEEGs). See NEBA, etc.

"Conclusively" is hard, of course. You often can't conclusively establish someone has a brain tumor from an EEG, and those often have huge impact on the brain.