I’m sorry for the response delay, in the case of ADHD the test treatment is simple. Give the person a relatively high dose shot of espresso and test behavior for calm coherence. If coherence increases under the influence of a powerful stimulant (caffeine is a powerful neurotoxin) then ADHD is a distinct possibility and more testing should follow. In most cases of ND I’m aware of though, treatment comes with serious implications, and should not be taken without diagnosis. Most people self medicate to varying degrees with some effectiveness, and all people are somewhere on the ND spectrum.