That's quite true. Also bear in mind that nowadays authorities communicate with each other so easily, and information about individuals is shared so easily, as I pointed out a bit earlier in the thread.
However
I don't think a neurologist can declare such a candidate fit
is definitely NOT right. Certainly in the UK ( I can't speak for regimes whose standards are markedly different from ours ) decisions and apparent blots on the record like this one CAN be reversed, if persuasive enough evidence is produced.
Going back to the very first post - do NOT try to do the medical in UK while lying about the EEG ! But DO get in touch with the CAA Med Dept, explain the whole of this history again, and request that the whole thing be reassessed. Would certainly involve seeing a neurology specialist, might include having another EEG carried out. If you can provide the name and address of the neurologist who is not willing to commit pen to paper in your support, they MIGHT even write to him and formally request a report !
Let's face it, in your present position you have nothing to lose, and everything possibly to gain ! Go for it !