oh, I get it, Gaz.
I *used* to be so smart... I can feel my cranial capacity slipping away even as I type...


the first clue was... everyone around me started seeming brighter.
fair warning... I had a neuro once who clearly didn't appreciate me doing research, and indicated that he felt I was a hypochondriac, and only researching the symptoms so I'd somehow hysterically manifest them.
:sigh:
"Paging Dr. Fraud! White courtesy phone! Pardon me, that's Dr. FREUD, please pick up the nearest courtesy phone."
so, with the next neuro, I played totally *dumb* and simply described the symptoms, without using clinical terminology or medical jargon.
and hey, whaddaya know? I got my Dx !!
third time's a charm, as they always say!