That seems to be how it goes for me with my doctors as well where dizziness is concerned. I had to smile that you mention the normal bp while at a check up. Every. Time. For me, as well.

My last pdoc went with dehydration. I want to say I have mentioned it to 3 or 4 doctors. No special testing for me on that note.

I had a good one today from squatting down and standing up. I had to stand still and breath a moment, was at a store. While focusing on not fainting I made a mental note that I need to share some medical info with my sons just in case. Having a gameplan/emergency plan would help.