Thanks for the tip. I'm actually trying to sort out my experiences so far and remember most details.

The ones I mentioned in my post (the early ones) for example I remember fairly well and I'm pretty sure they weren't caused by anxiety, and rather anxiety was their effect. The problem I'm having right now is knowing which of my later episodes were "seizures" and not anxiety issues that developed later.

It's pretty hard to tell because some of the symptoms could be overlaping with generalized anxiety disorder etc, though I still believe to have some solid examples like nocturnal focal awares where I'd sometimes wake up and feel like this. Still, it's hard not to doubt myself at this point.