I don't know exactly. Long story. My current working theory is that I ingested a food product to which I had a very bad reaction to, but that also suggests there was an underlying predisposition to the effect, which there is, but I can't quite figure out what type of physiologic damage I am dealing with. A lesion? A weak immune system? A compromised immune system? A metabolic imbalance? A brain cyst? I don't know.
My bleeding edge theory is that I have heavy metal poisoning. However, I can't do too many chelaton things all at once, and I plan to request my doctors supervision on a future chelaton therapy. That could make an encephalitis condition happen, and there are advisories out on the food (all natural product) which I first suspected to give me the bad reaction, from a country adjacent to which it is manufactured.