I believe you are in the right place, many SFN people here plus many other acronyms enough to fill a book. I hope that your blood tests will give you something to work on. I remember the anxiety to find a correct DX(diagnosis)
and matching symptoms. That may be problematic as this affliction is as diverse as people. Whether from toxicity or any myriad of causes, when you go to the Neuro try to be together mentally with notes that keep you focused on brief history and principal symptoms. I write this as a precautionary statement because if you go in and panic in front of the Dr., you risk being funneld into Hypochondriac or unstable category. Study here and use search function, the folks here dispense much better info than U-Tube as I have read conflicting stuff there. Nutrician, excersize, sleep and finding out if there is an underlying cause will all help. Try not to let worry rule as you go forward, lots of folks walking the same road. Good Luck, Ken in Texas