I believe you guys are spot on.

I had similar issues in 2012, neuropathic that is. At that time it was my unstable thyroid. I had fasciculations going on and burning in legs. I was younger then and just moved on. I can't recall it anymore but after a while it just went away. I still had flares with my thyroid but it was clinically OK the endo's said.
Now, at the end, in 2018 my BFS Stuff is back and had some high period. But mostly, on let's say aboutbfs.com I've spoken with a lot of people. They just continue to live on. In most scenario's it flats out after a year or something.