@jamessaxo yes, I'm 59, and you were right about the B12, the problem I had was that I had TOO much via B12 injections, plus, I wasn't watching the B12 I was getting in supplements (more on that further down in this paragraph). My B12 levels were 5x the safe upper limit when I finally had them tested and could have been higher than that, sadly. So, I'm now on the slow recovery phase which could take 6 months to a year. Pins and needles coupled with burning sensations when exposed to heat sources like sunlight, warm temps outside of air conditioned buildings, and the rise in blood pressure from anything like laughter to anger to fright triggers it. But I believe that it's getting better, however slowly. To your point, there is literature everywhere about the lack of B12 and neuropathy, but also misleading information everywhere that says that your system "gets rid of excess B12". This is correct, it does, but first (as you probably know since you are knowledgeable about B12) it's stored in the liver for later use. The lithium orolate worked as a nerve block for me, but losing much of my sense of taste was a bit harrowing.