Thanks for the responses. A very stressful time. Great to find this forum to help search for answers.

My B12 is 350 with a standard range listed as 239 - 931 pg/ml.
I did not get tested for Vit D. I can mention this. Does a Vit D deficiency cause some of this as well?

The only drug I'd started taking a couple of weeks before this started was Claritin. I normally only take it occasionaly, but this year I had started taking it on a daily basis. I have looked up the possible side effects, but didn't see anything.

I've had quite a bit "less" excercise lately. Especially since this all started.

Again, thanks for the responses.