regarding your thyroid ... especially for any auto-immune hypo-thyroid issues.
If you check out thyroid specialty boards, you will find many folks there who suffer from PN, and especially around menopause.
I do know that my own thyroid tested 'normal' until they did the immune thyroid tests.. The thyroid got attacked after my peripheral nerves did by about 5 months... and all the while basic TSH tests after the first attack [and thy. meds adjusted] always read normal. But that thyroid wasn't just dying? it was DEAD! Treatments usually don't change a lot other than adding an immune issue to the menu. BUT things can get complicated in the future and it is good to know about and have in your records.
It only took me four years to get the tests for this? And it happened only because other immune issues cropped up.
I used to be VERY active before all this too! I miss that all dearly. Even trips to some docs are outside of my comfort zone these days. But, I keep going and keep trying! Just keep moving the best you can however you can and keep faith that we all get by in this all! Hugs and hope! - j 's