You know aggie, I didn't really BELIEVE both doctors that hypothyroid was the cause of my pn. I just couldn't find enough to support it completely, so in my mind I felt maybe the fact that my blood sugar numbers were spiking so high (before my low carb diet) that the spikes caused my pn. Personally, going on my own, I decided to buy the meter and go low carb.
However, as time has gone on I have changed my opinion and do believe thyroid could have caused it. Before I got on thyroid meds, my heels hurt all the time and felt like a spike was in them, I had swelling all around my heels. Once I got on the meds that all went away and so did my PN symptoms, all of them. THEN after being on meds a bit the burning came back and has gotten worse and worse. Then it got better again when I increased thyroid meds, only to return a few weeks later.
While I wont ever really know the true cause, and it could be spikes in blood gluclose, or even my hydroclorothyiazide, I do believe it is the thyroid and now with hashi in the picture, that suggests inflamation even more.
Inflamation is a problem I already knew I had but I didn't know it was/could be from hashi's. And my burning improved instantly when I started with zyflamend for inflamation.
So, my new goal is to work on inflamation, bring my TPO antibodies down and see it that helps my burning/pn.
Just thought I would share my story with you in case it gives you any insight into your own situation.
Edit to add: I added selenium this week also, and I see you take it, so maybe that will help too. What kind do you take??? I have been confused on the many different kinds of selenium and some have yeast which is not good for candida.