Thanks for your answer. I see that in the "Autoimmune Diseases" forum, I can post questions about, as mentioned, "Hashimoto’s thyroiditis (underactive thyroid)" and "Graves’ disease (overactive thyroid)". Can I still post there if my hypothyroid problem is not Hashimoto's? I read on several web sites information about thyroid problems, information mentioning that there are several types of underactive thyroid (hypothyroidism) problems. Mine could or could not be Hashimoto's or, in other words, my hypothyroidism could be a non-autoimmune disorder, but a disorder caused by something else (I suspect RSD spreading to my thyroid, but I could be wrong). However, I will try posting my questions there to see if I get answers. Thanks for letting me know anout this thread and for posting the link to it so I can find it more easily.