Hashimoto thyroid disease is autoimmune disorder. People, find a Functional medicine doctor in the Functional medicine directory on Google. I have been to one recently after dealing with symptoms for about 20 years. Just did a TON of research in the past weeks and my PC and Endocrinologist refused to do further testing that is needed....TSH is not an accurate test for Thyroid disease! It is a pituitary test!!!!!! I have been on Armour Natural thyroid for 2 weeks and most of my symptoms are already gone!!