Hi I had my thyroid removed due to cancer in 2002. I have had pain in my muscles and joints since. My back always feels tired and beaten. I could hardly get up from a sitting position. I went to the doctor and he gave me a inflammation med and a muscle relaxer to help. Not all meds help. I had to work with my doctor to find what did. I think anything to do with your thyroid can cause your body to react with pain. Hope things get better. Ask your doctor about Lodine and Skelaxin. That is one combination that has helped me.