Hello Michaelpaul: I also was diagnosed with hashimotos thyroiditis, and have high markers also, even though I take levothyroxine daily (AM, empty stomach, AT LEAST one hour before eating). My current endocrinologist is not very interested in thyroid disease, so I get my TSH and panel tests done yearly through an independent lab. My dose always needs to be changed. I have also have low blood pressure, and years ago had syncopal episodes during intense aerobic exercise. They tested my heart health, and found nothing wrong. No one has asked me about IVIG therapy. I have other health conditions that may or may not be (according to the medical literature) linked to autoimmune causes, including idiopathic anaphylaxis; polycystic ovarian syndrome; and porokeratosis (skin disorder). I have a blood marker for lupus, but not enough symptoms to be diagnosed with lupus.

Please keep us posted if you try the IVIG therapy, or if your endocrinologist sheds some light on treatment options. I hope your peripheral pain and numbness have been addressed and treated. I also have a peripheral pain issue in one leg, but XRAYS showed nothing wrong. I suspect it is some sort of neuropathy, as of yet undiagnosed. While it does not keep me from exercising daily, it sometimes interferes with sleep.