Lab Testing and Hashimoto Thyroiditis

The most common cause of thyroiditis (thyroid gland inflammation) is Hashimoto thyroiditis. In the US, it is also the most common cause of hypothyroidism (underactive thyroid). An autoimmune disorder is what causes Hashimoto thyroiditis.   The thyroid is a small butterfly-shaped gland that lies flat on the base of the throat against the windpipe. It produces