Hashimoto's thyroiditis (chronic autoimmune thyroiditis). High serum antibodies are found in active phase chronic autoimmune thyroiditis. Usually it is hypothyroidism, specifically Hashimoto's thyroiditis. This milder form of hypothyroidism is most commonly caused by Hashimoto's thyroiditis. Thyroiditis and other thyroid diseases also predispose to thyroid cancer. Hashimoto's thyroiditis is typically treated with levothyroxine. Indirect evidence has implicated viral infection in the etiology of subacute thyroiditis. Myxedema can also occur in Hashimoto thyroiditis and other long-standing forms of hypothyroidism. Abnormal results may be caused by disorders such as Graves' disease or Hashimoto's thyroiditis. There are many symptoms that are attributed to Hashimoto's thyroiditis or Hashimoto's disease. Morgan was later diagnosed with Hashimoto's thyroiditis. ATAs are often found in patients with Hashimoto's thyroiditis or Graves' disease. The incidence of gastric carcinoids is increased in achlorhydria, Hashimoto's thyroiditis, and pernicious anemia. This antibody is related to Hashimoto's thyroiditis and Graves' disease. It occasionally occurs in non-thyrotoxic Graves' disease, Hashimoto's thyroiditis, and stasis dermatitis.