Patients with thyroiditis should choose a treatment plan based on their condition. If subacute thyroiditis can make anti-inflammatory pain medication, such as aspirin. Autoimmune thyroiditis is treated according to the thyroid function. If there is hypothyroidism, levothyroxine can be taken, and if there is hyperthyroidism, methimazole can be used. Subacute thyroiditis is a localized inflammation of the thyroid gland associated with a viral infection. Typical clinical manifestations are fever, neck pain, which may be accompanied by symptoms of hyperthyroidism or hypothyroidism, and anti-inflammatory and pain relieving medications, such as aspirin, may be used, and hormone therapy may be used when the condition is severe. Autoimmune thyroiditis, such as Hashimoto’s thyroiditis, can be treated with levothyroxine replacement therapy when hypothyroidism develops later. If Graves’ disease, hyperthyroidism is present, it can be treated with antithyroid drugs. Patients with thyroiditis should be treated under medical supervision.