Thyroid disease requires lifelong treatment to restore and maintain thyroid function. Three is no permanent cure for thyroid diseases. Hypothyroidism caused by Hashimotos condition can be treated effectively by hormone replacement therapy with levothyroxine. On the other hand, Graves diseases hyperthyroidism requires pharmacotherapy with antithyroid medications to block excess thyroid hormone synthesis. In some cases, surgical removal of the thyroid gland and radioactive iodine treatment is required to treat hyperthyroidism.