Abstract:Thyroiditis includes acute suppurative thyroiditis (a rare disease), subacute thyroiditis (5% of patients with thyroid disease) and chronic lymphocytic thyroiditis (prevalence of 10%-12%), the incidence of which increased with aging and in female gender. Major pathogeneses of thyroiditis include infection with bacteria or virus and autoimmune dysfunction. Excessive iodine intake could increase thyroiditis incidence. The major treatments for thyroiditis include lifestyle changes, appropriate iodine intake from food, and immunoregulation for inflammation suppression. Acute inflammation process could be controlled; however, it is prone to recurrence and occurrence of hypothyroidism after treatment.