Thyroiditis is not a disease, but rather a large group of sexual disorders that refers to inflammation of the thyroid gland, and there are various clinical classifications. Most thyroid infections have similar symptoms, have an insidious onset, have no specific symptoms in the early stages, and are difficult to detect; some patients even remain undetected, called asymptomatic thyroiditis. Patients who are detected usually go through a process of conversion from hyperthyroidism to hypothyroidism, in addition to the painful enlargement caused by the inflammation of the thyroid gland itself. Because the inflammation destroys the thyroid follicles, stored thyroid hormones leak into the circulation and symptoms of hyperthyroidism appear, but because the destroyed follicles are unable to continue to secrete, they again become hypothyroid due to insufficient thyroid hormones. In some types of thyroiditis follicular function can be restored, but in others it becomes lifelong hypothyroidism. In the case of, acute septic thyroiditis, the symptoms are obvious and detected early, and it is a rare or rare inflammatory thyroid condition. It is seen mainly in children, mostly due to abnormal development of the thyroid gland or in conjunction with other abnormalities of the neck, followed by a secondary bacterial infection, such as abnormal development of the parotid gland. It may have an acute onset with high fever and blood work consistent with septic inflammatory changes, but thyroid function is generally normal. Local manifestations are a painful mass on one side of the thyroid gland found on palpation, its skin appearance is congested and red, and the pressure pain is intense and high tension. Therefore, thyroiditis is a large group of diseases caused by multiple etiologies, and most types have an insidious onset and are difficult to detect early.