Thyroiditis should be diagnosed comprehensively by thyroid function measurement, thyroid ultrasound, thyroid antibody measurement and other tests, combined with the patient’s physical examination. 1. Thyroid function measurement: The function of the thyroid gland is determined by measuring the level of hormones such as thyrotropin and thyroid hormone in the blood. 2. Thyroid ultrasound: It can show the presence of nodules and changes in blood flow in the thyroid gland, as well as the presence of diffuse lesions. 3. Thyroid antibody assay: It can measure the level of thyroid peroxidase antibody and thyroglobulin antibody, which are significantly elevated, suggesting immune thyroiditis. 4. Most cases of thyroiditis are associated with an enlarged thyroid gland. Pain when touching the thyroid gland is often indicative of subacute thyroiditis. This type of disease occurs more often in women. If you suspect thyroiditis, you should go to the hospital in time, complete the relevant examinations, and have a professional doctor make a diagnosis.