Subacute thyroiditis is a self-limiting form of thyroiditis associated with viral infection that is curable in the vast majority of cases and usually leaves no hypothyroidism. Only non-steroidal anti-inflammatory drugs (NSAIDs), such as aspirin and ibuprofen, are needed for mild subacute thyroiditis, while prednisone may be given to relieve thyroid pain in moderate to severe cases. Propranolol may be given for thyrotoxic manifestations; levothyroxine replacement may be appropriate for transient hypothyroidism. The diagnosis of subacute thyroiditis can be confirmed by elevated serum thyroid hormone concentrations and a significantly lower than normal thyroid iodine uptake rate in both directions. Patients with subacute thyroiditis need to go to the endocrinology department of a regular hospital for consultation and standardized treatment under the guidance of a professional physician, so as not to delay the condition.