Whether or not treatment is needed depends on the cause of the thyroid function abnormality, such as primary hyperthyroidism or primary hypothyroidism still need medication, and subacute thyroiditis is generally not needed. Primary hyperthyroidism can cause thyroid function abnormalities, thyrotropin decrease with thyroid hormone increase, etc. After three months of treatment, the indexes will return to normal, but still need to continue to use medication, and primary hyperthyroidism can not be less than one year of treatment cycle, otherwise it will be easy to relapse after stopping the drug. Primary hypothyroidism can also cause thyroid function abnormalities, generally need to take levothyroxine sodium tablets for life as a replacement therapy, can not stop the drug. Subacute thyroiditis is a self-limiting disease, during the onset of thyroid function abnormalities, three months after the index recovery indicates that the disease is in recovery, generally do not need to continue treatment. If your thyroid function is abnormal for three months and then returns to normal, you are advised to go to the hospital and ask your doctor to determine if you need to continue treatment.