To determine the recovery of subacute thyroiditis, you can look at the clinical manifestations and relevant examinations, if the symptoms disappear and the examination shows that the indicators are normal, it usually means that the disease is cured. Subacute thyroiditis is caused by a viral infection and can present with enlarged and painful thyroid gland, fever, and symptoms of hyperthyroidism such as fatigue and palpitations in the early stages, followed by symptoms of hypothyroidism such as weight gain and bradycardia. To determine whether subacute thyroiditis is cured, you need to start from the clinical manifestations, laboratory tests and other aspects. If the clinical symptoms of subacute thyroiditis disappear, and tests show that T3, T4, TSH, and iodine 131 uptake have returned to normal levels, the disease may be cured. If you are not sure whether the disease is cured or not, you can go to the hospital and ask the doctor to make a judgment.