Thyroid pain can be seen in subacute thyroiditis, intracapsular hemorrhage of thyroid nodules and advanced thyroid cancer. 1. Subacute thyroiditis: Subacute thyroiditis is often caused by viral infections, which can cause mild or moderate pain in the thyroid gland, often accompanied by a history of upper respiratory tract infections and an enlarged thyroid gland. 2. Intracapsular hemorrhage of thyroid nodules: Intracapsular hemorrhage may occur in cystic nodules of large diameter, which may lead to sudden pain in the thyroid gland and rapid enlargement of the thyroid gland in a short period of time. 3. Advanced thyroid cancer: advanced thyroid cancer may have enlarged lymph nodes in the neck and may invade the surrounding tissues and nerves, which may cause pain. If thyroid pain occurs, it is recommended to consult a doctor as soon as possible for clear diagnosis.