The following signs can help patients to detect subacute thyroiditis: 1. 1 – 3 weeks before the onset of the disease, there are often cold symptoms, such as chills, weakness, general discomfort, sore throat, etc. 2. 2. Pain in the neck and a lump is felt in the thyroid area of the neck. The mass is hard in texture and has obvious tenderness. 3.Fever, mostly moderate fever (38-39~C), a few are high fever (39~C or more). 4. Fear of heat, excessive sweating, panic, hyperphagia. The above conditions should be thought of when they occur. When the above occurs, you should think about whether you are suffering from subacute thyroiditis, and should promptly go to the hospital internal medicine department for consultation and treatment, and it is best to seek endocrine specialist consultation if available. If hospital laboratory tests reveal a significant increase in blood flow, a low or decreasing total white blood cell count, an increase in serum TT3, TT4, FT3, FT4, and a significant decrease in thyroid iodine uptake, then it is clear that the patient is suffering from subacute thyroiditis.