If the patient has no energy and wants to sleep frequently, it is recommended to exclude hypothyroidism, which is a decrease in circulating thyroid hormones. It can cause weakness, lack of energy, drowsiness, memory loss, and constipation. In severe cases, edema, swelling of the hands and feet, low sweating, and joint pain may occur. Women may also experience menstrual disorders and infertility. It is recommended to check the thyroid function. Hypothyroidism will result in increased serum TSH and decreased TT4 and FT4. If hypothyroidism occurs, it is recommended to further check thyroid peroxidase antibodies and thyroglobulin antibodies to determine if the cause of hypothyroidism is caused by thyroiditis.