Low free thyroid hormone may be caused by hypothyroidism and hypothyroidism, that is, too little thyroid hormone in the blood circulation. The common symptoms of hypothyroidism patients include chills, fatigue, swelling of hands and feet, lethargy, memory loss, facial edema, weight gain, etc. In case of hypothyroidism generally, patients should take levothyroxine orally for replacement treatment, which generally requires lifelong medication. Therefore, once the above symptoms occur, the thyroid function must be checked. If the patient's thyroid hormone is low, he or she should take levothyroxine in time for replacement treatment. Also, it should be noted that during the medication period, the thyroid hormone level must be checked regularly. Generally, it is checked once a month, and the drug dose should be adjusted. After stabilization, patients should also check the thyroid hormone level every six months to one year.
