Hypothyroidism is caused by a decrease in the synthesis and secretion of thyroxine, which affects the body’s metabolism. When symptoms of hypothyroidism occur, the first step is to check thyroid function and have an ultrasound of the thyroid gland. If there is a significant decrease in thyroid hormone, you can choose thyroid hormone drugs for treatment. Moreover, during the drug treatment, you need to review thyroid hormone regularly and adjust the drug according to the review result, which is helpful to maintain the stable condition.