Hyperthyroidism may recur. Hyperthyroidism, also known as hyperthyroidism, is a very common clinical endocrine disease. The causes of hyperthyroidism mainly include diffuse toxic goiter, subacute thyroiditis, Hashimoto’s thyroiditis and drug factors. Patients may have clinical manifestations such as panic, fear of heat, excessive sweating, hyperphagia, emaciation, and weight loss. For the vast majority of hyperthyroidism patients, hyperthyroidism can be controlled with standardized treatment, healthy life and proper exercise. Some patients will relapse, and the most common reasons for relapse are insufficient dosage of medication and insufficient course of treatment. After the recurrence of hyperthyroidism, a second drug treatment can be carried out, and the available drugs include propylthiouracil, methimazole and so on. Iodine 131 treatment can also be used, which utilizes radioactive iodine to destroy the thyroid gland in order to reduce the patient’s thyroid function. Thyroid surgery can also be used. It is recommended that patients with hyperthyroidism take the medication as prescribed by the doctor and do not stop or adjust the medication on their own. Do not stop or adjust the medication on your own. Follow the doctor’s instructions for regular checkups during the treatment. If discomfort occurs during the medication, please consult a doctor promptly.