Symptoms such as rapid heartbeat, heavy food intake, heavy sweating, and sleepiness are likely to be manifestations of hyperthyroidism, and require a visit to the hospital for a thyroid function test and treatment with medication, radiation, or surgery. Patients with hyperthyroidism often have tachycardia, hyperphagia, excessive sweating, fatigue, weight loss, and agitation. It may also be accompanied by bulging eyes, periodic paralysis or muscle weakness, and dizziness and headaches. Thyroid function tests, including thyroid stimulating hormone (TSH), total thyroid hormone (TT4), free thyroxine (FT4), etc., and imaging tests of the thyroid gland can be performed if necessary. Medications such as imidazole and propylthiouracil can be used, in addition to surgery and radiotherapy. The use of medication should be under the guidance of a doctor and should not be used without authorization.