Hyperthyroidism, or hyperthyroidism for short, is a clinical syndrome caused by increased thyroid function and excessive secretion of thyroid hormones, which in turn causes increased excitability and hyper-metabolism in the nervous, circulatory and digestive systems. Most hyperthyroidism is slow in onset, but there are also acute onset cases. The etiology and pathogenesis of this disease have not yet been fully elucidated. There are two theories: ① The theory of excessive secretion of thyroid hormone by the pituitary gland, which suggests that the disease is caused by excessive secretion of thyroid hormone by the pituitary gland. The fact that hyperthyroidism can still occur even after removal of the pituitary gland disproves this traditional theory. The immunological theory is that hyperthyroidism is an autoimmune disease. Recent studies have proved that the disease is induced by stress factors such as infection and trauma on the basis of genetic predisposition and is an organ-specific autoimmune disease caused by defective function of suppressive T lymphocytes. Typical clinical manifestations include two major symptom clusters: increased metabolism and neuroexcitation caused by excess thyroxine. 1. Increased metabolic rate. The symptoms include increased appetite, weight loss, increased heart rate, fatigue, fear of heat and cold, warm skin, dampness and sweating, chest tightness and shortness of breath, diarrhea and loose stools. 2. Nervous excitement. Often manifested as nervousness, nervousness, impatience, easily excited, insomnia and dreaminess. In severe cases, mental disorders such as melancholy and mania may appear. Laboratory tests: TT4, TT3, FT4, FT3, sTSH, TPO, TGAb In hyperthyroidism, TT4 and FT4 are increased or normal, TT3 and FT3 are increased and sTSH is significantly lower. TPO and TGAb determine the nature of the thyroid gland and the choice of treatment plan and the effect of drug therapy, etc. Treatment Suggestions The above symptoms should be found in time to go to the hospital. There are three ways to treat hyperthyroidism in western medicine: medication, surgical excision and nuclear medicine treatment. The main treatment method is to take anti-thyroid drugs. However, anti-thyroid drugs must be chosen under the guidance of a doctor and regular check-ups should be conducted at the hospital according to the doctor’s requirements in order to determine and adjust the dosage of the drugs. Surgical treatment and nuclear therapy should be decided by the doctor according to the actual condition of the patient.