近年来发现甲状腺激素异常不但见于甲状腺疾病,亦见于许多慢性疾病及感染性疾病。若甲状腺激素异常临床元甲状腺疾病表现,且促甲状腺激素系统尚未受到影响(TSH正常),有学者将其称之为正常甲状腺功能病态综合征(Euthyriod SickSyndrome,ESS)。临床有四种类型表现,即低T_3综合征、低T_4综合征、低T_3、T_4综合征、高T_4综合征。一、甲状腺激素代谢及生理功能研究近况 In recent years, thyroid hormone abnormalities not only found in thyroid disease, also found in many chronic diseases and infectious diseases. If thyroid hormone abnormal clinical thyroid disease performance, and the thyroid-stimulating hormone system has not been affected (TSH normal), some scholars call it the normal thyroid function sick syndrome (Euthyriod SickSyndrome, ESS). There are four clinical manifestations, namely low T 3 syndrome, low T 4 syndrome, low T 3, T 4 syndrome, high T 4 syndrome. First, the status of thyroid hormone metabolism and physiological function