甲状腺功能减退(简称甲减)是甲状腺产生分泌甲状腺素不足,使体内代谢率降低的临床状态。本病根据年龄不同,可有三种临床类型:(1)发病于胎儿及新生儿者称克汀病,(2)发病于发育前儿童称为幼年粘液性水肿,(3)开始于成年期者称为成年粘液性水肿。一般根据典型临床表现即可获诊断。但过去对亚临床型甲减的诊断则甚为困 Hypothyroidism (referred to as hypothyroidism) is thyroid secretion of thyroxine deficiency, so that the body’s metabolic rate decreased clinical status. The disease according to different age, there are three clinical types: (1) the incidence of fetal and neonatal cretinism, (2) the incidence of pre-developmental children known as juvenile myxedema, (3) beginning in adulthood Known as adult myxedema. Generally based on the typical clinical manifestations can be diagnosed. However, in the past the diagnosis of subclinical hypothyroidism is very sleepy