原发性甲状腺功能减退症(甲减),起病隐蔽又缺乏特殊临床表现,当以胸闷、心悸以及心电图改变为突出表现时,易误诊为冠心病。典型的甲状腺功能亢进症(甲亢),因其具有高代谢症候群、神经心血管系统等功能失常、甲状腺肿大、不同程度的突眼症等特征,不难做出诊断。但当甲亢缺乏上述 Primary hypothyroidism (hypothyroidism), invisible and lack of special clinical manifestations, when the chest tightness, palpitations and ECG changes for the outstanding performance, easily misdiagnosed as coronary heart disease. Typical hyperthyroidism (hyperthyroidism), because of its high metabolic syndrome, neurological and cardiovascular system dysfunction, goiter, varying degrees of exophthalmos and other characteristics, is not difficult to make a diagnosis. But when the lack of hyperthyroidism above