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轻度甲状腺机能减退(甲减)仅有很少的临床表现,且常无明显的特异性,因此诊断比较困难。一般认为本病是由于自身免疫性甲状腺炎引起的,在产生明显甲减之前,即存在无症状的自身免疫性甲状腺炎,从无症状期发展至明显的甲减症状可历时数日,甚至3～4年。诊断本病主要依靠实验室检查,特点是:①血清促甲状腺素(TSH)增高;②极轻微的甲减患者,用促甲状腺素-甲状腺释放激素(TSH-TRH)
Mild hypothyroidism (hypothyroidism) has only minimal clinical manifestations, and often no obvious specificity, so the diagnosis is more difficult. Is generally believed that the disease is caused by autoimmune thyroiditis, in the production of significant hypothyroidism before the existence of asymptomatic autoimmune thyroiditis, asymptomatic development to obvious hypothyroidism symptoms may lasted several days, or even 3 ~ 4 years. Diagnosis of the disease depends mainly on laboratory tests, characterized by: ① serum thyroid hormone (TSH) increased; ② very mild hypothyroidism, with thyroid stimulating hormone - thyroid releasing hormone (TSH-TRH)