Hyperthyroidism
Authors: Michael T. McDermott
Journal: Annals of Internal Medicine (2012)

In the Clinic3 July 2012HyperthyroidismMichael T. McDermott, MD, Deborah Cotton, MD, MPH, Darren Taichman, MD, PhD, and Sankey Williams, MDMichael T. McDermott, MDSearch for more papers by this author, Deborah Cotton, MD, MPHSearch for more papers by this author, Darren Taichman, MD, PhDSearch for more papers by this author, and Sankey Williams, MDSearch for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-157-1-201207030-01001 SectionsSupplemental MaterialAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail Hyperthyroidism is a clinical state characterized by excessive serum concentrations of thyroxine (T4), triiodothyronine (T3), or both with suppression of serum thyroid-stimulating hormone (TSH) levels. Some observers prefer the term thyrotoxicosis for this condition and restrict the term hyperthyroidism to the types of thyrotoxicosis that are caused when the thyroid gland synthesizes and secretes too much thyroid hormone. To avoid confusion, however, we will consider hyperthyroidism and thyrotoxicosis to be the same and will use only the term hyperthyroidism.Hyperthyroidism is considered to be "overt" when a low serum TSH level is associated with elevated serum levels of free or ...References1. Singer PA, Cooper DS, Levy EG, et al. Treatment guidelines for patients with hyperthyroidism and hypothyroidism. Standards of Care Committee, American Thyroid Association. JAMA. 1995;273:808-12. [PMID: 7532241] Google Scholar2. Hollowell JG, Staehling NW, Flanders WD, et al. Serum TSH, T(4), and thyroid antibodies in the United States population (1988 to 1994): National Health and Nutrition Examination Survey (NHANES III). J Clin Endocrinol Metab. 2002;87:489-99. 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