1. What conditions are associated with hypo- and hyperthyroidism?
The most common causes of thyroid dysfunction are autoimmune-related. Graves’ disease causes hyperthyroidism, and Hashimoto’s thyroiditis causes hypothyroidism. Both hyper- and hypothyroidism can also be caused by thyroiditis (thyroid inflammation), thyroid cancer, and excessive or deficient production of TSH.
This article was last reviewed on 26 April 2012. | This article was last modified on 3 October 2014.
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