WHAT ARE THE MOST COMMON CAUSES OF HYPERTHYROIDISM DURING PREGNANCY?

Overall, the most common cause of hyperthyroidism in women of childbearing age is Graves’ disease (see Graves’ Disease brochure), which occurs in 0.2% of pregnant patients. In addition to other usual causes of hyperthyroidism (see Hyperthyroidism brochure), very high levels of hCG, seen in severe forms of morning sickness (hyperemesis gravidarum), may cause transient hyperthyroidism in early pregnancy. The correct diagnosis is based on a careful review of history, physical exam and laboratory testing.
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WHAT ARE THE MOST COMMON CAUSES OF HYPOTHYROIDISM DURING PREGNANCY?

Overall, the most common cause of hypothyroidism is the autoimmune disorder known as Hashimoto’s thyroiditis (see Hypothyroidism brochure). Hypothyroidism can occur during pregnancy due to the initial presentation of Hashimoto’s thyroiditis, inadequate treatment of a woman already known to have hypothyroidism from a variety of causes, or over-treatment of a hyperthyroid woman with anti-thyroid medications. Approximately, 2.5% of women will have a TSH of greater than 6 mIU/L (slightly elevated) and 0.4% will have a TSH greater than 10 mIU/L during pregnancy.
Go to the Hypothyroidism in Pregnancy Brochure >>

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Articles

July 11, 2019 in Clinical Thyroidology for the Public, Featured, Friends of the ATA, Iodine Deficiency, Thyroid Disease and Pregnancy

Clinical Thyroidology® for the Public – Highlighted Article

From Clinical Thyroidology® for the Public: GUEST BLOG FROM THE IODINE GLOBAL NETWORK Timing matters for…
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October 1, 2018 in 2018 News Releases, 88th Annual Meeting News, Graves' Disease, Hyperthyroidism, News Releases, Thyroid Disease and Pregnancy, Thyroid Function Tests

Disorders of Thyroid Function Presentations at American Thyroid Association: 88th Annual Meeting

October 2, 2018—The American Thyroid Association (ATA) will hold its 88th Annual Meeting on October…
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August 16, 2018 in 2018 News Releases, Basic Science Research, News Releases, Thyroid Disease and Pregnancy, Thyroid Research Grants

Research Grant to Study the Action of T-Regulatory Cells in Thyroid-Antibody-Positive Pregnant Women Awarded to Stephanie Behringer-Massera, MD, by the American Thyroid Association

Stephanie Behringer-Massera, MD Icahn School of Medicine at Mount Sinai New York, NY Bio The…
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FURTHER INFORMATION

For information on thyroid patient support organizations, please visit the Patient Support Links section on the ATA website at www.thyroid.org