Important It is possible that the main title of the report Hypoparathyroidism is not the name you expected.
Hypoparathyroidism is a rare condition in which the parathyroid glands fail to produce sufficient amounts of parathyroid hormone or the parathyroid hormone produced lacks biologic activity. The parathyroid glands are part of the endocrine system, the network of glands that secrete hormones into the bloodstream where they travel to various areas of the body. These hormones regulate the chemical processes (metabolism) that influence the function of various organs and activities within the body. Hormones are involved in numerous vital processes including regulating heart rate, body temperature and blood pressure as well as cell differentiation and growth and also in modulation of several metabolic processes. Parathyroid hormone (along with vitamin D and the hormone calcitonin, which is produced by the thyroid gland) plays a role in regulating the levels of calcium and phosphorus in the blood. Due to a deficiency of parathyroid hormone, individuals may exhibit abnormally low levels of calcium in the blood (hypocalcemia) and high levels of phosphorus (hyperphosphatemia).
Hypocalcemia can cause a variety of symptoms including weakness, muscle cramps, excessive nervousness, headaches, and/or uncontrollable twitching and cramping spasms of certain muscles such as those of the hands, feet, arms, legs, and/or face (tetany). Numbness and tingling around the mouth and in the fingers and toes can also occur. The most common cause of hypoparathyroidism is damage to or removal of the parathyroid glands due to surgery for another condition. Hypoparathyroidism can also be caused by an autoimmune process or can occur for unknown reasons (idiopathic) or in association with a number of different underlying disorders.
In rare cases, hypoparathyroidism may occur as a genetic disorder. Such cases can include familial hypoparathyroidism, which may be inherited as an autosomal recessive, autosomal dominant or X-linked recessive trait. NORD has a separate report on familial isolated hypoparathyroidism.
Hypoparathyroidism Association, Inc. PO Box 2258 Idaho Falls, ID 83403 Tel: (866)213-0394 Fax: (205)524-3857 Tel: (866)213-0394 Email: firstname.lastname@example.org. email@example.com. firstname.lastname@example.org. email@example.com Internet: http://www.hypopara.org
Thyroid Foundation of Canada P.O. Box 298 Bath ON K0H 1G0, Canada Fax: 5146309815 Tel: 8002678822 Internet: http://www.thyroid.ca
Endocrine Society 8401 Connecticut Ave Suite 900 Chevy Chase, MD 20815 USA Tel: (301)941-0200 Fax: (301)941-0259 Tel: (888)363-6274 Email: firstname.lastname@example.org Internet: http://www.endo-society.org
American Thyroid Association 6066 Leesburg Pike, Suite 550 Falls Church, VA 22041 USA Tel: (703)998-8890 Fax: (703)998-8893 Email: email@example.com Internet: http://www.thyroid.org
Hormone Health Network 8401 Connecticut Avenue Suite 900 Chevy Chase, MD 20815-5817 Fax: (310)941-0259 Tel: (800)467-6663 Email: firstname.lastname@example.org Internet: http://www.hormone.org/
Genetic and Rare Diseases (GARD) Information Center PO Box 8126 Gaithersburg, MD 20898-8126 Tel: (301)251-4925 Fax: (301)251-4911 Tel: (888)205-2311 TDD: (888)205-3223 Internet: http://rarediseases.info.nih.gov/GARD/
For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
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Last Updated: 4/2/2014 Copyright 1989, 1995, 1997, 1999, 2007, 2011, 2014 National Organization for Rare Disorders, Inc.
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