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hyperparathyroidism

[hahy-per-par-uh-thahy-roi-diz-uh m] /ˌhaɪ pərˌpær əˈθaɪ rɔɪˌdɪz əm/
noun, Pathology
1.
overactivity of the parathyroid gland, characterized by softening of the bones, with consequent pain, tenderness, and a tendency to spontaneous fractures, and by muscular weakness and abdominal cramps.
Origin
1915-1920
1915-20; hyper- + parathyroid + -ism
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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hyperparathyroidism in Medicine

hyperparathyroidism hy·per·par·a·thy·roid·ism (hī'pər-pār'ə-thī'roi-dĭz'əm)
n.
An increase in the secretory activity of the parathyroid glands, causing generalized osteitis fibrosa cystica, elevated serum calcium, decreased serum phosphorus, and increased excretion of both calcium and phosphorus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for hyperparathyroidism

abnormal increase in the secretion of parathyroid hormone by one or more parathyroid glands (see parathyroid gland). The oversecretion is usually caused by a tumour or enlargement of parathyroid tissue and results in high blood and urine calcium and low blood and high urine phosphorus. The excess calcium is withdrawn from the bones, resulting in (osteoporosis) and an increased susceptibility to fracture. Other effects are kidney stones and decreased nervous and muscular excitability. Treatment is usually surgical removal of the tumour or excess parathyroid tissue.

Learn more about hyperparathyroidism with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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