hyperparathyroidism


hyperparathyroidism
A condition due to an increase in the secretion of the parathyroids, causing elevated serum calcium, decreased serum phosphorus, and increased excretion of both calcium and phosphorus, calcium stones and sometimes generalized osteitis fibrosa cystica.
- primary h. h. due to neoplasms or idiopathic hyperplasia of the parathyroid glands.
- secondary h. h. that arises as a result of disordered metabolism producing hypocalcemia, as in chronic uremia due to renal disease, malabsorption, rickets, or osteomalacia; associated with hyperplasia of the parathyroid glands.

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hy·per·para·thy·roid·ism -.par-ə-'thī-.rȯid-.iz-əm n the presence of excess parathyroid hormone in the body resulting in disturbance of calcium metabolism with increase in serum calcium and decrease in inorganic phosphorus, loss of calcium from bone, and renal damage with frequent kidney-stone formation

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n.
overactivity of the parathyroid glands. See also von Recklinghausen's disease.

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hy·per·para·thy·roid·ism (hi″pər-par″ə-thiґroid-iz-əm) a condition caused by excessive amounts of parathyroid hormone, which causes hypercalcemia and hypophosphatemia and affects the functions of many cell types. Manifestations include calcium deposits in the renal tubules; generalized decalcification of bone (osteoporosis) that results in pain and tenderness of bones and spontaneous fractures or in localized bone cysts; hypercalcemia that leads to muscular weakness, gastrointestinal symptoms such as anorexia, nausea, vomiting, and abdominal pains; and drowsiness or obtusion.

Medical dictionary. 2011.

Look at other dictionaries:

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  • hyperparathyroidism — noun Date: 1917 the presence of excess parathyroid hormone in the body resulting in disturbance of calcium metabolism with increase in serum calcium and decrease in inorganic phosphorus, loss of calcium from bone, and renal damage with frequent… …   New Collegiate Dictionary

  • hyperparathyroidism — /huy peuhr par euh thuy roy diz euhm/, n. Pathol. 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… …   Universalium

  • hyperparathyroidism — noun An abnormal increase in parathyroid gland activity …   Wiktionary

  • hyperparathyroidism — n. abnormally active parathyroid glands (Medicine) …   English contemporary dictionary

  • hyperparathyroidism — [ˌhʌɪpəˌparə θʌɪrɔɪdɪz(ə)m] noun Medicine an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium. Derivatives hyperparathyroid adjective …   English new terms dictionary

  • hyperparathyroidism — hy·per·par·a·thy·roid·ism …   English syllables

  • hyperparathyroidism — n. excessive secretion of parathyroid hormone, usually due to a small tumour in one of the parathyroid glands. It results in hypercalcaemia. See also: von Recklinghausen s disease …   The new mediacal dictionary

  • hyperparathyroidism — hy•per•par•a•thy•roid•ism [[t]ˌhaɪ pərˌpær əˈθaɪ rɔɪˌdɪz əm[/t]] n. pat overactivity of the parathyroid gland, characterized by muscular weakness and softening of the bones • Etymology: 1915–20 …   From formal English to slang

  • hyperparathyroidism — A condition in which the parathyroid gland (one of four pea sized organs found on the thyroid) makes too much parathyroid hormone. This causes a loss of calcium from the bones and an increased level of calcium in the blood. Symptoms include bone… …   English dictionary of cancer terms