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hyperparathyroidism
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hyperparathyroidism

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Also known as hyperparathyreosis

Hyperparathyroidism is an increase in parathyroid hormone (PTH) levels in the blood. This occurs from a disorder either within the parathyroid glands (primary hyperparathyroidism) or as response to external stimuli (secondary hyperparathyroidism). Symptoms of hyperparathyroidism are caused by inappropriately elevated blood calcium excreted from the bones into the blood stream in response to increased production of parathyroid hormone. In healthy people, when blood calcium levels are high, parathyroid hormone levels should be low. With long-standing hyperparathyroidism, the most common symptom

Key facts

Medical condition.name
Hyperparathyroidism
Medical condition.image
3D Medical Animation still shot Hyperparathyroidism.jpg
Medical condition.caption
3D diagram of hyperparathyroidism
Medical condition.field
Endocrinology
Medical condition.symptoms
None, kidney stones, weakness, depression, bone pains, confusion, increased urination
Medical condition.complications
Osteoporosis
Medical condition.onset
50 to 60
Medical condition.types
Primary, secondary
Medical condition.causes
Primary: parathyroid adenoma, multiple benign tumors, parathyroid cancerSecondary: vitamin D deficiency, chronic kidney disease, low blood calcium
Medical condition.diagnosis
High blood calcium and high PTH levels
Medical condition.treatment
Monitoring, surgery, intravenous normal saline, cinacalcet
Medical condition.frequency
~2 per 1,000

via Wikipedia infobox

Research

36,939 papers

via PubMed

Wikidata facts

Image
Illu thyroid parathyroid.jpg
Show 4 more facts
NCI Thesaurus ID
C48259
Commons category
Hyperparathyroidism
ICD-9-CM
252.0
Sources (4)

via Wikidata · CC0

~20 min read

Article

27 sections
Contents
  • Signs and symptoms
  • Causes
  • Development
  • Mechanism
  • Regulation of PTH
  • Diagnosis
  • Differential diagnosis
  • Blood tests
  • Intact PTH
  • Calcium levels
  • Serum phosphate
  • Alkaline phosphatase
  • Nuclear medicine
  • Classification
  • Primary
  • Secondary
  • Tertiary
  • Treatment
  • Primary
  • Secondary
  • Tertiary
  • Calcimimetics
  • Epidemiology
  • History
  • Notes
  • References
  • External links

Hyperparathyroidism is an increase in parathyroid hormone (PTH) levels in the blood. This occurs from a disorder either within the parathyroid glands (primary hyperparathyroidism) or as response to external stimuli (secondary hyperparathyroidism). Symptoms of hyperparathyroidism are caused by inappropriately elevated blood calcium excreted from the bones into the blood stream in response to increased production of parathyroid hormone. In healthy people, when blood calcium levels are high, parathyroid hormone levels should be low. With long-standing hyperparathyroidism, the most common symptom is kidney stones. Other symptoms may include bone pain, weakness, depression, confusion, and increased urination. Both primary and secondary may result in osteoporosis (weakening of the bones).

In 80% of cases, primary hyperparathyroidism is due to a single benign tumor known as a parathyroid adenoma. Most of the remainder are due to several of these adenomas. Very rarely it may be due to parathyroid cancer. Secondary hyperparathyroidism typically occurs due to vitamin D deficiency, chronic kidney disease, or other causes of low blood calcium. The diagnosis of primary hyperparathyroidism is made by finding elevated calcium and PTH in the blood.

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