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  2. Hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Hyperparathyroidism

    Symptoms of hyperparathyroidism are caused by inappropriately normal or elevated blood calcium excreted from the bones and flowing into the blood stream in response to increased production of parathyroid hormone. [1] In healthy people, when blood calcium levels are high, parathyroid hormone levels should be low.

  3. Parathyroid hormone - Wikipedia

    en.wikipedia.org/wiki/Parathyroid_hormone

    The differently colored narrow arrows indicate where the specified hormones act, and their effects (“+” means stimulates; “-“ means inhibits) when their plasma levels are high. PTH is parathyroid hormone, 1,25 OH VIT D 3 is calcitriol or 1,25 dihydroxyvitamin D 3, and calcitonin is a hormone secreted by the thyroid gland when the plasma ...

  4. Hypercalcaemia - Wikipedia

    en.wikipedia.org/wiki/Hypercalcaemia

    Intact PTH (iPTH, biologically active parathyroid hormone molecules) is measured with immunoradiometric or immunochemoluminescent assay. Elevated (or high-normal) iPTH with high urine calcium/creatinine ratio (more than 0.03) is suggestive of primary hyperparathyroidism, usually accompanied by low serum phosphate.

  5. Primary hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Primary_hyperparathyroidism

    Primary hyperparathyroidism (or PHPT) is a medical condition where the parathyroid gland (or a benign tumor within it) produce excess amounts of parathyroid hormone (PTH). ). The symptoms of the condition relate to the resulting elevated serum calcium (hypercalcemia), which can cause digestive symptoms, kidney stones, psychiatric abnormalities, and bone dis

  6. Familial hypocalciuric hypercalcemia - Wikipedia

    en.wikipedia.org/wiki/Familial_hypocalciuric...

    Calcium levels are often in the high normal range or slightly elevated. Commonly, the parathyroid hormone level is checked and may be slightly elevated or also on the high normal end. Normally, high calcium should cause low PTH and so this level of PTH is inappropriately high due to the decreased sensitivity of the parathyroid to calcium.

  7. Metastatic calcification - Wikipedia

    en.wikipedia.org/wiki/Metastatic_calcification

    Metastatic calcification is deposition of calcium salts in otherwise normal tissue, because of elevated serum levels of calcium, [1] which can occur because of deranged metabolism as well as increased absorption or decreased excretion of calcium and related minerals, as seen in hyperparathyroidism.

  8. Parathyroid disease - Wikipedia

    en.wikipedia.org/wiki/Parathyroid_disease

    Hyperparathyroidism is a condition caused by overproduction of PTH, and can be divided into three types. [citation needed] Primary hyperparathyroidism happens when the normal mechanism of regulation by negative feedback of calcium is interrupted, or in other words the amount of blood calcium would ordinarily signal less production of PTH.

  9. Tertiary hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Tertiary_hyperparathyroidism

    Tertiary hyperparathyroidism is a condition involving the overproduction of the hormone, parathyroid hormone, produced by the parathyroid glands. [1] The parathyroid glands are involved in monitoring and regulating blood calcium levels and respond by either producing or ceasing to produce parathyroid hormone.