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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
Secondary hyperparathyroidism typically occurs due to vitamin D deficiency, chronic kidney disease, or other causes of low blood calcium. [1] The diagnosis of primary hyperparathyroidism is made by finding elevated calcium and PTH in the blood. [2] Primary hyperparathyroidism may only be cured by removing the adenoma or overactive parathyroid ...
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.
Nephrocalcinosis, once known as Albright's calcinosis after Fuller Albright, is a term originally used to describe the deposition of poorly soluble calcium salts in the renal parenchyma due to hyperparathyroidism. The term nephrocalcinosis is used to describe the deposition of both calcium oxalate and calcium phosphate. [1]
Secondary hyperparathyroidism can also result from malabsorption (chronic pancreatitis, small bowel disease, malabsorption-dependent bariatric surgery) in that the fat-soluble vitamin D can not get reabsorbed. This leads to hypocalcemia and a subsequent increase in parathyroid hormone secretion in an attempt to increase the serum calcium levels.
After recognition, primary hyperparathyroidism should be proved or excluded. [10] In extreme cases of primary hyperparathyroidism, removal of the parathyroid gland after surgical neck exploration is the only way to avoid death. [10] The diagnostic program should be performed within hours, in parallel with measures to lower serum calcium. [10]
Parathyroidectomy may also be required in secondary hyperparathyroidism. This situation arises mainly in people with severe chronic kidney disease in which the parathyroid glands are overactive to compensate for the low calcium and vitamin D levels often present in CKD. In many cases, the parathyroid hormone production improves when these ...
Complications may include seizures, coma, rhabdomyolysis, or softening of the bones. [1] Causes include alcohol use disorder, refeeding in those with malnutrition, recovery from diabetic ketoacidosis, burns, hyperventilation, and certain medications. [1] It may also occur in the setting of hyperparathyroidism, hypothyroidism, and Cushing ...