Hypercalcemia Symptom and Hypercalcemia Cause by Ray Sahelian, M.D.
Hypercalcemia is defined as an excessive amount of calcium in the blood.
Hypercalcemia symptom
Symptoms
of hypercalcemia can influence many organs and tissues of the body. For
instance, in the skeletal system, hypercalcemia can lead to bone pain,
spinal column curvature, and pathological fractures. Abnominal symptoms of
hypercalcemia include nausea, vomiting, and constipation. Pschological
symptoms of hypercalcemia could include depression, irritability, apathy,
and dementia. In the musculoskeletal system, hypercalcemia can lead to the
symptoms of weakness, muscle twitches, and muscle atrophy. Kidneys can be
damaged and lead to frequent urination.
Hypercalcemia Cause
The two most common causes of hypercalcemia are primary
hyperparathyroidism and cancer.
Primary hyperparathyroidism is the most common cause of hypercalcemia and is due
to excess PTH. Parathyroidectomy is the only curative intervention for primary
hyperparathyroidism. Another cause of hypercalcemia
is multiple myeloma.
Some malignant tumors (for example, lung cancers,
breast cancer) produce PTH-related peptide which increases blood calcium. Excess
vitamin D (hypervitaminosis D) from diet or inflammatory diseases can also cause
hypercalcemia. Kidney failure, adrenal gland failure, hyperthyroidism, prolonged
immobilization, use of a class of diuretics called thiazides, and ingestion of
massive amounts of calcium (milk-alkali syndrome) are other potential
hypercalcemia causes.
Hypercalcemia Treatment
In the rare cases of patients
with primary hyperparathyroidism who present with clinical symptoms due to their hypercalcemia, pharmacological treatment may be required. Fluid repletion and
intravenous (IV) administration of bisphosphonates are recommended in the
literature. Calcium receptor agonists (calcimimetic agents) are at the present
time only available for use within clinical trials. Cancer patients usually
present with symptoms of hypercalcemia. Rapid institution of antihypercalcemic
treatment is essential in preventing life-threatening deterioration. Fluid
repletion and administration of bisphosphonates are the treatment mainstays in
hypercalcemia of malignancy. Five bisphosphonates are currently licensed in
Europe for treatment of tumor-associated hypercalcemia: etidronate, clodronate,
pamidronate, ibandronate, and zoledronate. In the US, pamidronate and
zoledronate are licensed for use in this indication. Bisphosphonates containing
nitrogen atoms (e.g. pamidronate, ibandronate, and zoledronate) are more potent
than those without (e.g. etidronate, clodronate, and tiludronate). In patients
with malignant hypercalcemia, the efficacy of the individual bisphosphonate
depends on dose administered and initial serum
calcium concentration.
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Hypercalcemia symptom
Hypercalcemia cause