Secondary hyperparathyroidism

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Secondary hyperparathyroidism
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Synonyms
Pronounce N/A
Specialty N/A
Symptoms Bone pain, muscle weakness, fatigue, depression
Complications Osteoporosis, cardiovascular disease, calciphylaxis
Onset
Duration
Types
Causes Chronic kidney disease, vitamin D deficiency, malabsorption
Risks
Diagnosis Blood test for parathyroid hormone, calcium, phosphate, vitamin D levels
Differential diagnosis Primary hyperparathyroidism, tertiary hyperparathyroidism
Prevention
Treatment Vitamin D supplements, phosphate binders, calcimimetics, parathyroidectomy
Medication
Prognosis
Frequency Common in patients with chronic kidney disease
Deaths


Secondary hyperparathyroidism is a disorder of the parathyroid glands in which they secrete excessive amounts of parathyroid hormone (PTH). This condition is often a complication of chronic kidney disease and vitamin D deficiency.

Causes[edit]

Secondary hyperparathyroidism is most commonly caused by chronic kidney disease. The kidneys play a crucial role in maintaining calcium and phosphorus balance in the body. When the kidneys are not functioning properly, they are unable to convert vitamin D into its active form, leading to a decrease in calcium absorption from the intestines. This results in low calcium levels in the blood, which stimulates the parathyroid glands to secrete more PTH. Other causes of secondary hyperparathyroidism include vitamin D deficiency and certain medications, such as phenytoin and rifampin, which can interfere with the body's ability to convert vitamin D into its active form.

Symptoms[edit]

The symptoms of secondary hyperparathyroidism can vary depending on the underlying cause and the severity of the condition. Common symptoms include bone pain, muscle weakness, fatigue, and depression. In severe cases, the condition can lead to bone deformities and fractures.

Diagnosis[edit]

The diagnosis of secondary hyperparathyroidism is usually made based on blood tests that measure levels of calcium, phosphorus, PTH, and vitamin D. Imaging tests, such as ultrasound or computed tomography (CT) scan, may also be used to assess the size and shape of the parathyroid glands.

Treatment[edit]

The treatment of secondary hyperparathyroidism depends on the underlying cause. In cases caused by chronic kidney disease, treatment may include medications to control phosphorus levels, vitamin D supplements, and in some cases, surgery to remove the parathyroid glands. In cases caused by vitamin D deficiency, treatment typically involves vitamin D supplements.

See also[edit]