hyperparathyroidism

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 outside the parathyroid glands (secondary hyperparathyroidism). Most people with primary disease have no symptoms at the time of diagnosis. When symptoms occur, they are due to elevated blood calcium. With long-standing elevation, the most common symptom is kidney stones. Other symptoms may include bone pain, weakness, ...