Hyperparathyroidism(HPT) is an overproduction of parathyroid hormone(PTH). PTH is secreted by the parathyroid glands. We have four parathyroid glands embedded in our thyroid gland, normally they are the size of lentil seed or grain of rice. When they get diseased, they get enlarged and start dumping excess PTH hormone in your blood. The excess hormone affects your bone, kidney as well as other organs.
In the United States, about 100,000 people develop primary hyperparathyroidism disease each year. It is more common in middle-aged women.