I've been diagnosed with hyperparathyroidism, what is this exactly?

High parathyroid: Hyperparathyroidism is a condition characterized by high parathyroid concentration. Parathyroid hormone is responsible for regulating calcium level in blood. The most common cause of hyperparathyroidism is a growth on your parathyroid gland causing overproduction of this hormone. If high, it will raise calcium level in your blood causing osteoporosis, kidney stones, kidney problems, constipation..

Three kinds: There are three kinds of hyperparathyroidism: primary, secondary, and tertiary. Primary is most common and is due to one or more parathyroid glands in the neck becoming over active and producing excess amounts of parathyroid hormone. This hormone functions to increase the level of calcium in the bloodstream by indirectly increasing absorption of calcium from our diet and leeching it from bone.

OveractiveParathyroi: Hyperparathyroidism is when one or more of the Parathyroid gland(there are4 of them) start producing more Parathyroid Hormone. Parathyroid Hormone control the Calcium level in your blood.As there is more hormone secreted the Calcium level rises as calcium is taken out of the bones and released in the blood stream and causes Osteoprosis.and other symptoms like kidney stones due to elevated Calcium

HPT: HPT is elevated calcium caused by an excess of parathyroid hormone. The excess hormone comes from a tumor (s) of the parathyroid. The calcium comes from your bones.