Hyperparathyroidism is an increased parathyroid hormone (PTH) levels in the blood.[4] This occurs either from the parathyroid glands inappropriately making too much PTH (primary hyperparathyroidism) or other events triggering increased production by the parathyroid glands (secondary hyperparathyroidism).[1] Most people with primary disease have no symptoms at the time of diagnosis.[3] In those with symptoms the most common is kidney stones with other potential symptoms including weakness, depression, bone pains, confusion, and increased urination.[1][2] Both types increase the risk of weak bones.[2][3]