Hyperparathyroidism is a disease that causes your parathyroid glands to make too much parathyroid hormone (PTH). The parathyroid glands are 4 small glands in your neck that make PTH. They are called 'parathyroid' because they are next to your thyroid gland.
Parathyroid hormone (PTH) is a crucial hormone produced by the parathyroid glands, which are four small glands located behind the thyroid gland in the neck. PTH plays a vital role in regulating calcium, phosphate, and vitamin D levels in the blood and bones.