Hypoparathyroidism (not hypERparathyroidism) is a condition characterized by very low PTH levels and very low calcium levels. It usually occurs when all of the parathyroids are removed or damaged during an operation, though rarely it occurs spontaneously.
I'm really worried about becoming hypOparathyroid after parathyroid surgery. How do you prevent that?
Postoperative permanent hypoparathyroidism (a lifelong deficiency of PTH) is a known risk of thyroid and parathyroid surgery. It is a terrible complication, but fortunately it is extremely rare. Note that everyone will have some temporary hypoparathyroidism after parathyroid surgery - this is expected, since the remaining parathyroid glands have been suppressed and are not making much PTH. This...