<unk>  is the medical condition of excessive secretion of parathyroid hormone (PTH) by the parathyroid glands in response to hypocalcemia (low blood calcium levels), with resultant hyperplasia of these glands. This disorder is primarily seen in patients with chronic kidney failure. It is sometimes abbreviated "SHPT" in medical literature.
Secondary hyperparathyroidism
Primary hyperparathyroidism
Tertiary hyperparathyroidism
Familial hypocalciuric hypercalcemia
Normophosphatemic familial tumoral calcinosis
Pseudohypoparathyroidism
Pseudopseudohypoparathyroidism
Parathyroid adenoma