Hyperparathyroidism, Secondary

**Definition:** Abnormally elevated PARATHYROID HORMONE secretion as a response to HYPOCALCEMIA. It is caused by chronic KIDNEY FAILURE or other abnormalities in the controls of bone and mineral metabolism, leading to various BONE DISEASES, such as RENAL OSTEODYSTROPHY.

**Tree numbers:** - C19.642.355.480

**Synonyms:** - Secondary Hyperparathyroidism