[abnormally increased activity of the parathyroid glands, which may be primary or secondary; primary hyperparathyroidism is associated with neoplasia or hyperplasia; excess of parathyroid hormone leads to alteration in function of bone, renal tubules, and gastrointestinal mucosa. ( CSP )]
UMLS (CSP) C0020502 Relation/PAR: Disorders of parathyroid gland
Relation/CHD: Hyperparathyroidism, Secondary