What is the definition or description of: hyperparathyroidism?

Hyperparathyroidism: Hyperparathyroidism = overactivity of 1 or more parathyroid glands with excess production of parathyroid hormone causing loss of calcium and bone weakness. See: http://www.mayoclinic.org/diseases-conditions/hyperparathyroidism/basics/symptoms/con-20022086

Definition of HPT: The definition is elevated parathyroid hormone, >88 pg/ml, and elevated calcium, >10.4 mg/ml or 1.33 Mmol/ml. Elevated urine calcium, >300mg/24 hrs, is often used as a confirmatory test.