_:vb50949076 "url:http://ghr.nlm.nih.gov/glossary=hyperparathyroidism"^^ . _:vb50949076 "url:http://en.wikipedia.org/wiki/Hyperparathyroidism"^^ . _:vb50949076 . _:vb50949076 . _:vb50949076 . _:vb50949076 . _:vb50949076 "A parathyroid gland disease characterized by an overactivity of the parathyroid glands, leading to an excess of parathyroid hormone in the body."^^ . _:vb50949076 . _:vb50949076 .