Mondo Description Neonatal severe primary hyperparathyroidism (NSHPT) is characterized by severe hypercalcemia (> 3.5 mM) from birth and associated with major hyperparathyroidism.

Uniprot Description A disorder characterized by severe hypercalcemia, bone demineralization, and failure to thrive usually manifesting in the first 6 months of life. If untreated, NSHPT can be a devastating neurodevelopmental disorder, which in some cases is lethal without parathyroidectomy.