Autoimmune polyglandular syndrome (associated with chronic mucocutaneous candidiasis and primary adrenal insufficiency)
Isolated hypoparathyroidism due to activating antibodies to calcium-sensing receptor
Infiltration of the parathyroid gland (granulomatous, iron overload, metastases)
Radiation-induced destruction parathyroid glands
Hungry bone syndrome (post-parathyroidectomy)
HIV infection
HIV: human immunodeficiency virus; PTH: parathyroid hormone.
Data from: Thakker RV. Hypocalcemia: Pathogenesis, differential diagnosis, and management. In: Primer on the metabolic bone diseases and disorders of mineral metabolism, 6th edition, American Society of Bone and Mineral Research 2006; 35:213.