HypoPT, a rare metabolic disorder characterized by hypocalcemia and low or undetectable levels of parathyroid hormone (PTH),[3] often presents with neuropsychiatric symptoms, leading to frequent misdiagnosis, particularly among neurologists.[4] Systemic calcifications may affect multiple organs, most commonly the kidneys, but also joints, eyes, skin, and the vascular system. The gene discussed is PTH; the disease is Other metabolic disease.