This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Chvostek sign is seen in: \nSelect and explain. \nA. Hypercalcemia, B. Hypoparathyroidism, C. Insulinoma, D. Diabetes mellitus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hypocalcemia Idiopathic hypoparathyroidism is associated with: Genetic syndrome of hypoparathyroidism, - Addison&;s disease and - Mucocutaneous candid iasis Pseudohypoparathyroidism: No deficiency of parathormone, but target organ (bone and kidney) are unresponsive to its action Chvostek&;s sign: Contraction of facial muscles, elicited by light tapping of the facial nerve ECG changes: Prolongation of QT interval REF: Harrison book of internal medicine 21ST EDITION', 'role': 'assistant'}]