<prompt> Chvostek sign is seen in: March 2013HypercalcemiaHypothyroidismInsulinomaDiabetes mellitus  <response>: Ans. B i.e. Hypocalcemia Hypocalcemia Idiopathic hypoparathyroidism is associated with: Genetic syndrome of hypoparathyroidism, - Addisons disease and - Mucocutaneous candid iasis Pseudohypoparathyroidism: No deficiency of parathormone, but target organ bone and kidney are unresponsive to its action Chvosteks sign: Contraction of facial muscles, elicited by light tapping of the facial nerve ECG changes: Prolongation of QT interval 