Tetany in a Young Female Not Resulting From Hypocalcemia

Here, we report on a case of a 24-year-old female who is previously medically healthy. She was admitted with a case of gastroenteritis. During her hospitalization, we noticed that the patient's wrists and metacarpophalangeal (MCP) joints were flexed, with her bilateral proximal (PIP) and distal (DIP) interphalangeal joints extended. Furthermore, she exhibited positive Chvostek and Trousseau signs. Her clinical features were consistent with acute tetany; however, she was demonstrating normal levels of calcium. Other laboratory results were positive for severe metabolic alkalosis and hypophosphatemia. Her signs and symptoms resolved completely after one dose of intravenous calcium gluconate. This case is notable because tetany alongside normocalcemia is a rare condition. Therefore, the immediate management of such cases is crucial.