The Chvostek sign is indicative of which condition?

The Chvostek sign is a clinical indicator of hypocalcemia, which is commonly associated with hypoparathyroidism. In this condition, the parathyroid glands are unable to produce sufficient parathyroid hormone (PTH), leading to low levels of calcium in the blood. The Chvostek sign is elicited by tapping on the facial nerve near the ear, resulting in twitching of the facial muscles on the same side, which demonstrates increased neuromuscular excitability due to low calcium levels.

In the case of hypoparathyroidism, the lack of PTH diminishes the body’s ability to regulate calcium effectively, causing the characteristic symptoms and signs of low calcium status, including the Chvostek sign. This is particularly significant in diagnosing and managing patients who exhibit symptoms of hypocalcemia.

Other conditions listed may involve electrolyte imbalances or hormonal changes, but they do not typically produce the Chvostek sign in the same way as hypoparathyroidism does.