Medicine Chvostek sign is? A Twitching of circumoral muscles on tapping of facial nerve B Involuntary blink on tapping on facial nerve C Inability to open eye on tapping of facial nerve D Inability to close eye on tapping of facial nerve 💡 Explanation Chvostek sign is? ✓ Correct Answer: A. Twitching of circumoral muscles on tapping of facial nerve