MICROANATOMY

Detailed explanation-1: -The increased irritability of the facial nerve, manifested by twitching of the ipsilateral facial muscles on percussion over the branches of the facial nerve, came to be known as Chvostek sign. This clinical finding has become widely accepted in the medical community as a sign of hypocalcemia.

Detailed explanation-2: -Chvostek’s sign is de-scribed as the twitching of facial muscles in response to tapping over the area of the facial nerve (Video 1). Trousseau’s sign is carpopedal spasm that results from ischemia, such as that induced by pressure applied to the upper arm from an in-flated sphygmomanometer cuff (Video 2).

Detailed explanation-3: -Hemifacial spasm can be caused by injury to the facial nerve, a tumor or blood vessel compressing the nerve, or Bell’s palsy. The most common cause is compression of your facial nerve by the anterior inferior cerebellar artery where the nerve begins at your brainstem.