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Chvostek's Sign: Sensitivity and Specificity

Introduction: None written. Excerpt from the entry in Hypocalcemia:
"The most well-known version of the sign, or the Chvostek I phenomenon, is described as twitching and/or contracture of the facial muscles produced by tapping on the facial nerve at a specific point on the face. This point is located 0.5 to 1 cm below the zygomatic process of the temporal bone, 2 cm anterior to the ear lobe, and on a line with the angle of the mandible."

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Associated Diagnoses:


29% sensitive, 75% specific