Congenital Unilateral Hypoplasia of Depressor Angularis Oris Musclewith Asymmetric Crying Face in Newborn

Abstract

ABSTRACT: - BACKGROUND: Asymmetric crying face is a rare congenital condition associated with abnormalities of facial musculature or facial innervation. This is characterized by facial asymmetry, especially when infant cries while other facial expressions remains intact. Asymmetric crying face is caused by congenital unilateral hypoplasia or aplasis of depressor angularis orris muscle and is often confused with facial nerve palsy which causes weakness of facial expressions. This condition is diagnosed by the clinical picture and/or an electromyographic study. We describe clinical features of congenital unilateral (right) hypoplasia of depressor angularisorris muscle in a newborn