A 6-day-old newborn girl from an unremarkable pregnancy and vaginal delivery was observed for the first tme by her primary care physician presenting facial asymmetry when crying. Physical and neurological examination showed facial asymmetry noted only on crying, with a drooping of the right corner of the mouth (figure 1). The eyelid closure, nasolabial fold depths, forehead elevation and tearing, were symmetric and normal. The facial asymmetry disappeared after the crying stopped (figure 2) and, according to the mother, this was happening since birth.


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