Skip to content. What are facial motion disorders Facial motion disorders refer to a group of conditions characterized by absent or abnormal facial motion, including facial paralysis, paresis partial paralysisfacial weakness or spasm. A loss of facial movement is often called facial nerve palsy, since it is caused by damage to the facial nerve.
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On examination, the baby had asymmetric frowning, complete eye closure, and normal extraocular movements. No facial asymmetry was observed when the baby was quiet and resting [Figure 1]. However, on crying, while the left corner of the mouth deviated downward and outward, the right corner did not [Figure 2].
When the baby cries, the mouth is pulled downward on one side while not moving on the other side. This facial weakness only affects the lower lip. It occurs on the left side in nearly 80 per cent of cases.
When one looks closely, these differences become more apparent. However, there are conditions in children in which the normal minor differences are much more significant. Children born with this congenital condition have one half of the face that didn't develop as well as the other.
Among all cranial nerves, the facial nerve is the most exposed to birth injuries. Difficulties with medical assistance during the first months of life for children with a facial nerve birth injury is known and debated. According to the literature data, the scope of diagnostic and treatment activities varies, and these treatments have not always demonstrated effectiveness. We discuss the protocol of medical assistance for newborns and children during the first months of life with a facial nerve birth trauma.
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We report two infants presenting with unilateral congenital facial palsy since birth. Magnetic resonance imaging MRI in both the cases revealed complete unilateral aplasia of facial nerve. To our knowledge, this is the first reported MR depiction of nonsyndromic isolated facial nerve aplasia. Imaging features and the pertinent anatomy is discussed along with a brief review of literature.