Facial nerve palsy due to birth trauma

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Central nervous system

Seventh cranial nerve palsy due to birth trauma

These may be observed in the newborn infant:

• Present immediately after birth
• Failure of the lower lip to pull down symmetrically while crying (typical)
• Failure of any movement on the affected side of the face (total involvement, unusual)
• Eyelid may not close on affected side
• Lower face (below eyes) appears asymmetrical while crying

Physical examination is usually sufficient to diagnose this condition. Rarely, a nerve conduction study with electromyogram is needed. This test can pinpoint the location of the nerve injury.

Brain imaging techniques are not needed, unless another problem (such as a stroke) is suspected.

Review Date: 09/25/2006
Reviewed By: Kenneth Gross, M.D., Neurology, North Miami, FL. Review provided by VeriMed Healthcare Network.