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Facial palsy
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Facial palsy

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Contributors: Andrea Wasilewski MD, Richard L. Barbano MD, PhD
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Synopsis

Facial palsy is the complete or partial loss of facial muscle motor function due to damage to the seventh cranial nerve. The most common type of facial palsy is Bell's palsy (also known as idiopathic facial paralysis), an acute onset unilateral lower motor neuron palsy characterized by upper and lower facial muscle paralysis.

Patients with Bell's palsy present with inability to close the eye, inability to raise the corner of the mouth, and often difficulty controlling saliva drainage from the affected side. This is often caused by reactivation of herpes simplex virus or herpes zoster infection.

In contrast to peripheral lower motor neuron palsy, facial palsy can be caused by an upper motor neuron lesion such as a stroke or mass lesion and typically only affects the lower portion of the face. Bilateral facial nerve palsy may be seen in the setting of infections such as Lyme disease. Findings of additional cranial neuropathies should prompt consideration of diagnoses other than Bell's palsy.

Codes

ICD10CM:
G58.0 – Other disorders of facial nerve

SNOMEDCT:
280816001 – Facial Palsy

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Last Reviewed: 08/29/2018
Last Updated: 09/07/2018
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Facial palsy
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Facial palsy : Otalgia, Altered taste, Dry eyes
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