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Pathology
Damage to facial nerve
Aetiology
Idiopathic: Bell’s Palsy
Brainstem Lesions: Stroke or tumour
Infection: Varicella Zoster (Ramsey Hunt Syndrome), HSV, Lyme disease, Meningitis
Systemic: Diabetes, Sarcoidosis, Guillain-Barré Syndrome
Signs
Vesicle formation in Bell’s Palsy and Ramsey Hunt Syndrome
Symptoms
Unilateral facial weakness, hyperacusis.
Investigations
Imaging: MRI to assess for underlying cause
Treatment
Medical: Prednisolone, eye lubrication and acyclovir
Prognosis
80% recover within 2 months.
Corneal injury, nerve degeneration and weakness
Key Facts
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Key Images
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Key References
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