Facial nerve palsy

Question 1

Unilateral causes:

Answer 1

• Idiopathic: Bell’s palsy
• Infection: otitis media, TB, HSV
• Inflammation: sarcoidosis, lymphoma
• Traumatic injury
• Vascular (stroke)
• Malignancy: cholesteatoma, acoustic neuroma

Question 2

Bilateral causes:

Answer 2

• Autoimmune: Guillain-Barre syndrome, Myasthenia gravis
• Infection: Lyme disease, HIV
• Sarcoidosis
• Motor neurone disease