Trauma |
Basal skull fractures Birth trauma Facial injuries Otitic barotrauma
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Neurologic |
Brainstem infarction Multiple sclerosis Myasthenia gravis
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Infection |
Otitis media Mastoiditis Herpes zoster oticus Mumps Guillain-Barré syndrome Syphillis Leprosy Lyme disease Cat scratch
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Metabolic |
Diabetes mellitus Pre-eclampsia Acute porphyria
|
Neoplastic | Lymphoma Tumours of the parotid gland Tumours of the middle ear including cholesteatoma Tumours of the petrosal bone Tumours of the cerebellopontine angle including acoustic neuroma Idiopathic Bell's palsy Melkersson-Rosenthal syndrome
|
Iatrogenic |
Parotid surgery Mastoid surgery
|
Autoimmune |
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