Table 1: Disorders of the facial nerve.

InfectiousAcute OM
Chronic OM
Cholesteatoma
Herpes zoster oticus
Lyme disease

TraumaticTemporal bone fracture
Iatrogenic injury
Avulsion at brainstem
Penetrating trauma

NeoplasticFacial schwannoma
Vestibular schwannoma
Hemangioma
Lipoma
Glomus tumors
Malignancy of skin/parotid

CongenitalMoebius syndrome
Displacement (atresia)
Aural atresia
CHARGE syndrome
Dehiscence of FC

VascularMCA infarct
Pontine artery infarct
Lacunar infarct

IdiopathicBell’s palsy
Multiple sclerosis
Sarcoidosis

InflammatoryGuillain-Barre

OM: otitis media; FC: fallopian canal; and MCA: middle cerebral artery.