<prompt> Facial nerve palsy can be caused by -CholesteatomaMultiple sclerosisMastoidectomyAll of the above  <response>: Ans. is d i.e., Ail of the above Causes of facial paralysis1. Central :-Brain abscess, pontine glioma, Polio, multiple sclerosis2. Intracranial part cerebellopontine angle :- Acoustic neuroma, meningioma, congenital cholesteatoma, metastatic carcinoma, meningitis3. Intratemporal part:-Idiopathic :- Bells palsy, Melkerssons syndromeInfections:- ASOM, CSOM, Herpes zoster oticus, malignant otitis externaTrauma:- Surgical mastoidectomy, stapedectomy, accidental fractures of temporal boneNeoplasms :- Malignancies of external and middle ear, glomus jugular, facial nerve neuroma, metastasis from breast, lung etc.4. Extracranial part :- Malignancies or surgery or injury to parotid gland5. Systemic diseases :- Diabetes, hypothyroidism, uremia, PAN, Sarcoidosis Heerfordts syndrome, leprosy, leukaemia, demyelinating disease 