A number of conditions can result in Bell's palsy (facial nerve mononeuropathy).

Conditions associated with Bell's palsy include:

(1) viral infection, including HIV, EBV, HSV and Herpes zoster

(2) Lyme disease

(3) Guillain-Barre syndrome

(4) otitis media

(5) syphilis

(6) stroke

(7) multiple sclerosis

(8) sarcoidosis

(9) tumor

(10) trauma to the facial nerve

(11) Melkersson-Rosenthal syndrome

(12) Moebius syndrome

(13) stroke

(14) ischemia (preeclampsia, hypertension, diabetes, etc)


Many cases are considered idiopathic, presumably post-viral.

To read more or access our algorithms and calculators, please log in or register.