Facial Paralysis
Severe or complete loss of facial muscle motor function. This condition may result from central
or peripheral lesions. Damage to
central nervous system
motor pathways from the cerebral cortex to the facial
nuclei in the pons leads to facial weakness that generally spares the forehead muscles.
Facial nerves diseases generally results in generalized hemifacial weakness.
neuromuscular junction diseases
and
muscular diseases
may also cause facial paralysis or paresis.
Bell Palsy
A syndrome characterized by the acute onset of unilateral facial paralysis
which progresses over a 2-5 day period. Weakness of the orbicularis oculi muscle
and resulting incomplete eye closure may be associated with corneal injury.
Pain behind the ear often precedes the onset of paralysis.
This condition may be associated with
Human herpesvirus 1
infection of the facial nerve.
Facial nerve palsy following intra-oral surgery performed with local anaesthesia Free Full Text
