2. What is facial nerve
Structures supplied by facial nerve
Causes of facial nerve palsy
Clinical features of facial nerve palsy
Bells Palsy
3. Facial nerve is the VIIth cranial nerve.
It’s a mixed cranial nerve. It means it has
both sensory and the motor components.
It originates at the level of pons in brain stem
and exit the cranial cavity through
stylomastoid foramen and enter into parotid
gland.
4. Tearing -- Lacrimal Gland
Taste -- Anterior 2/3 of the Tongue
Saliva Production -- Sublingual Gland,
Submandibular Gland,
Nasal and Palatine Gland
Muscles of Facial Expression
Stapedius Muscle -- A muscle which helps to
protect the ear from loud noises.
Contains a few somatic afferent fibers.
8. Facial asymmetry
Eyebrow droop
Loss of forehead & nasolabial folds
Drooping of corner of mouth
Uncontrolled tearing
Inability to close eye
Lips not held tightly together: Difficulty
keeping food in mouth
Facial muscle atrophy (Late)
9. What’s the difference between supranuclear
and infranuclear facial nerve palsy.
In Supranuclear palsy – paralysis is limited to
the lower half of the face.
In infranuclear palsy – paralysis affects the
whole face
10. Homework?
The upper half of the face receives nerve
supply from both sides.
11.
12. Depend on the cause. Treatment of the cause
will relieve symptoms.
E.g. – Otitis media – Antibiotics, drainage
Tumour - Excision
13. Bell's palsy is thought to be due to swelling
(inflammation) of this nerve in the area where
it travels through the bones of the skull.
The cause is often not clear. (Idiopathic) A
type of herpes infection called herpes
zoster might be involved.
14. Corticosteroids
Anti- viral medications: E.g. Acyclovir
Protect eye from exposure
Facial exercise – Facial retraining
15. Find out about the facial retraining
techniques.
