what causes the damage? Mostly unknown May be caused by a viral infection
Bell palsy
Diagnosis
Diagnosed There are no special lab tests to confirm diagnosis. Electromyography Confirm presence of damage and determine severity. MRI and CT Causes of pressure on nerve.
Scottish anatomist, surgeon, and physiologist, born November 1774; died 28th April, 1842.
Bell palsy
What nerve was that again? The 7th cranial nerve is paired with the structure that travels through a narrow, bony canal (called the Fallopian canal) in the skull beneath the ear
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特发性面神经麻痹
主讲：XX XX
凡大医治病，必当安神
定志，无欲无求，先发大慈恻 隐之心，誓愿普救含灵之苦。
- - 孙思邈
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Idiopathic facial palsy
Bell palsy
Which side of the face have problem?
Bell palsy The nerve is mostly encased in this bony shell.
Function
Bell palsy
Facial Nerve
Each nerve controls: Eye blinking and closing Facial expressions Smiling and frowning
Symptom 2/2
Bell palsy
Pain in behind the ear
Ringing in one or both ears
Impaired speech
Difficulty eating and drinking
Pathogenesis
Bell palsy
What Causes this? It occurs when the facial nerve is swollen, inflamed, or compressed
Treatment
Bell palsy
Treatment
No real Treatment Symptoms usually subside Anti-inflammatory and antiviral Prednisone（强的松） and acyclovir（阿
昔洛韦）
Increases the chance of recovery. Acupuncture and surgery for long term paralysis
Tear glands(腺体)
Taste sensations
Symptom 1/2
Bell palsy
Varies from person to person Comes on suddenly Mild to total paralysis Weakness, twitching (抽搐) on one of both sides of the face Facial and eyelid droop Drooling Dryness of eye or mouth Impairment of taste Excessive tearing of eye
dripping tears and doesn't want to close.
What
in the world is going on?
Bell palsy
No silly it’s Bell Palsy Who is Bell?
Charles Bell Well known for his studies on the nervous system and the brain. In the 19th century he discovered that lesions of the 7th cranial nerve causes facial paralysis.
Bell palsy
You
wake up one morning, and your face feels
stiff，when you look in a mirror, half your face appears to droop.
You
can only manage half a smile, your eye is
Bell palsy
Treatment Cont.
Hard to close eye Use eye patch Eye drops Tape eye shut when sleeping
Prognosis
Bell palsy
When does it go away?
Outcome is good! Total recovery depends on amount of damage to nerve Improvement is gradual Usually start to get better after 2 weeks of onset and most recover completely within 3 to 6 months. In a few cases, the symptoms may never completely disappear. In rare cases, the disorder may recur, either on the same or the opposite side of the face.