- Facial palsy
- Peripheral facial paralysis
- G51.0 Bell’s palsy, facial palsy
- Paralysis or weakness of muscles on one side of face
- Sudden onset, often overnight
- Damage to the 7th cranial (facial) nerve that controls
muscles on one side of the face, causing that side of face to droop
- Nerve damage may affect sense of taste, production of tears
- Lower motor neuron (LMN) disease
- Diagnosis usually made by history and clinical examination
- Afflicts approximately 40,000 Americans each year
- Equally likely in men and women
- Can present at any age, but less common before age 15 years
or after age 60
- More prevalent in people with diabetes or upper respiratory
ailments, such as flu or cold
- More likely in pregnant women
- Sudden weakness or paralysis on one side of face that
causes it to droop (main symptom)
- Difficulty closing eye on affected side
- Dry mouth
- Eye problems, such as excessive tearing or dry eye
- Loss of ability to taste
- Pain in or behind ear
- Facial numbness on affected side
- Increased sensitivity to sound
- Facial twitch
- Inability to smile or make facial expressions
- Dry eyes
- Psychological impact
- The nerve that controls muscles on one side of the face
is damaged by inflammation in most cases
- Root cause of Bell's palsy is not clear
- Most cases thought to be caused by the herpes virus that causes
chickenpox and shingles, or Epstein-Barr virus that causes mononucleosis
- HIV infection
- Herpes simplex virus
- Lyme disease
- Middle ear infection
- Diabetes mellitus
- Ramsay Hunt syndrome
Means of Confirmation
- History and physical and neurological exam to check facial
- If cause of symptoms is not clear, other tests are needed,
- Nerve conduction test for facial nerve
- Electromyography (EMG) for facial nerve
- Facial muscle weakness or total paralysis (e.g., unable
to frown) due to swollen, inflamed, or compressed facial nerve
- Drooping of eyelid and corner of mouth on the affected side ...
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