Facial paralysis: Difference between revisions
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==Clinical Features== | ==Clinical Features== | ||
[[File:Bell's palsy.png|thumb|Right-sided peripheral facial nerve palsy with inability to wrinkle the forehead and nose, unequal lid fissures, and inability to lift the corner of the mouth.]] | [[File:Bell's palsy.png|thumb|Right-sided peripheral facial nerve palsy with inability to wrinkle the forehead and nose, unequal lid fissures, and inability to lift the corner of the mouth.]] | ||
[[File:Bellspalsy.jpg|thumb|A person attempting to show his teeth and raise his eyebrows with Bell's palsy on his right side; notice how the forehead is NOT spared).]] | |||
===Central Process=== | ===Central Process=== | ||
* Forehead "sparing" or normal muscle tone of the forehead | * Forehead "sparing" or normal muscle tone of the forehead |
Revision as of 16:24, 3 February 2020
Background
- Key to distinguish between central and peripheral facial nerve palsy
Causes
- Central
- Peripheral
- Idiopathic (Bell's palsy)
- Lyme disease
- Varicella-zoster
- HSV
- Facial trauma
Clinical Features
Central Process
- Forehead "sparing" or normal muscle tone of the forehead
Peripheral Process
- Weakness of forehead muscles
Central and Peripheral
- Unable to close eye
- Loss of nasolabial fold
- Asymmetric smile
Differential Diagnosis
Facial paralysis
- Bell's palsy
- CVA
- Trigeminal neuralgia
- Tick paralysis
- Herpes zoster oticus (Ramsay Hunt syndrome)
- CNS tumor
- Acoustic neuroma or other cerebellopontine angle lesions
- Meningioma
- Cerebellar pontine angle
- Facial nerve schwannoma
- Parotid
- Sarcoma
- Anesthesia nerve blocks
- Cerebral Aneurysms (vertebral, basilar, or carotid)
Evaluation
Central Process
Peripheral Process
- No labs or imaging routinely necessary
- Consider lyme serologies if endemic area
Management
Central Process
- Treat underlying pathology
Peripheral Process
- Prednisone (unless diagnosed Lyme disease)
- Empiric doxycycline if high suspicion for Lyme disease
- Consider valacyclovir for severe presentation if Lyme is negative
- Artificial tears
- Consider neurology follow-up