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Facial Anaesthesia (Examination (↓ absent sensation in trigeminal…
Facial Anaesthesia
Examination
Loss of corneal reflex
Weak masseter and temporalis
↓ absent sensation in trigeminal distribution
Note modality
Note which trigeminal branch
Jaw jerk
Brisk: UMN
Absent: LMN
Viva
Causes
Supranuclear
Demyelination
Infarct
SOL
Nuclear
CPA lesion: w/ other CN palsies
Lateral medullary syndrome: loss of pain and temp
Peripheral: mononeuropathy
DM, sarcoid, vasculitis
Cavernous sinus
Ophthalmic and maxillary divisions
Bilateral