When are audiography and auditory evoked potentials (AEPs) indicated in the diagnosis of Bell palsy (idiopathic facial paralysis) (IFP)?

Updated: Jun 14, 2019
  • Author: Danette C Taylor, DO, MS, FACN; Chief Editor: Selim R Benbadis, MD  more...
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Answer

If hearing loss is suspected, audiography and auditory evoked potentials (AEPs) should be pursued once an underlying structural lesion has been excluded. Typically, the hearing threshold is not affected by Bell palsy. Impedance testing may reveal an absent or diminished stapedial reflex because of paresis of the stapedial branch of the facial nerve.


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