What is the role of a nerve excitability test 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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The nerve excitability test determines the threshold of the electrical stimulus needed to produce visible muscle twitching. This test is technically challenging and has very limited clinical availability.

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