What is the role of audiometry, ENG and EDX studies in the diagnosis of Ramsay Hunt syndrome?

Updated: Jul 16, 2018
  • Author: Sombat Muengtaweepongsa, MD, MSc; Chief Editor: Niranjan N Singh, MBBS, MD, DM, FAHS, FAANEM  more...
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Audiometry usually reveals sensorineural hearing loss in high frequency ranges. [11]

Unilateral caloric weakness may be present on electronystagmography (ENG).

Electrodiagnostic methods, such as facial motor nerve conductions studies (electroneurography), electromyography of facial innervated muscles, the blink reflex, and nerve excitability testing, could add information regarding the extent of seventh cranial nerve (CN VII) involvement, as well as prognostic factors. [6, 20, 21]

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