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Isolated deafness in multiple sclerosis patients.

Santiago Fernández-Menéndez1, Laura Redondo-Robles1, Rocío García-Santiago1

  • 1Department of Neurology, University Hospital of León, León, Spain.

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Sensorineural hearing loss is an uncommon symptom in multiple sclerosis (MS) patients. This study presents three cases, highlighting demyelinating disorders and partial hearing recovery in MS patients.

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Area of Science:

  • Neurology
  • Otolaryngology
  • Neuro-immunology

Background:

  • Multiple sclerosis (MS) infrequently presents with isolated cranial nerve involvement.
  • Deafness is a rare manifestation in patients diagnosed with MS.

Observation:

  • This study reviewed sensorineural hearing loss (SNHL) episodes in MS patients over five years.
  • Three cases of SNHL in MS patients were evaluated by otolaryngologists.
  • Eighth cranial nerve lesions were identified in one case; others showed no direct lesion.

Findings:

  • Brainstem auditory evoked potentials indicated retrocochlear demyelinating disorder in two MS patients.
  • All presented MS patients with SNHL experienced at least partial hearing recovery.
  • SNHL in MS can occur without a visible lesion at the cranial nerve root-entry zone.

Implications:

  • Highlights SNHL as an uncommon but potential neurological symptom in MS.
  • Suggests the utility of auditory evoked potentials in diagnosing retrocochlear pathology in MS.
  • Emphasizes the possibility of hearing function recovery in MS-related SNHL.