To which specialist should a 74-year-old woman with a three-year history of left-sided hearing loss and vertigo be referred?

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Referral for 74-Year-Old Woman with 3-Year History of Left-Sided Hearing Loss and Vertigo

This patient should be referred to an otolaryngologist (ENT specialist) for comprehensive evaluation of asymmetric hearing loss with vertigo, as this presentation requires exclusion of retrocochlear pathology such as vestibular schwannoma or other treatable causes. 1

Why Otolaryngology Referral is Indicated

Asymmetric hearing loss is a red flag requiring specialist evaluation. The 2024 AAO-HNS guideline explicitly states that clinicians should evaluate and treat or refer patients with significant asymmetric hearing loss for further workup, as this pattern is atypical of age-related hearing loss and warrants investigation for other pathology 1. The combination of unilateral hearing loss with vertigo over 3 years raises concern for:

  • Vestibular schwannoma (acoustic neuroma) – the standard workup for asymmetric sensorineural hearing loss includes MRI of the internal auditory canals to exclude retrocochlear pathology 1
  • Ménière's disease – characterized by fluctuating hearing loss, vertigo episodes lasting 20 minutes to 12 hours, and aural symptoms (tinnitus, fullness) 1
  • Other inner ear pathology requiring medical or surgical management 1

What the Otolaryngologist Will Provide

The otolaryngologist will perform a comprehensive evaluation including 1:

  • Complete head and neck examination with otoscopy to assess the external auditory canal, tympanic membrane, and middle ear structures 1
  • Comprehensive audiometric testing to document the degree and pattern of hearing loss, including pure tone averages and word recognition scores 1
  • Vestibular assessment to characterize the vertigo pattern and distinguish peripheral from central causes 1
  • Ordering appropriate imaging – MRI of the brain and internal auditory canals with and without contrast is indicated for chronic recurrent vertigo with unilateral hearing loss to exclude vestibular schwannoma and enable definitive diagnosis 1

Critical Diagnostic Considerations

The 3-year duration makes certain acute conditions less likely but does not exclude serious pathology:

  • Age-related hearing loss should be symmetric – asymmetry requires investigation 1
  • Vestibular schwannomas can present with slowly progressive unilateral hearing loss and vestibular symptoms over years 1
  • Ménière's disease typically presents with episodic vertigo (20 minutes to 12 hours) with fluctuating hearing loss, but chronic presentations can occur in elderly patients 1
  • Chronic vestibular symptoms lasting years may also represent medication side effects, posttraumatic vertigo, or other treatable causes 1

Common Pitfall to Avoid

Do not assume this is simply age-related hearing loss because of the patient's age. While presbycusis is common in this age group, it presents as bilateral symmetric high-frequency hearing loss 1. The unilateral presentation with vertigo demands specialist evaluation regardless of age 1.

Timing of Referral

This referral should be made promptly but is not an emergency unless red-flag features develop, such as 1:

  • Sudden worsening of hearing loss
  • New severe headache
  • Focal neurological deficits
  • Inability to stand or walk
  • New downbeating or direction-changing nystagmus

The otolaryngologist has the expertise to perform the necessary diagnostic workup, interpret specialized testing, and provide medical or surgical management as indicated 1.

References

1
Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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