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Three adults present to a same-day vestibular triage clinic, each with disabling dizziness but with distinct histories and examination findings, including symptoms like episodic vertigo, fluctuating hearing loss, or acute prolonged vertigo. How do you approach differentiating these complex cases? What clinical clues help you distinguish among vestibular disorders and central processes presenting with similar symptoms?
Important note: This material is entirely AI-generated and has not been verified by human experts; despite stringent consensus checks, perfect accuracy cannot be guaranteed. Exercise caution — always corroborate the content with trusted references and licensed, qualified professionals, and never apply information from this content to patient care or clinical decisions without independent verification by a licensed and qualified professional in the field. Not medical advice. For educational purposes only.
VIDEO INFO
Category: Behavioral Health & Nervous System/Special Senses, Physiology, USMLE Step 1
Difficulty: Moderate – Intermediate level – Requires solid foundational knowledge
Question Type: Features
Case Type: Multi Patient
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QUESTION
A same-day vestibular triage clinic evaluates three adults with disabling dizziness.
Patient A: A 57-year-old man reports 4 months of intermittent right-sided aural fullness, a low-pitched roaring tinnitus, and fluctuating hearing that worsens before episodes of spinning vertigo lasting 1-3 hours with nausea and unsteadiness; two attacks occurred this month. Between attacks he feels normal but fatigued. Otoscopy is normal….
OPTIONS
A. Patient A, because recurrent vertigo spells lasting 20 minutes to 12 hours with ipsilateral low- to mid-frequency sensorineural hearing loss, tinnitus, and aural fullness that fluctuate across attacks fit Me nie re disease criteria.
B. Patient B, because continuous vertigo with an abnormal head-impulse test and normal audiometry is most consistent with endolymphatic hydrops of the affected ear.
C. Patient C, because a normal early diffusion-weighted MRI rules out posterior circulation stroke and makes recurrent peripheral hydrops the most likely cause.
D. Patient C, because direction-changing gaze-evoked nystagmus with a normal head-impulse test can reflect peripheral hydrops when early MRI is unrevealing of infarction.
CORRECT ANSWER
A. Patient A, because recurrent vertigo spells lasting 20 minutes to 12 hours with ipsilateral low- to mid-frequency sensorineural hearing loss, tinnitus, and aural fullness that fluctuate across attacks fit Me nie re disease criteria.
EXPLANATION
The clinical constellation in Patient A-recurrent vertigo episodes lasting 1-3 hours, ipsilateral fluctuating low- to mid-frequency sensorineural hearing loss, tinnitus, and aural fullness with normal interval examinations-fits the American Academy of Otolaryngology-Head and Neck Surgery 2020 diagnostic framework for the Menie re disease spectrum. These features reflect episodic endolymphatic hydrops with cochlear involvement, and the normal head-impulse test between attacks is typical because semicircular canal function can be preserved outside of episodes.
Patient B displays the acute vestibular syndrome with continuous vertigo, unidirectional spontaneous nystagmus that increases with gaze in the fast phase, a positive head-impulse test with corrective saccades, and normal audiometry-classic for vestibular neuritis, not Menie re disease. Patient C has central signs on the HINTS examination-normal head-impulse, direction-changing gaze-evoked nystagmus, and vertical skew-highly suggestive of posterior circulation stroke even when early diffusion-weighted MRI is normal; early false-negatives occur. Therefore, the pattern most strongly supporting Menie re disease is Patient A.
Further reading:
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