Confusable diagnoses · PANCE / PANRE

Benign Paroxysmal Positional Vertigo vs Vestibular Neuritis and Labyrinthitis

Written & clinically reviewed by Ryan Busch, PA-C · Updated August 2026 · Report an error

Benign Paroxysmal Positional Vertigo and Vestibular Neuritis and Labyrinthitis are easy to mix up on the boards. Here's a side-by-side comparison — presentation, workup, imaging, and first-line treatment — drawn from our full outlines.

Benign Paroxysmal Positional Vertigo vs Vestibular Neuritis and Labyrinthitis at a glance

  • Benign Paroxysmal Positional Vertigo: Brief positional vertigo from displaced otoconia in a semicircular canal; treat with canalith repositioning.
  • Vestibular Neuritis and Labyrinthitis: Acute peripheral vestibulopathy from inflammation of the vestibular nerve (neuritis) or whole inner ear (labyrinthitis), producing prolonged vertigo.

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Question 1NeurologyMedium
A 53-year-old woman has brief episodes of vertigo lasting seconds when rolling over in bed. Dix-Hallpike testing reproduces vertigo and nystagmus. Which of the following is the most appropriate treatment?
  • AOral antiviral therapy course
  • BIntratympanic gentamicin injection
  • CDaily oral diuretic therapy
  • DCanalith repositioning maneuver
Reveal answer & full explanation
Correct answer: D — Canalith repositioning maneuver
  • AOral antiviral therapy course
  • BIntratympanic gentamicin injection
  • CDaily oral diuretic therapy
  • DCanalith repositioning maneuver✓

Why Canalith repositioning maneuver is correct

  • Seconds-long positional vertigo with a positive Dix-Hallpike is benign paroxysmal positional vertigo from displaced otoconia.
  • The Epley canalith repositioning maneuver mechanically returns the debris to the utricle and is first-line.
  • It treats the mechanical cause directly without medication.

Why the others are wrong

  • Oral antiviral therapy course — Antivirals are sometimes used in vestibular neuritis, which causes sustained vertigo, not brief positional spells (wrong-vestibular-diagnosis trap).
  • Intratympanic gentamicin injection — Ablative gentamicin is reserved for refractory Ménière disease and would needlessly destroy vestibular function in BPPV (overtreatment trap).
  • Daily oral diuretic therapy — Diuretics target the endolymphatic hydrops of Ménière disease, not the otoconia of BPPV (vertigo-subtype trap).
Question 2NeurologyMedium
A 42-year-old man presents with 2 days of severe, constant spinning vertigo, nausea, and gait instability that began after an upper respiratory infection 10 days earlier. He has no hearing loss or tinnitus. Examination shows spontaneous unidirectional horizontal-torsional nystagmus that is suppressed by visual fixation, an abnormal head impulse test with a catch-up saccade toward the left, and no skew deviation. There is no dysarthria, limb dysmetria, or focal weakness. He is diagnosed with vestibular neuritis. Which of the following best explains the findings?
  • AReactivation of latent virus within the superior vestibular nerve
  • BVertebrobasilar ischemia involving the inferior cerebellar territory
  • CEndolymphatic hydrops within the membranous labyrinth of the inner ear
  • DDislodged otoconia migrating into the posterior semicircular canal
Reveal answer & full explanation
Correct answer: A — Reactivation of latent virus within the superior vestibular nerve
  • AReactivation of latent virus within the superior vestibular nerve✓
  • BVertebrobasilar ischemia involving the inferior cerebellar territory
  • CEndolymphatic hydrops within the membranous labyrinth of the inner ear
  • DDislodged otoconia migrating into the posterior semicircular canal

Why Reactivation of latent virus within the superior vestibular nerve is correct

  • Vestibular neuritis is most often attributed to reactivation of latent HSV-1 within the vestibular (Scarpa's) ganglion, or post-infectious immune-mediated demyelination, of the superior vestibular nerve.
  • The superior division supplies the horizontal and anterior semicircular canals and the utricle; selective inflammation produces unilateral vestibular hypofunction with an abnormal head impulse and fast-phase nystagmus away from the affected ear.
  • The antecedent URI, sparing of hearing, peripheral HINTS pattern (abnormal impulse, unidirectional nystagmus, no skew), and absence of brainstem/cerebellar signs all fit neuritis rather than a central cause.

Why the others are wrong

  • Vertebrobasilar ischemia involving the inferior cerebellar territory — posterior circulation infarction is the dangerous mimic of acute vestibular syndrome, but it typically leaves the head impulse test NORMAL and produces direction-changing or vertical nystagmus or a skew deviation; this patient's abnormal head impulse, unidirectional fixation-suppressed nystagmus, and absent skew are the peripheral HINTS pattern.
  • Endolymphatic hydrops within the membranous labyrinth of the inner ear — this is the mechanism of Ménière disease, which causes recurrent vertigo lasting 20 min to 12 h with low-frequency hearing loss, tinnitus, and aural fullness, not a single prolonged event with preserved hearing.
  • Dislodged otoconia migrating into the posterior semicircular canal — this is the mechanism of BPPV, producing brief (seconds) positional vertigo with a positive Dix-Hallpike, not continuous vertigo lasting days.
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Side-by-side comparison

FeatureBenign Paroxysmal Positional VertigoVestibular Neuritis and Labyrinthitis
At a glanceBrief positional vertigo from displaced otoconia in a semicircular canal; treat with canalith repositioning.Acute peripheral vestibulopathy from inflammation of the vestibular nerve (neuritis) or whole inner ear (labyrinthitis), producing prolonged vertigo.
Classic presentationDix-Hallpike maneuver provoking transient upbeat-torsional nystagmus with concurrent vertigo, latency, and fatigability.; Brief (<60 seconds) episodes of true vertigo triggered by changes in head position: rolling over in bed, getting in/out of bed, looking up, bending forward; Nausea, occasionally vomiting; Postural unsteadiness…AVS with peripheral HINTS pattern + recent URI + unidirectional nystagmus suppressed by fixation.; Sudden severe constant vertigo lasting hours to days, often peaking on day 1-2; Nausea, vomiting, profuse diaphoresis; Gait instability and falls toward the affected side; Hearing loss and tinnitus only in labyrinthitis (NOT in neuritis);…
Workup / key labsBárány Society criteria: characteristic positional vertigo + positional nystagmus on appropriate maneuver (Dix-Hallpike for posterior canal, head-roll for horizontal canal), with timing and direction consistent with the involved canal, and exclusion of central causes.; None routinely indicated for typical BPPV; Consider vitamin D and…Bárány Society 2022 (acute unilateral vestibulopathy/vestibular neuritis): acute or subacute sustained spinning or non-spinning vertigo lasting at least 24 h; spontaneous direction-fixed, generally horizontal-torsional peripheral nystagmus enhanced by removing fixation; reduced VOR function (head impulse or caloric) on the side opposite…
ImagingImaging NOT required for classic BPPV; MRI brain with brainstem/IAC views if: atypical features (continuous vertigo, neurologic findings, central nystagmus, persistent symptoms after repositioning, unilateral hearing loss, abnormal HINTS) → exclude posterior circulation stroke or cerebellopontine angle mass; HINTS exam (Head Impulse,…HINTS exam at bedside is more sensitive than early MRI for posterior stroke in AVS when performed by a trained examiner in a patient with spontaneous nystagmus; without a trained examiner, obtain MRI with DWI (CT does not rule out posterior stroke) (GRACE-3 2023); MRI brain with DWI within 24-72 h if any central features, vascular risk…
First-line treatmentCanalith repositioning maneuvers — definitive treatment:; Epley maneuver for posterior canal BPPV (success rate 60-90% per attempt; may repeat); Semont (liberatory) maneuver — alternative for posterior canal; Lempert (BBQ roll) or Gufoni maneuver for horizontal canal BPPV; Provide patient education and at-home exercises (Brandt-Daroff…Acute symptomatic relief (24-72 h only, then taper): meclizine 25-50 mg q6-8h, dimenhydrinate, promethazine, lorazepam, ondansetron; Hydration — IV fluids if vomiting precludes oral intake; Vestibular rehabilitation therapy starting within 48-72 h — improves central compensation; the single most important long-term intervention;…

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Full outlines

Benign Paroxysmal Positional Vertigo (BPPV) Vestibular Neuritis and Labyrinthitis All 514 diagnoses

Educational use only. This outline is a study aid for PA students and is not medical advice or a substitute for clinical judgment. FirstPassPA is an independent study tool and is not affiliated with, endorsed by, or sponsored by NCCPA or PAEA. PANCE® and PANRE® are registered trademarks of the National Commission on Certification of Physician Assistants; End of Rotation™ is a program of the Physician Assistant Education Association.