What is the recommended treatment for benign paroxysmal positional vertigo (BPPV), including the role of paracetamol?

Treatment of Benign Paroxysmal Positional Vertigo (BPPV)

Paracetamol (acetaminophen) has no role in the treatment of BPPV and should not be used. The definitive treatment for BPPV is canalith repositioning procedures (CRPs), specifically the Epley maneuver for posterior canal BPPV, which should be performed immediately upon diagnosis 1.

Primary Treatment: Canalith Repositioning Procedures

Clinicians should treat posterior canal BPPV with the Epley maneuver (canalith repositioning procedure) as first-line therapy 1. This is a level 1 evidence-based treatment that directly addresses the pathophysiology of BPPV by moving displaced otoconia (calcium crystals) out of the semicircular canal back into the vestibule 1, 2.

Efficacy of the Epley Maneuver

The evidence is compelling:

• Patients treated with CRP have 6.5 times greater chance of symptom improvement compared to controls (OR 6.52; 95% CI 4.17-10.20) 1
• Complete resolution of vertigo occurs significantly more often with CRP versus sham maneuvers (OR 4.42; 95% CI 2.62-7.44) 1
• Conversion from positive to negative Dix-Hallpike test is 9.6 times more likely with CRP (OR 9.62; 95% CI 6.0-15.42) 1
• A single Epley maneuver is more than 10 times more effective than a week of Brandt-Daroff exercises (OR 12.38; 95% CI 4.32-35.47) 1
• By day 7, the Dix-Hallpike test is negative in 80.5% of CRP-treated patients versus only 25% with exercises 1

How to Perform the Epley Maneuver

The stepwise sequence 1:

1. Position patient upright with head turned 45° toward the affected ear
2. Rapidly lay patient back to supine head-hanging 20° position; maintain 20-30 seconds
3. Turn head 90° toward the unaffected side; hold 20 seconds
4. Turn head another 90° (patient moves to lateral decubitus, face-down position); hold 20-30 seconds
5. Bring patient to upright sitting position, completing the maneuver

What NOT to Use

Vestibular Suppressant Medications Are Inappropriate

The 2017 AAO-HNS guideline explicitly recommends AGAINST routinely treating BPPV with vestibular suppressant medications such as antihistamines (meclizine) and benzodiazepines 1. This is a strong recommendation because:

• These medications do not address the underlying mechanical problem
• They have side effects without therapeutic benefit for BPPV 3
• Current ED management commonly uses meclizine inappropriately, which is not guideline-concordant 3

Paracetamol Has No Role

Paracetamol (acetaminophen) is an analgesic/antipyretic medication 4 with no mechanism of action relevant to BPPV. The vertigo in BPPV is caused by displaced otoconia creating abnormal vestibular signals—not pain or inflammation that paracetamol could address. Do not prescribe paracetamol for BPPV treatment.

Alternative Treatment Options

Semont Maneuver (Liberatory Maneuver)

The Semont maneuver is an alternative CRP with comparable efficacy to the Epley maneuver 2. The choice between Epley and Semont depends on:

• Clinician preference and training
• Failure of the previous maneuver
• Patient movement restrictions 2

Vestibular Rehabilitation

Vestibular rehabilitation (self-administered or clinician-guided) may be offered as an option 1, though it is significantly less effective than a single Epley maneuver 1.

Observation with Follow-up

Observation may be offered as initial management 1, as BPPV can spontaneously resolve in approximately 20% of patients by 1 month and up to 50% at 3 months 1. However, this approach delays symptom relief and exposes patients to fall risk and impaired quality of life 1.

Diagnostic Approach

Before treatment, confirm the diagnosis with the Dix-Hallpike maneuver 1:

• This is the gold standard test for posterior canal BPPV (85-95% of BPPV cases) 1
• Sensitivity 82%, specificity 71% among specialty clinicians 1
• Look for characteristic findings: latency period (5-20 seconds), mixed torsional-vertical nystagmus, symptoms resolving within 60 seconds 1
• The affected ear is the one that produces positive findings when placed in the dependent position 1

What NOT to Order

Do not routinely order 1:

• Brain imaging (MRI/CT) in the absence of additional signs/symptoms inconsistent with BPPV
• Vestibular function testing for patients meeting diagnostic criteria without additional vestibular signs
• Laboratory tests (CBC, chemistry panels) 1

These increase costs, radiation exposure, and ED length of stay without improving outcomes 3.

Management of Treatment Failures

If the Epley maneuver fails:

• Repeat the maneuver at a subsequent visit
• Consider horizontal canal BPPV (5-15% of cases) requiring different maneuvers (Gufoni maneuver) 1, 2
• Investigate for multiple canal involvement or associated vestibular pathology 1, 2
• Consider recurrent BPPV (may warrant vestibular function testing) 1
• Evaluate for comorbidities: migraine, persistent postural perceptual dizziness, vitamin D deficiency 2

Key Clinical Pitfalls

• Do not prescribe meclizine, benzodiazepines, or paracetamol as primary BPPV treatment
• Do not order brain imaging unless red flags for central pathology exist
• Do not repeat Dix-Hallpike multiple times during the same visit to demonstrate fatigability—this unnecessarily provokes vertigo and may interfere with immediate treatment 1
• Do not assume negative Dix-Hallpike rules out BPPV—negative predictive value is only 52% in primary care; consider repeating at a separate visit 1