Vertigo test: How to perform and interpret the Dix-Hallpike

Key takeaways

The Dix-Hallpike test is the gold-standard vertigo test for diagnosing BPPV, confirmed by the AAO-HNS clinical practice guideline

A positive result shows latent-onset upbeat-torsional nystagmus, while downbeat nystagmus signals central pathology requiring urgent escalation

The HINTS exam (Head Impulse, Nystagmus, Test of Skew) differentiates peripheral from central vertigo at the bedside and should not be confused with Dix-Hallpike

Pabau’s client record software and digital forms streamline vestibular test documentation and ICD-10 coding for BPPV (H81.1)

Most clinicians see vertigo several times a week. Yet a significant proportion of those presentations are mismanaged because the wrong vertigo test is chosen at the wrong time. The result is unnecessary MRI referrals, missed BPPV diagnoses, and stroke-mimic cases sent home without imaging. A bedside assessment of vertigo review published in the PMC/NIH literature found that structured physical examination consistently outperforms imaging alone. This applies to the initial triage of acute vestibular presentations. This guide covers the core vertigo test battery: how to perform and interpret the Dix-Hallpike test, and when to apply the HINTS exam instead. It also covers how to document findings accurately in clinical practice.

What is a vertigo test and when should clinicians order one?

A vertigo test is any structured clinical maneuver or diagnostic study designed to identify the cause of a patient’s dizziness or sense of movement. Vertigo is a symptom, not a diagnosis.

The presenting complaint can point to any of the following, and the management pathway differs completely depending on which one it is:

• Benign paroxysmal positional vertigo (BPPV)
• Vestibular neuritis
• Meniere’s disease
• Posterior circulation stroke
• Cerebellar lesion

Order a formal vertigo test when any of the following apply:

• Episodic dizziness triggered by head position changes (classic BPPV indicator)
• Acute sustained vertigo lasting hours or days (consider vestibular neuritis or stroke)
• Vertigo with concurrent hearing loss or tinnitus (consider Meniere’s disease)
• Vertigo with headache, diplopia, dysarthria, or ataxia (red flags for central pathology)
• Unexplained falls or imbalance in older adults where vestibular dysfunction is suspected

In GP practice workflows and primary care, the Dix-Hallpike test is almost always the appropriate starting point for positional symptoms. For acute continuous vertigo, the HINTS exam takes priority. Knowing which tool to reach for first saves referrals and prevents harm.

How to perform the Dix-Hallpike maneuver: Step-by-step

The Dix-Hallpike test is the gold-standard bedside vertigo test for posterior canal BPPV, endorsed by the AAO-HNS Clinical Practice Guideline on BPPV (2017). It works by provoking displacement of free-floating otoconia (calcium carbonate crystals) within the posterior semicircular canal, producing characteristic nystagmus that confirms the diagnosis.

1. Explain the procedure. Warn the patient they may briefly experience intense spinning. Obtain verbal consent. Screen for cervical spine instability or severe carotid stenosis, both of which are contraindications.
2. Seat the patient centrally on the examination table so they can lie flat without their head hanging off the end.
3. Turn the head 45 degrees to the side being tested. Keep this rotation throughout the movement.
4. Lower the patient rapidly to the supine position with the head extended approximately 20 degrees below the horizontal (the Hallpike position). Support the head throughout.
5. Observe the eyes immediately. Watch for nystagmus onset. Note the latency (typical: 5-20 seconds), direction, and whether it fatigues with repeated testing.
6. Return the patient to sitting and observe for a reversal of nystagmus direction, which supports a peripheral cause.
7. Repeat on the opposite side after a 1-2 minute rest, or sooner if the first side was negative.

The entire maneuver takes under three minutes. The most common technical error is insufficient head extension, which places the posterior canal in the wrong plane and produces a false-negative result.

Interpreting Dix-Hallpike results: Positive vs negative findings

Result interpretation determines whether the patient gets treated at the bedside or referred for further investigation. A positive and a negative result carry very different clinical implications.

Reading nystagmus patterns

Nystagmus is the key observable sign. The direction, latency, and fatigability of eye movement distinguish peripheral from central pathology. Use this reference table during examination:

Positive result: Upbeat-torsional nystagmus with the features above confirms posterior canal BPPV. Proceed to the Epley maneuver immediately. Negative result: Does not rule out BPPV. Horizontal canal BPPV requires the supine roll test (Dix-Hallpike is not sensitive for this variant). Repeat with optimal positioning before concluding negative. Downbeat nystagmus: This is a red flag for central pathology. Do not treat as BPPV. Refer for urgent neurological assessment and MRI, particularly to exclude posterior fossa lesion or cerebellar infarct.

Peripheral vs central vertigo: How bedside findings guide your decision

The single most consequential clinical decision in the acute vertigo consultation is distinguishing peripheral from central pathology. Peripheral vertigo (inner ear origin) is almost always benign and treatable at the bedside. Central vertigo (brainstem or cerebellum) can indicate posterior circulation stroke, a condition that kills or permanently disables patients who are sent home misdiagnosed.

Clinicians documenting acute neurological presentations alongside vestibular cases need accurate diagnostic coding too. Applying the right intraparenchymal hemorrhage ICD-10 codes in practice management software ensures accurate billing and audit trails for high-acuity referrals. Always use the most current ICD-10-CM tabular list for coding verification.

The HINTS exam: Assessing acute continuous vertigo

The Dix-Hallpike test diagnoses positional vertigo. The HINTS exam serves an entirely different purpose: it identifies posterior circulation stroke in patients with acute continuous vertigo (the acute vestibular syndrome). Mixing up when to use each test is one of the most dangerous errors in acute vestibular assessment.

HINTS stands for Head Impulse, Nystagmus type, Test of Skew. The mnemonic HINTS INFARCT helps recall what each component’s positive finding means:

• Head Impulse Normal (no corrective saccade) combined with
• Nystagmus that changes direction with gaze, and/or
• Skew deviation present (vertical ocular misalignment on cover-uncover test)

This combination is a central pattern: the result is INFARCT until proven otherwise. The landmark Kattah et al. (2009) HINTS study, published in Stroke, showed that HINTS outperforms early MRI when trained examiners use it. It detects posterior circulation stroke more reliably in the acute vestibular syndrome. Sensitivity depends on examiner training: refer to specialist assessment if findings are ambiguous.

Use structured clinical evaluation templates as a model for how to pre-structure your HINTS exam documentation in consultation notes, ensuring each component is recorded systematically.

Other vertigo tests in the diagnostic workup

When bedside tests yield inconclusive results, or when a vestibular cause is confirmed but the severity warrants quantification, specialist vestibular laboratory testing provides objective measures. The NIDCD’s balance disorders information outlines the range of tests available to patients when primary care referral is indicated.

VNG and VEMP interpretation should always be performed by trained audiologists or vestibular physiologists. In physical therapy EMR settings where vestibular rehabilitation is delivered, posturography results inform functional goal-setting and document progress for insurer reporting.

What happens after a positive Dix-Hallpike?

A confirmed positive Dix-Hallpike test pointing to posterior canal BPPV has a clear first-line treatment: the Epley maneuver (canalith repositioning procedure). The AAO-HNS guideline recommends it as the primary intervention. The maneuver guides displaced otoconia from the posterior canal back into the utricle through a sequence of four head positions.

• Resolution rates after a single Epley maneuver are high in posterior canal BPPV cases. Patients should be counseled that some require a repeat procedure.
• Post-Epley activity restrictions (historically recommended) are no longer supported by current evidence as a routine requirement.
• Re-test with Dix-Hallpike at follow-up (typically one to two weeks) to confirm resolution.
• Persistent or recurrent symptoms after two properly performed Epley maneuvers warrant vestibular laboratory referral and audiological assessment.

The Epley maneuver requires clinical training and carries a small risk in patients with cervical spine pathology or severe carotid stenosis. It should not be attempted without proper preparation for these contraindications.

Can you test for vertigo at home?

Patients frequently arrive having attempted a self-administered Dix-Hallpike based on a YouTube video. A modified version can be performed at home, but it has limitations patients need to understand before acting on the result.

What patients can reasonably do at home:

• Identify whether symptoms are positional (triggered by lying down, rolling over, or looking up)
• Attempt a simplified Dix-Hallpike with a helper using a bed instead of an examination table
• Track the side that consistently provokes symptoms to guide clinical assessment

What home testing cannot do:

• Observe nystagmus (requires a trained examiner or Frenzel lenses)
• Differentiate peripheral from central causes
• Safely perform the Epley maneuver in patients who have not been screened for contraindications

Advise patients who report a positive self-test to attend for formal clinical assessment before self-treating. For a detailed framework on supporting patient compliance with follow-up instructions, pre-appointment communication templates can reinforce the message before arrival. Any patient who describes sudden-onset vertigo with headache, double vision, or difficulty speaking should present urgently, not manage at home.

How Pabau streamlines vestibular documentation and follow-up

Accurate documentation of vestibular assessment is a clinical and billing requirement. Every vertigo test encounter needs three components documented:

1. Test performed and side tested (e.g. “Dix-Hallpike performed bilaterally, right side positive”)
2. Nystagmus characteristics observed (latency, direction, duration, fatigability)
3. ICD-10-CM code applied: H81.10 (BPPV, unspecified ear), H81.11 (right), H81.12 (left), or R42 (dizziness and giddiness) when BPPV is not yet confirmed

Pabau’s client record software supports structured consultation notes with customizable fields for clinical examination findings. Practitioners can pre-build a vestibular assessment template that prompts for each component. Combined with digital forms, intake questionnaires can capture the patient’s symptom history (onset, triggers, associated hearing symptoms) before the appointment. This saves consultation time for the physical examination.

For practices with high documentation volumes, Pabau Scribe, our AI medical scribe, transcribes spoken findings into the client record during the consultation. This cuts the note-writing workload without sacrificing accuracy.

The guidance in writing safer clinical notes outlines documentation principles for vestibular examination records. It covers how to describe negative findings clearly, protecting the practice against liability.

Practices using structured digital note templates also cut errors in their medical forms workflow. This matters most when vestibular findings drive referrals or treatment plans.

Streamline your vestibular consultations with Pabau

Pabau lets your team capture Dix-Hallpike findings, HINTS exam components, and ICD-10 codes in structured consultation notes. Document once, bill accurately, and track outcomes across follow-up appointments without duplicating effort.

Book a demo

Conclusion

The Dix-Hallpike test remains the cornerstone bedside test for diagnosing BPPV, but it only works when applied to the right presentation. Acute continuous vertigo needs the HINTS exam, and red-flag nystagmus patterns need urgent escalation. The clinical skill lies in choosing the right test and interpreting findings precisely. Documentation then protects both the patient and the practice.

Pabau’s structured consultation notes and client record tools help your team capture Dix-Hallpike and HINTS findings. They link findings to the correct ICD-10 code and track follow-up outcomes across appointments. To see how Pabau handles vestibular consultation workflows, book a demo.

Continue your research

Need a template for pre-appointment symptom capture? Spa intake form template demonstrates how to structure pre-consultation health questionnaires that front-load the clinician’s assessment.

Looking to improve how complex consultation notes are written? SOAP notes guide for clinical documentation covers the principles for structuring examination findings consistently.

Managing a multi-specialty practice with vestibular and physiotherapy services? Physiotherapy clinic management software guide covers workflow tools relevant to vestibular rehabilitation teams.

Frequently asked questions