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ENT Neurology Emergency Medicine Strong — AAO-HNSF CPG 2017

Dix-Hallpike Test Interpretation / BPPV Assessment

Clinical assessment and diagnostic criteria for Benign Paroxysmal Positional Vertigo (BPPV) based on Dix-Hallpike findings.

Score interpretation

No Positional Nystagmus — Dix-Hallpike Negative 0

Posterior canal BPPV is not confirmed.

→ Repeat with the other ear down if not done. If the history suggests BPPV, perform the supine roll test for lateral canal BPPV; otherwise consider other causes of dizziness (vestibular migraine, vestibular neuritis, Ménière's disease, central causes).

Horizontal Nystagmus — Test for Lateral Canal BPPV 1

Horizontal positional nystagmus is not posterior canal BPPV.

→ Perform the supine roll test (AAO-HNS 2017 statement 1b): geotropic or apogeotropic horizontal nystagmus indicates lateral canal BPPV — treat with a lateral canal repositioning manoeuvre. Atypical findings: consider a central cause.

Atypical Findings — BPPV Criteria Not Met 2

Torsional upbeating nystagmus without every typical feature (positional history, latency, resolution within 60 s, matching vertigo).

→ Do not label as BPPV yet. Full neurological and eye-movement examination; consider central positional nystagmus (posterior fossa lesion) — urgent imaging and neurology review if central features (AAO-HNS 2017).

Posterior Canal BPPV — Epley Indicated 3

Meets the AAO-HNS 2017 diagnostic criteria for posterior canal BPPV.

→ Canalith repositioning (Epley manoeuvre) toward the affected ear. Imaging and vestibular testing are not needed for typical BPPV; vestibular suppressants are not routinely recommended. Reassess within 1 month; refer to ENT or vestibular physiotherapy if refractory.

Interpretation bands for the BPPV / Dix-Hallpike. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.