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GERICLINICS

GeriQBank · Paper III · Q11

Benign paroxysmal positional vertigo — diagnosis and management

High YieldAsked ×27-mark note
Topic
Falls, Gait & Syncope
Chapter
Falls, Gait, Syncope & Dizziness
Years asked
Not recorded in the source
Frequency
Set 2× in Paper III (2009–2025)

As set in the university paper

  • How would you diagnose and manage a case suspected to have Benign Paroxysmal Positional Vertigo?

    Paper III · Falls, Gait, Balance & Dizziness · asked ×2 · 7-mark note · see in paper list

Answer framework

  1. Definition and cause — brief positional vertigo; causes; canalithiasis and cupulolithiasis; the posterior canal is commonest
  2. Clinical features in older patients — severity, fear and anxiety, an often overlooked diagnosis
  3. The Dix-Hallpike manoeuvre — technique; peripheral versus central findings
  4. Management — repositioning manoeuvres (Epley, Semont); no sedation; relapse; surgery for intractable cases; vestibular rehabilitation; the limited role of drugs; explanation
  5. Recent updates — AAO-HNSF guideline, canal conversion, network meta-analysis, modified Epley, recurrence and vitamin D, Indian relevance

An exam answer plan drawn from the detailed answer below. Use it to attempt the question first.

Detailed answer

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Attempt it firstOutline your answer as a 7-mark note before revealing it — definition, causes, evaluation, management and the geriatric angle.Reveal answer

Short revision answer

  • BPPV causes brief vertigo on assuming specific head positions — lying on one ear, bending forward, looking up. It is commonest after head injury, but in older people it is often idiopathic or follows vestibular neuritis.
  • Mechanism: canalithiasis (free otoconia acting like a plunger in the canal) or cupulolithiasis (otoconia stuck to the cupula). The posterior canal is most often affected.
  • Older patients are often terrified — attacks are sudden, with drops and vomiting — and the diagnosis is frequently missed. The only sign may be paroxysmal positional nystagmus on the Dix-Hallpike manoeuvre.
  • Dix-Hallpike: turn the head 30–45 degrees, lower the patient briskly with the head over the couch edge, watch the eyes, then repeat on the other side. Do it right first time, because findings fatigue on repetition.
  • Peripheral pattern: latency 2–20 seconds, vertigo lasting under one minute, adaptation within 50 seconds, fatigue on repetition, rotatory nystagmus towards the undermost ear, vertigo always present. Central pattern: no latency, persistent, no fatigue, variable direction — investigate.
  • Treatment is particle repositioning: the Epley manoeuvre cures 80–85% at the first attempt and a further 10% at the second; Semont is an alternative. No sedation is needed, and it works as well in older people. Repeat it for relapses; consider canal plugging or singular neurectomy if intractable.
  • Add vestibular rehabilitation, given the high recurrence rate. Drugs have little role: avoid prochlorperazine, and psychotropics impair compensation. Explaining that the condition is benign is part of treatment.
  • AAO-HNSF guideline: Dix-Hallpike for the posterior canal; if negative, the supine roll test for the lateral canal (horizontal nystagmus); no routine imaging or vestibular tests; no post-procedure restrictions; no routine vestibular suppressants; reassess within one month. Lateral canal BPPV can follow an Epley (canal conversion).
  • A 2025 network meta-analysis ranks Epley first; Brandt-Daroff exercises are inferior. Holding positions for about 5 minutes raised first-attempt success from 63% to 85%.
  • BPPV recurs in 10–30% within a year, more with osteoporosis and low vitamin D, so correct vitamin D and calcium. It is the commonest treatable cause of dizziness in older adults and curable in a single visit.

Condensed by GeriClinics from the detailed answer below, with no new facts added.

15–20 High-Yield Points (Textbook)

A. Definition and Cause

1.

BPPV is characterised by momentary, short-lived episodes of vertigo occurring on assuming specific head positions, particularly with neck extension, and typically appearing when lying down on one ear, bending forward, or looking up.

2.

It is the most common clinical syndrome after head injury, but is also seen in older people as an idiopathic disorder or secondary to vestibular neuritis. Even trivial head injury can cause it, with onset days or weeks later.

3.

Canalithiasis is the accepted mechanism and explains most of the features: free-floating particles (otoconia) within a semicircular canal. With a change of head position the cluster of particles moves in the canal and has a “plunger” effect within the narrow canal, deflecting the cupula and causing a brief paroxysm of vertigo and nystagmus.

4.

Cupulolithiasis is the alternative mechanism, in which the free-floating particles adhere to the cupula of a semicircular canal.

5.

Although BPPV can affect each of the semicircular canals, posterior canal involvement is the most common.

B. Clinical Features in the Older Patient

6.

The vertigo is particularly severe, and the older patient is frequently extremely afraid, because the attacks are very sudden and may cause a drop to the ground and vomiting.

7.

This leads to anxiety — partly fear of embarrassment if an attack happens in a public place, and partly fear of being incapacitated at home, unable to reach help.

8.

The diagnosis is frequently overlooked. The clinician often sees only an extremely anxious older patient who finds it difficult to explain such brief yet severe symptoms.

9.

Frequently the only abnormal clinical sign is benign positional nystagmus of paroxysmal type on the Dix-Hallpike manoeuvre.

C. The Dix-Hallpike Manoeuvre

10.

Technique: the patient sits close to the top end of a flat examination couch. The head is held firmly between the examiner’s hands and turned 30–45 degrees to the right or left. The patient is then carried rapidly backward with the head over the edge of the couch, and the eyes are carefully observed. If nystagmus develops it is observed until it disappears, or for two to three minutes until it is clear that it is persistent. The patient is returned upright and the procedure repeated on the other side.

11.

The manoeuvre must be performed briskly and correctly at the first attempt, because symptoms and signs adapt and fatigue on repeated testing.

12.

Peripheral (benign paroxysmal) findings: after a latent period of a few seconds in the head-back position, severe vertigo develops lasting less than one minute, during which the patient may be extremely distressed and nauseated. The nystagmus is rotatory and directed toward the undermost ear. Feature Benign paroxysmal type (peripheral) Central type Latent period 2–20 seconds None Adaptation Disappears in 50 seconds Persists Fatigability Disappears on repetition Persists Vertigo Always present Typically absent Direction of nystagmus To the undermost ear Variable Incidence Relatively common Relatively uncommon Cases that do not fit either category, and all “central” patterns, should be investigated for neurological disease.

D. Management

13.

Positional (particle repositioning) manoeuvres are the treatment. Specific movements of the head allow the offending debris in the semicircular canal to be moved by gravitation into the utricle.

14.

The Epley manoeuvre is the most commonly used manoeuvre for posterior canal BPPV. It is effective in 80–85% of patients at the first attempt and in a further 10% at a second attempt.

15.

Semont’s manoeuvre is another specific manoeuvre for posterior canal BPPV.

16.

Pre-treatment sedation is not required except for the most anxious of patients, and the manoeuvre is as effective in older people as in younger people.

17.

Relapses may occur, and the manoeuvre should then simply be repeated.

18.

In the small percentage in whom particle repositioning fails, and in intractable cases with severe disabling symptoms, plugging of the posterior semicircular canal, or section of the posterior and ampullary (singular) nerve, can be considered.

19.

A combination of canalith repositioning manoeuvre and vestibular rehabilitation improves benign positional vertigo in the elderly. Although the repositioning manoeuvre is the most effective treatment, vestibular rehabilitation can be added to improve results, particularly given the high recurrence rate of positional vertigo.

20.

Drugs have a very limited role. Vestibular sedatives such as cinnarizine are of value in acute vertigo but have a very limited role in chronic vestibular syndromes. Prochlorperazine should be avoided because of the rare but irreversible syndrome of extrapyramidal dysfunction. Psychotropic drugs should be given only for specific psychiatric indications, as they interfere with vestibular compensation.

21.

Because the condition causes drop attacks, vomiting and profound anxiety in older people, a clear explanation of the benign nature of the condition is an essential part of treatment.

Latest Updates (2023–Present)

The AAO-HNSF Clinical Practice Guideline: BPPV (Update) remains the reference standard and its key action statements are examinable: diagnose posterior canal BPPV with the Dix-Hallpike test; if Dix-Hallpike is negative but BPPV is suspected, perform the supine roll test for lateral (horizontal) canal BPPV — here the nystagmus is predominantly horizontal, geotropic or apogeotropic, in contrast to the upbeating torsional nystagmus of posterior canal BPPV.

Guideline recommendations that differ from older teaching: do not routinely order imaging or vestibular testing when the diagnosis is clear; treat posterior canal BPPV with a canalith repositioning procedure; do not impose post-procedural postural restrictions; do not routinely use vestibular suppressants such as antihistamines and benzodiazepines; observation with follow-up is an acceptable initial option; vestibular rehabilitation may be offered; and reassess within one month to confirm resolution.

The guideline also mandates assessment for factors that modify management — impaired mobility or balance, CNS disorders, lack of home support and increased risk of falling — which is precisely the older Indian patient. Canal conversion is now formally described: lateral canal BPPV may appear after an Epley manoeuvre performed for posterior canal BPPV, as debris migrates from the posterior into the lateral canal. Recognise it rather than assuming treatment failure.

A 2025 network meta-analysis of 20 randomised trials (2,089 patients) for posterior canal BPPV ranked the Epley manoeuvre highest for overall effectiveness (SUCRA 97.84%), significantly better than Semont, Brandt-Daroff and control. Epley and Semont were both superior to other interventions for cure rate. Brandt-Daroff exercises are inferior and should not be first-line.

Modified Epley technique: a 2023 randomised trial found that prolonging the healthy-side lying and final head-bowed positions to about 5 minutes raised first-attempt success from 63% to 85%, achieved 100% success after two attempts and prevented canal switching; a 2024 simulation study supported longer hold times and a modified rotation angle.

Recurrence and bone health: BPPV recurs in about 10–30% within a year, more with older age, head trauma, osteoporosis and low vitamin D. A 2024 systematic review and meta-analysis confirmed a higher prevalence of osteoporosis in BPPV patients, and randomised evidence supports vitamin D and calcium supplementation in patients with recurrent BPPV and low serum vitamin D to reduce recurrence. This links BPPV directly to fracture prevention in the older Indian patient, in whom vitamin D deficiency is near-universal. Practical Indian relevance: BPPV is the commonest treatable cause of dizziness in older adults, needs no equipment and no investigation, and is curable in a single outpatient visit — making Dix-Hallpike and Epley among the highest-yield skills in a resource-limited geriatric clinic.

Current Practice Update

Issue Textbook position Current position

Canal involved Posterior canal most common; Dix-Hallpike is the Same, plus mandatory supine roll test for lateral test canal if Dix-Hallpike negative; recognise canal conversion after Epley Post-procedure restrictions Not addressed Explicitly not recommended — no need to sleep upright or avoid head movement Drugs Cinnarizine for acute vertigo only; avoid Stronger: do not routinely use vestibular prochlorperazine suppressants at all in BPPV — they delay compensation and increase falls Choice of manoeuvre Epley most common; Semont an alternative 2025 network meta-analysis: Epley ranks first (SUCRA 97.8%); Brandt-Daroff clearly inferior.

Modified Epley with 5-minute holds improves first-attempt success Recurrence prevention Repeat the manoeuvre; add vestibular Same, plus check and correct vitamin D and rehabilitation calcium, and assess for osteoporosis Follow-up Not specified Reassess within one month to document resolution or persistence Exam One-Liners Mechanism: canalithiasis (free otoconia) or cupulolithiasis (otoconia adherent to cupula); posterior canal commonest. Dix-Hallpike: head turned 30–45°, rapid backward to head-hanging position.

Peripheral nystagmus: latency 2–20 s, lasts <1 min, adapts in 50 s, fatigues, rotatory towards the undermost ear, vertigo always present.

Central: no latency, persists, does not fatigue, variable direction, vertigo typically absent. Epley cures 80–85% at first attempt, a further 10% at second attempt; equally effective in the elderly. No sedation needed; no post-procedure postural restrictions; no vestibular suppressants. Lateral canal BPPV: supine roll test, horizontal nystagmus.

Intractable cases: posterior canal plugging or singular neurectomy.

Correct vitamin D to reduce recurrence; reassess at one month.

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