Quick answers
The questions patients ask most often, answered briefly. Each one links down to the section that covers it properly, so this doubles as the contents list for the page.
When is sudden dizziness an emergency rather than BPPV or migraine?
Seek urgent medical care the same day if vertigo comes with sudden hearing loss in one ear, double vision, slurred speech, facial or limb weakness or numbness, difficulty swallowing, a severe headache unlike any you have had before, fainting, or unsteadiness so bad that you cannot walk without falling. Sudden hearing loss with vertigo is treated as an emergency because the window for treatment is short. Neither BPPV nor vestibular migraine explains these features, and they need to be assessed straight away rather than at the next available appointment.
Full red-flag list and what to do →What is the quickest way to tell BPPV and vestibular migraine apart?
Timing is the single most useful clue: BPPV spins last well under a minute and only start after a change of head position, while vestibular migraine episodes usually run from several minutes to hours. Duration narrows the possibilities, but it does not settle the diagnosis on its own.
Why duration is the first question →"Karvat badalte hi chakkar aata hai" — does that always mean BPPV?
No, and this is the commonest reason the two conditions get confused, because vestibular migraine can also be triggered by a change of head position. The pattern of the spin, not just its trigger, is what separates them.
Where the two conditions overlap →Can migraine cause vertigo if I never get headaches?
Yes, in the sense that many episodes of vestibular migraine occur without a headache at that moment, though the diagnosis still requires a current or past history of migraine. Other migrainous features such as light and sound sensitivity or visual aura can appear instead.
What a vestibular migraine episode looks like →Does BPPV mean something is wrong with my brain?
No, BPPV is a mechanical problem inside the inner ear, where tiny calcium crystals move into a balance canal where they do not belong. It is intensely unpleasant but it is not a brain disorder and it is not progressive.
What BPPV actually is and how it behaves →What will the doctor actually do to work out which one it is?
A structured history about timing, triggers and associated symptoms, followed by an examination that includes positional testing such as the Dix-Hallpike manoeuvre and a look at eye movements. The examination is often more decisive than any machine.
Inside the consultation →Which test confirms vestibular migraine?
None does, because vestibular migraine is a clinical diagnosis made from the pattern of episodes after other causes have been considered. Tests are used to look for what else might be going on, not to prove migraine.
What tests can and cannot settle →Will the Epley manoeuvre help if it turns out to be migraine?
Not by itself, because repositioning manoeuvres move displaced crystals and there are no displaced crystals to move in vestibular migraine. Getting the label right is what makes the treatment work.
Why the diagnosis changes the treatment →Can I have both conditions at the same time?
Yes, and it is not unusual, which is one reason a person can be correctly treated for BPPV and still have dizziness afterwards. Having one diagnosis does not protect you from the other.
When it is both, or still unclear →Start with how long an episode lasts
If you can answer one question accurately, make it this one: how long does a single spinning episode last, from the moment it starts to the moment it stops? More diagnostic ground is covered by that answer than by any scan.
BPPV produces very short bursts. The spin begins a second or two after you move your head into a particular position, builds, and then dies away — typically inside a minute, often in twenty or thirty seconds. What lingers afterwards is queasiness and a rattled, off-balance feeling, and patients frequently report that instead of the spin, which is why the episode gets described as lasting hours when the vertigo itself did not.
Vestibular migraine works on a different clock. The internationally used criteria describe episodes of moderate or severe vestibular symptoms lasting anywhere between five minutes and 72 hours. Within that range the spread is wide: roughly a third of people have episodes lasting minutes, a third have attacks lasting hours, and a third have attacks that run over several days.
So a spin that is over before you can reach for the bedside table points one way, and a spin that is still there when you next look at the clock points another. That is a strong start, but it is only a start — because a small group of people with vestibular migraine have very brief attacks that recur every time they move their head, which lands them straight back in BPPV territory.
What BPPV is and how it behaves
Benign paroxysmal positional vertigo is a mechanical fault, not a disease of the brain or the hearing nerve. Tiny calcium carbonate crystals called otoconia normally sit on a sensor in one part of the inner ear. When some of them become dislodged and drift into a semicircular canal, the canal starts responding to gravity as well as to movement, and the brain receives a powerful false signal that you are spinning.
That mechanism explains everything about how it presents. The trigger is always a change in head position relative to gravity, which is why the classic accounts are so consistent.
The moments patients describe
- Turning over in bed, usually towards one particular side
- Lying down flat, or sitting up from lying
- Tipping the head back to reach a high shelf or during hair washing
- Bending forward to pick something off the floor or to tie a shoelace
Between those moments most people feel essentially normal, or mildly unsteady. There is no hearing loss, no ear discharge and no ringing caused by the BPPV itself. Nausea is common and vomiting happens, but pain does not belong to this picture.
BPPV is the commonest inner-ear cause of vertigo. The American Academy of Otolaryngology reports that between 17% and 42% of patients presenting with vertigo are eventually diagnosed with it, and that most cases have no identifiable cause at all. It is more frequent with increasing age, and in older adults it matters more, because the fall risk that comes with sudden positional spinning is not trivial.
It also has a habit of coming back. A course of treatment that works completely is not a guarantee against a recurrence months or years later, which is worth knowing in advance so that a return of symptoms is not read as a failed diagnosis. A separate guide covers what to expect after BPPV treatment in more detail.
What a vestibular migraine episode looks like
Vestibular migraine is migraine expressing itself through the balance system rather than, or as well as, through pain. The headache many people expect to find may be absent during the episode entirely, which is the main reason the diagnosis is missed for years.
The formal criteria, developed by the Bárány Society and carried in the appendix of the International Classification of Headache Disorders, ask for five things together. There must have been at least five episodes. There must be a current or past history of migraine, with or without aura. The vestibular symptoms must be moderate or severe and last between five minutes and 72 hours. At least half of the episodes must carry a migrainous feature. And the picture must not be better explained by something else.
What counts as a migrainous feature
Only one of these needs to be present during a given episode, and it can come before, during or after the dizziness:
- A headache with at least two of: one-sided location, throbbing quality, moderate or severe intensity, or worsening with routine physical activity
- Sensitivity to light and to sound together
- Visual aura — zigzag lines, shimmering patches or a blind spot that builds over minutes
The vestibular symptom itself is not limited to classic spinning. The criteria include spontaneous vertigo, vertigo brought on by a change of head position, vertigo provoked by large moving visual scenes such as traffic or a crowded market, vertigo during head motion, and head-motion dizziness with nausea.
Two features often reported alongside these are worth mentioning because patients rarely think to volunteer them: a long history of motion sickness, including as a child, and a background of feeling unsettled in visually busy places like supermarket aisles. Transient ear symptoms — mild fullness, brief ringing — can occur too, which is exactly where the picture starts to blur into other diagnoses.
Why the two get confused
The overlap is real and it is built into the criteria: positional vertigo is an accepted presentation of vestibular migraine. "It happens when I turn my head" is therefore not the deciding evidence that patients and, sometimes, clinicians assume it is.
Three things make the confusion worse.
Migraine and BPPV genuinely travel together
BPPV has been reported in association with migraine, alongside head trauma, other inner-ear conditions and prolonged periods spent lying in bed. Someone with a long migraine history who develops textbook positional spinning may well have both conditions rather than one.
Ménière's disease sits in the same space
Fluctuating hearing loss, tinnitus and a sense of ear fullness can occur in vestibular migraine, and migraine features are common during Ménière attacks. The distinction rests substantially on documented hearing loss — which is why an audiogram earns its place in this work-up rather than being an automatic add-on. Where the criteria for Ménière's disease are met, particularly with hearing loss confirmed on audiometry, that is the diagnosis to make.
Treatment history muddies the story
Someone who has already been given vestibular sedatives for months arrives with a symptom pattern shaped partly by the medication. Drowsiness, blunted responses and a suppressed vestibular system make both the history and the examination harder to read, which is one reason routine long-term use of these drugs is discouraged.
None of this makes the two indistinguishable. It means the distinction is made by pattern rather than by any single symptom — which brings the consultation itself into focus.
Inside the consultation
The separation is made mostly at the bedside, through a history taken in a particular order and an examination that deliberately provokes the symptom. Machines are added afterwards if a question remains.
The history that does the work
A useful vertigo history is not "describe your dizziness" — that question rarely produces a usable answer. It is a sequence of narrow ones: how long does one episode last, what exactly were you doing when it started, does the same movement reliably reproduce it, how do you feel between episodes, has your hearing changed, do you get headaches now or did you in the past, are you sensitive to light and sound during an episode, and were you a car-sick child.
Bring your medicines. Several classes of drug cause or worsen dizziness, and a medication review sometimes explains more than any test.
Positional testing
The Dix-Hallpike manoeuvre is the standard test for posterior canal BPPV. You are moved from sitting to lying with the head turned to one side and the neck slightly extended, and the examiner watches your eyes. Posterior canal BPPV is diagnosed when this provokes vertigo together with a characteristic torsional, up-beating eye movement. The manoeuvre is repeated on the other side if the first is negative. If the history fits BPPV but this test shows horizontal nystagmus or none at all, a supine roll test is used to check the lateral canal.
The detail that separates the conditions is not just whether the test provokes symptoms but what the eyes do. BPPV produces a nystagmus with a short delay before onset, a rise and fall, a direction that matches the canal involved, and a tendency to fatigue on repetition. Positional nystagmus in vestibular migraine typically behaves differently — often persisting for as long as the position is held rather than building and settling.
The rest of the examination
Eye movements are checked for patterns that do not fit an inner-ear cause. The ears are examined, at HealthNest under a microscope, since wax, a perforation or middle-ear disease changes both the interpretation and what testing is safe. Balance, gait and, when relevant, neurological signs are assessed.
A positive Dix-Hallpike in a patient whose story fits BPPV is usually enough. When the story and the examination disagree, that is the point at which tests start earning their place.
What tests can and cannot settle
There is no test that confirms vestibular migraine, and in straightforward BPPV there is no test that improves on a properly performed positional manoeuvre. Testing is for the cases in between, and for excluding the things that would change management.
Guideline advice on this is unusually direct. In a patient who meets the diagnostic criteria for BPPV, and who has no additional signs or symptoms inconsistent with BPPV, imaging should not be obtained and vestibular testing should not be ordered. The reasoning is practical: unnecessary testing delays a treatment that can often be delivered the same day, and adds cost without adding information.
When testing does help
| Test | What it may contribute |
|---|---|
| Pure tone audiometry | Documents hearing thresholds and any asymmetry — central to separating Ménière's disease from vestibular migraine, and essential if hearing has changed. |
| Tympanometry | Assesses middle-ear function where ear symptoms or examination findings raise the question. |
| Videonystagmography (VNG) | Records eye movements with infrared goggles, which can document positional responses objectively and show oculomotor patterns that need further thought. |
| Imaging (arranged elsewhere) | Considered when examination findings, red-flag features or an atypical course suggest a cause that has to be excluded. It is not part of a routine dizziness work-up and is not done at this clinic. |
The limitation worth stating plainly: a normal VNG does not mean nothing is wrong. Vestibular migraine and persistent postural-perceptual dizziness can both produce normal vestibular test results, and a normal report in a patient with a convincing history should redirect the thinking rather than close the file. Our guide to the VNG test covers the procedure and its limits in detail. VNG supports a clinical assessment; it does not make a diagnosis by itself.
Why the diagnosis changes the treatment
These two conditions do not respond to the same things, which is why an approximate label is not good enough. The treatments are not interchangeable and neither is a stronger version of the other.
BPPV
Treatment is mechanical. A canalith repositioning procedure — the Epley manoeuvre is the best known — guides the displaced crystals out of the canal using a sequence of head positions, and this is the recommended first-line treatment for posterior canal BPPV. Two points from current guidance often surprise patients. First, the postural restrictions that used to follow the manoeuvre — sleeping upright, avoiding bending — are no longer recommended. Second, vestibular suppressant medicines such as antihistamines and benzodiazepines should not be used routinely for BPPV; they may blunt the symptom without addressing the cause, and they carry their own problems, particularly in older adults. Vestibular rehabilitation may be offered, and observation with follow-up is a legitimate option, since some cases settle on their own. Reassessment within about a month is advised to confirm whether symptoms have resolved.
Vestibular migraine
Treatment follows migraine principles rather than ear principles: identifying and addressing triggers, attention to sleep, meals, hydration and stress, treatment of acute attacks, and preventive medication where episodes are frequent or disabling enough to justify it. Vestibular rehabilitation has a role where a person has become avoidant of movement or visually busy environments.
Honesty about the evidence matters here. A 2023 Cochrane review of preventive drug treatment for vestibular migraine concluded that the overall evidence base is of low certainty and that better-designed trials are needed. That does not mean treatment is futile — it means expectations should be realistic, choices should be individualised, and a plan that is not working should be revisited rather than persisted with indefinitely.
The practical consequence is that a patient treated as BPPV when the problem is vestibular migraine may go through repeated manoeuvres with brief or no benefit, and conclude that nothing helps. That outcome is a diagnostic problem, not a treatment-resistant one.
When it is both, or still unclear
Having one of these conditions does not exclude the other, and a proportion of patients have both. The usual clue is a person whose positional spins respond well to repositioning but who continues to have longer episodes, light and sound sensitivity, or dizziness in visually busy environments.
Uncertainty is also a legitimate resting place for a while. The Bárány criteria include a "probable" category precisely because real presentations do not always assemble themselves neatly on the first visit. In the first year after symptoms begin, distinguishing vestibular migraine from early Ménière's disease can be genuinely difficult, since Ménière's can start with vestibular symptoms alone.
What a good plan does in that situation is make the uncertainty explicit and put a review point in the diary. A symptom diary recording the date, duration, trigger, associated symptoms and what you were doing beforehand is more useful than it sounds — over eight to twelve weeks it frequently converts an ambiguous history into a clear pattern. Persistent symptoms after treatment should be re-evaluated rather than accepted, both for unresolved BPPV and for an underlying vestibular or central cause that has not yet been identified.
When to seek urgent care
Neither BPPV nor vestibular migraine accounts for the following. If dizziness or vertigo comes with any of these, seek medical attention the same day rather than waiting for a routine appointment:
- Sudden hearing loss in one ear, with or without vertigo — this is treated as an emergency because the treatment window is short
- Double vision, difficulty speaking or slurred speech
- Weakness, numbness or clumsiness of the face, arm or leg
- Difficulty swallowing, or a new drooping of one side of the face
- A severe headache unlike any you have had before, or the worst headache of your life
- Loss of consciousness, fainting, or vertigo with chest pain or palpitations
- Unsteadiness severe enough that you cannot stand or walk without falling
- Vertigo following a head injury
- Fever with severe ear pain, ear discharge or swelling behind the ear
A first-ever prolonged episode of vertigo in someone with vascular risk factors such as high blood pressure, diabetes or a smoking history also warrants prompt assessment rather than a wait-and-see approach.
A diagnosis, not a test package
Vertigo assessment at HealthNest starts with the history and the examination, because that is where these two conditions actually separate. Positional testing, audiometry, tympanometry and VNG are used when they can answer a specific question — and the answer is interpreted alongside your symptoms rather than read off a report.
If your dizziness has been treated repeatedly without a clear explanation, bringing your previous prescriptions, hearing tests and any earlier vestibular reports to the appointment makes the visit considerably more productive.
Book a Vertigo ConsultationPractical questions before your appointment
Logistics rather than diagnosis — the things people ask at the front desk.
What should I bring with me?
Bring every medicine you currently take, including over-the-counter tablets and supplements, plus any previous hearing tests, vestibular reports, scans and prescriptions. If you have kept a note of when your episodes happen and how long they last, bring that too — it is often the most useful document in the file. Wearing comfortable clothing that allows easy head and body movement makes positional testing simpler.
Should I skip eye makeup before the appointment?
If VNG has been planned, yes — mascara, eyeliner and heavy face lotion can interfere with the infrared camera tracking your eyes. For a first consultation without pre-arranged testing it is less critical, but avoiding it does no harm. The clinic will tell you at booking if any specific preparation applies.
Can I drive home afterwards?
Positional testing and repositioning manoeuvres deliberately provoke the symptom, so you may feel dizzy or unsteady for a while afterwards. Arranging transport, or having someone accompany you, is sensible for a first visit — particularly if your episodes are severe or if travel itself sets off your symptoms.
Should I stop my regular medicines before testing?
Not on your own. Some medicines do influence vestibular test results, but stopping a prescribed medicine without medical advice can be unsafe. Ask the clinic in advance which, if any, should be withheld and for how long — the answer depends on the medicine, your health and what is being tested.
How soon should I know whether treatment is working?
For BPPV, reassessment within about a month after treatment or an initial period of observation is the standard advice, to document whether symptoms have resolved or persisted. Migraine-directed treatment usually needs longer before its effect can be judged fairly, which is why a symptom diary during that period is worth keeping.
References
- International Classification of Headache Disorders, 3rd edition — A1.6.6 Vestibular migraine, International Headache Society.
- Lempert T, Olesen J, Furman J, et al. Vestibular migraine: diagnostic criteria (update). Journal of Vestibular Research, 2022 (Bárány Society consensus).
- Bhattacharyya N, Gubbels SP, Schwartz SR, et al. Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update). American Academy of Otolaryngology–Head and Neck Surgery Foundation, 2017.
- Webster KE, et al. Pharmacological interventions for prophylaxis of vestibular migraine. Cochrane Database of Systematic Reviews, 2023.
- National Institute on Deafness and Other Communication Disorders — Balance Disorders.
Related reading: BPPV: the commonest cause of sudden dizziness · Tinnitus: causes, evaluation and what helps · Common ear problems and when to see a specialist · Vertigo and balance disorders at HealthNest
This article is for general education and does not replace an individual medical consultation, examination or diagnosis. Seek urgent care for sudden hearing loss, severe headache unlike any before, double vision, slurred speech, facial or limb weakness, difficulty swallowing, fainting, serious injury or rapidly worsening symptoms.