Few symptoms are as alarming as the room suddenly spinning when you roll over in bed. It is natural to fear the worst. In most cases, though, positional vertigo of this kind has a simple mechanical cause and a remarkably effective treatment.
This article explains what is happening, how a clinician confirms it, what treatment involves, and — just as importantly — which features of dizziness mean you should skip the physiotherapy clinic and go straight to emergency care.
What BPPV is
Your inner ear contains two kinds of balance sensors. One set detects gravity and straight-line movement using tiny calcium carbonate crystals, sometimes called otoconia. The other set, the three semicircular canals, detects rotation using fluid that moves as your head turns.
In BPPV, some of those crystals come loose and drift into one of the canals, most often the posterior canal. When you move your head in certain directions the crystals shift within the fluid, the canal reports a rotation that is not really happening, and your brain experiences a short, intense burst of spinning.
The name describes it well. Benign, because it is not dangerous in itself. Paroxysmal, because it comes in sudden short bursts. Positional, because head position triggers it.
The classic pattern
BPPV has a recognisable signature, and recognising it is half the diagnosis.
- Spinning that begins a few seconds after a change of head position.
- Common triggers: rolling over in bed, lying down, sitting up, looking up to a high shelf, bending forward.
- Each episode lasts seconds, usually under a minute.
- Often worse in the morning or on one side.
- Nausea is common; a lingering off-balance feeling between episodes is too.
- Hearing is not affected.
Who gets it
BPPV becomes more common with age and is the most frequent cause of vertigo in older adults. It can follow a head knock, a period of bed rest, or an inner-ear infection, but in many people it appears with no obvious cause at all.
It is also more common in people with low vitamin D and in people who have had it before. Around a third or more of people will have a recurrence within a few years, which is worth knowing so that a second episode does not cause the same alarm as the first.
When dizziness is an emergency
Most dizziness is not dangerous, but some is, and the distinction matters. Vertigo can occasionally be the first sign of a stroke in the back of the brain. Call 911 or go to an emergency department if dizziness comes with any of the following.
- Weakness, numbness or tingling in the face, arm or leg.
- Slurred speech, difficulty finding words, or a drooping face.
- Double vision or loss of vision.
- A sudden, severe headache unlike any you have had.
- Difficulty walking or severe imbalance that is new.
- Constant vertigo lasting hours that is not triggered by position.
- Sudden hearing loss in one ear.
How BPPV is diagnosed
The diagnosis is clinical — no scan or blood test is needed. A physiotherapist trained in vestibular rehabilitation takes a careful history, then performs positional tests, the best known being the Dix-Hallpike test.
In the Dix-Hallpike, you sit on the treatment table, your head is turned to one side, and you are guided quickly back to lying with your head slightly over the edge. If BPPV is present in the posterior canal on that side, the vertigo is reproduced and your eyes make a characteristic flickering movement, called nystagmus, that the clinician watches for. The direction of that eye movement identifies which ear and which canal are involved.
It is unpleasant for a few seconds, but it is also reassuring: if the test reproduces the symptoms in the expected way, the cause is confirmed and treatment can start in the same appointment.
Treatment: repositioning manoeuvres
BPPV is treated by guiding the crystals out of the canal and back to where they belong, using a sequence of head and body positions. For the posterior canal the standard is the Epley manoeuvre; other canals use different manoeuvres, which is one reason correct identification matters.
Each position is held for around thirty seconds to a minute, and the whole sequence takes a few minutes. It may briefly reproduce the vertigo. Many people are clear after one session, and most after two or three.
Medication that suppresses dizziness may help with nausea in the short term, but it does not move the crystals and can slow the brain's adaptation if used for long. The manoeuvre is the treatment.
| BPPV | Vestibular neuritis | Ménière's disease | |
|---|---|---|---|
| Duration | Seconds | Days, easing over weeks | Minutes to hours |
| Trigger | Head position | Comes on by itself | Comes on by itself |
| Hearing | Normal | Normal | Fluctuating loss, ringing, fullness |
| Main treatment | Repositioning manoeuvre | Vestibular rehabilitation | Medical management |
After treatment
After a repositioning manoeuvre, some clinicians suggest avoiding the triggering positions for a day or so, though evidence for strict restrictions is limited. A residual feeling of unsteadiness or wooziness for a few days is common and usually fades.
If imbalance lingers, vestibular rehabilitation exercises help the brain recalibrate, and are particularly worthwhile for older adults, for whom feeling unsteady raises the risk of falls.
If BPPV recurs, the same manoeuvres usually work again, and some people can be taught to perform a home version safely once the affected side is known.
Living with BPPV while it settles
Between the diagnosis and full resolution, a few practical measures reduce the risk of falls and make daily life easier. They are particularly important for older adults, for whom a fall carries more risk than the vertigo itself.
Most of these are only needed for days to a couple of weeks. If you find yourself relying on them for longer, that is a sign the problem has not fully resolved and a reassessment is worthwhile.
- Sit on the edge of the bed for a moment before standing up.
- Get up slowly in the morning and after lying down.
- Use a night light and keep the path to the bathroom clear.
- Avoid ladders, step stools and tilting your head far back until it settles.
- Turn your whole body rather than just your head when you look round quickly.
- Hold a rail on stairs.
Dizziness that is not BPPV
Not all dizziness is vertigo, and not all vertigo is BPPV. Light-headedness when standing up quickly is usually related to blood pressure. A floating or rocking sensation that lasts for months, often worse in busy visual environments such as supermarkets, can be persistent postural-perceptual dizziness, which responds to a different kind of vestibular rehabilitation. Dizziness after a concussion often has several contributing causes at once.
This is why assessment matters. The positional tests that confirm BPPV also help rule it out, and when they are negative the clinician moves on to the other possibilities — including a referral back to your physician where that is the right step.
Why a second opinion on the side matters
BPPV can affect either ear and more than one canal, and occasionally both sides at once. Treating the wrong side or the wrong canal does not help, which is the most common reason home manoeuvres copied from videos fail. A careful assessment identifies the side and canal before any treatment begins.
Vestibular physiotherapy in Woodbridge
At Med Wellness on Ansley Grove Road, our physiotherapists assess and treat BPPV and other vestibular problems, including the persistent unsteadiness that can follow an inner-ear infection or a concussion. Assessment starts with screening for anything that needs a physician instead, and treatment usually begins in the same appointment.
No referral is needed to book in Ontario, and physiotherapy for dizziness is covered by most extended health plans. If you are unsure whether your symptoms fit, call +1 (905) 605-8889 and describe them — and if any of the emergency signs above are present, do not wait.
References
Written by Sandeep Sharma, Clinic Director · Clinically reviewed by Paramjeet Kaur Bassi · Last reviewed August 11, 2026
This page is general health information reviewed by a registered clinician. It is not personalised medical advice and does not replace an in-person assessment. If your symptoms are severe, worsening or new, contact a healthcare professional.
