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At a glance
- BPPV (benign paroxysmal positional vertigo) is the most common cause of vertigo.
- It causes brief, intense spinning triggered by changes in head position, such as rolling over in bed or looking up.
- It happens when tiny crystals in the inner ear become displaced.
- It is usually cured with a simple repositioning manoeuvre.
What it is
BPPV is a common inner-ear disorder that causes sudden, brief bouts of spinning dizziness (vertigo) whenever you move your head into certain positions. The name describes it well: benign because it is not dangerous, paroxysmal because it comes in sudden short bursts, positional because head position triggers it, and vertigo for the false sense that you or the room is spinning. It is caused by tiny calcium crystals that have shifted out of place inside the balance organ of the inner ear. Although the spinning can feel alarming and disabling, BPPV does not damage hearing or the brain, and in most people it responds quickly to a simple bedside treatment.
Symptoms
The hallmark is short bursts of spinning (vertigo), usually lasting under a minute, brought on by head movements — lying down, turning over in bed, tilting the head back (for example to hang laundry or look up at a shelf) or bending forward. The spinning is often intense and can come with nausea, occasionally vomiting, and a sense of unsteadiness or lightheadedness that lingers for a while after the sharp spinning has settled. Many people first notice it in the morning when they roll over or sit up in bed.
A key feature is that each true spinning spell is brief and settles on its own once the head is held still, even though repeated position changes keep setting it off. Between episodes people usually feel normal. Importantly, BPPV does not cause hearing loss, ringing in the ears (tinnitus), ear fullness, headache, or any weakness or numbness — those features point to other conditions and should be assessed by a doctor.
What causes it
The inner ear contains tiny calcium-carbonate crystals (sometimes called otoconia) that normally sit in a part of the balance organ and help you sense gravity and movement. In BPPV these crystals become dislodged and drift into one of the fluid-filled semicircular canals, where they do not belong. When you move your head, the loose crystals shift the fluid and send a false, exaggerated signal of movement to the brain — while your eyes and body report something different. That mismatch is felt as a burst of spinning.
Often there is no clear reason why the crystals come loose. Known triggers include the natural changes of ageing, a knock to the head, a period of prolonged bed rest or inactivity (for example after surgery or illness), or previous inner-ear problems such as an infection or inflammation. Because the crystals can dislodge again, BPPV may recur months or years later, but each episode is treatable in the same way.
Who is at risk
BPPV can affect anyone, but it becomes more common with older age and is seen more often in women. Other factors that raise the risk include a previous head injury, a past inner-ear disorder such as labyrinthitis or vestibular neuritis, migraine, and long spells of lying flat. Older adults are a particular concern because the sudden vertigo can lead to loss of balance and falls, which is why it is worth having diagnosed and treated rather than simply endured.
How it is diagnosed
A doctor can usually diagnose BPPV from the history and a positional test, without scans. The most common test is the Dix–Hallpike manoeuvre, in which the clinician quickly but safely lowers you from sitting to lying with your head turned and slightly extended over the edge of the couch. If BPPV is present, this briefly reproduces the vertigo and brings on a characteristic flicking eye movement (nystagmus) that tells the doctor which ear and canal is affected. A related roll test is used to check the horizontal canal.
Imaging such as CT or MRI is not usually needed and is reserved for atypical cases or when the examination suggests another cause. Further assessment or referral to an ENT (ear, nose and throat) specialist may be arranged if the picture is unusual, if there is hearing loss, or if conditions such as Ménière’s disease or labyrinthitis are suspected.
Telling BPPV apart from more serious causes
This is the most important part to understand. BPPV is brief, purely position-triggered, and never causes neurological symptoms. Dizziness or vertigo can occasionally be a warning sign of a stroke or another serious problem in the brain, and the features are different.
Call 995 immediately if dizziness or vertigo comes with any of the following:
- a sudden severe or unusual headache;
- double vision, loss of vision, or difficulty focusing;
- slurred speech or trouble finding words;
- weakness, numbness or drooping of the face, an arm or a leg;
- difficulty walking, severe unsteadiness or a sense of veering to one side;
- new deafness or ringing in one ear.
These can indicate a stroke or another serious cause and need emergency care. By contrast, BPPV produces only short spinning spells brought on by head movement, with no headache, no vision or speech changes, no limb weakness, and no hearing loss. Vertigo that is constant (rather than in brief bursts), that does not improve when you keep the head still, or that is accompanied by any of the above should be treated as an emergency until proven otherwise.
Treatment
BPPV is treated with canalith repositioning manoeuvres (such as the Epley manoeuvre) — a precise, guided sequence of head and body movements that uses gravity to move the loose crystals out of the sensitive canal and back to where they cause no symptoms. Performed by a trained clinician — a doctor, ENT specialist, or a physiotherapist with vestibular training — these manoeuvres are highly effective, often resolving symptoms in one or a few sessions. The specific manoeuvre depends on which ear and canal is involved, which is why an accurate diagnosis matters. You may feel a brief burst of vertigo during the movements, which is expected and settles quickly.
Some people are also taught guided exercises (such as Brandt–Daroff exercises) to do at home, which can help symptoms settle over time or reduce recurrences. Medication has a limited role: anti-sickness or anti-vertigo drug classes may occasionally be used for short-term relief of severe nausea, but they do not cure BPPV and can even prolong recovery if relied on, so they are not the main treatment. BPPV can recur, and if it does it can simply be re-treated with the same manoeuvres.
Living with it
While an episode is active, take sensible precautions. Move your head and change position slowly and deliberately, especially when getting in and out of bed; sit on the edge of the bed for a moment before standing. It can help to sleep slightly propped up on extra pillows for a few nights and to avoid the positions that set off the spinning. Avoid driving, working at heights, using ladders, or operating machinery while you are having attacks, as a sudden spell could be dangerous. Remove trip hazards and use handrails to reduce the risk of falls, particularly for older adults living alone.
Reassuringly, BPPV usually clears completely after treatment. If it recurs — which it can — you will recognise the familiar pattern of positional spinning and can return to a GP, polyclinic, ENT clinic or vestibular physiotherapist to have the repositioning manoeuvre repeated. Learning your prescribed home exercises can also give you a way to manage flare-ups.
When to see a doctor
See a doctor for positional spinning to confirm BPPV and have a repositioning manoeuvre, especially if episodes are frequent, are causing falls, or are interfering with daily life. In Singapore you can start with a GP or polyclinic, who can assess you and refer you to an ENT specialist or vestibular physiotherapist if needed. Seek urgent care and call 995 if vertigo comes with a severe headache, weakness, numbness, slurred speech, double or lost vision, difficulty walking, or new deafness, which can indicate a more serious cause such as a stroke.
Common questions
How long does BPPV last?
Individual episodes last under a minute, and the condition often resolves quickly with a repositioning manoeuvre, though it can recur.
Will BPPV go away on its own?
It sometimes settles by itself over weeks, but a repositioning manoeuvre usually resolves it much faster.
Is BPPV serious?
It is not dangerous, but the vertigo can increase the risk of falls, so treatment is worthwhile.
Can BPPV come back after treatment?
Yes. Even after a successful manoeuvre the crystals can dislodge again months or years later. Recurrences are common and can be re-treated the same way, so a return of positional spinning is not a cause for alarm.
Are there exercises I can do at home?
A clinician may teach you specific exercises (such as Brandt–Daroff exercises) or a home version of the repositioning manoeuvre. It is best to learn these under guidance first so you use the correct technique for your affected ear.
Related guides
Sources
- HealthHub Singapore — vertigo and dizziness.
- Society of Otolaryngology Singapore — BPPV.
- American Academy of Otolaryngology — BPPV.
This article is for general information only and does not replace a consultation with a qualified doctor. Please seek personalised medical advice for your situation.