Part of Dizziness and BPPV
What causes BPPV, and what the ear crystals have to do with the vertigo
Warning signs, and when to get help
What are the ear crystals, and what do they normally do?
Being told that crystals in your ear are making the room spin sounds like something invented to get you out of the consulting room. It is a real structure with a real job, and the job explains the whole condition.
Deep in the inner ear there is a small chamber with a patch of sensing cells, and over that patch sits a layer of jelly. Embedded in the jelly are microscopic chalk-like grains, the otoconia. St George's NHS calls them tiny chalk-like particles, and BPPV is what happens when some of them are no longer where they should be. Their weight is the point of them: it weighs the jelly down, and that weight is what lets the patch register which way is down (Meniere's and Vestibular UK). You use it every time you tip your head without looking.
The balance canals next door do a different job. They are fluid-filled loops, and they report head movement through the way that fluid shifts against a sensor at one end. A grain of otoconia has no business in one. When a few of them end up there, they slide with gravity each time you reposition your head, drag the fluid along with them, and bend the sensor, and the brain is told the head is turning when it is not (Parnes and colleagues, 2003). The eyes jerk to match the turning they are being told about, which is the flicker a clinician looks for, and you feel the room wheel round.
So the crystals are not debris and not a blockage. They are standard equipment one chamber out of place.
What causes the crystals to come loose?
Start with what is known, because it is less than most pages admit.
The grains are not fixed for life. Meniere's and Vestibular UK describes them as constantly being reabsorbed and made again, with fragments coming loose over time, and lying flat as the position that then lets some of that loose material drop into a canal. Parnes and colleagues put the origin more carefully still: the particles are probably displaced from the jelly layer in the utricle, the chamber described above (Parnes and colleagues, 2003). That word probably is doing real work and is worth keeping.
There are causes that get named, and one is named more than the rest. Head injury is the most common identified cause of BPPV. The condition can also follow an inflammation of the balance nerve or inner ear, it has been described after inner ear surgery, and it turns up alongside Meniere's disease and migraine (Parnes and colleagues, 2003). What those other conditions actually are is covered in one place on this site, what else causes vertigo besides BPPV, and this page does not try to describe them a second time.
Head injury deserves a pause rather than a line in a list. If your spinning started after a blow to the head, the head injury is the thing to get assessed, and the dizziness is one symptom of it rather than the diagnosis. Read the two head injury lines on the warning list at the foot of this page now, not later, and note that feeling dizzy after a knock to the head has its own same-day route there even when nothing else on the list applies.
What is not known is the part most pages skip over. Nobody can say why your left ear released a few grains in the week it did, why that ear and not the other, or why some people shed them repeatedly and most never do. Not a movement you made, not a position you slept in, not something you lifted. It is reasonable to stop looking for the moment it happened, because for most people there is no moment to find.
Why loose crystals make the room spin, and why it stops
The timing is the giveaway, and it falls straight out of the mechanics.
Move your head and the particles start to slide down the canal, dragging fluid with them and bending the sensor. That bend is the false signal. Then the slide finishes, the particles come to rest at the bottom of their travel, the fluid stops moving and the sensor returns to neutral, and the signal stops with it (Parnes and colleagues, 2003). Nothing has to be undone and nothing has to settle; it simply runs out. That is why a spell is counted in seconds rather than hours, and why St George's NHS puts the spinning at usually less than a minute.
Repeat the movement several times over and the response often gets weaker, because the particles disperse along the canal and a scattered group deflects the sensor less than a clump (Parnes and colleagues, 2003). People discover that for themselves and draw a conclusion this page will not support: that moving through it has dealt with the problem. A weaker response to the same movement is not the same thing as a cleared canal, and where those particles end up is decided by an examination and the maneuver that matches your own ear, not by repetition. Setting off spell after spell at home to wear it out is how people fall.
A spinning spell that lasts hours is not loose crystals behaving oddly, and spinning with no change of head position behind it is not this mechanism at all. Both are on the warning list below with a time frame attached.
Which canal they end up in, and why that changes the treatment
There are three canals on each side, and which one holds the particles changes the whole picture. The back canal is involved in the large majority of cases, the horizontal canal in a minority, and the top canal rarely (Parnes and colleagues, 2003). A canal is a loop sitting in its own plane, so the direction a particle has to travel to get out of it is different in each one.
That is the honest reason a maneuver is not generic. The sequence of head positions that walks particles out of the back canal is the wrong sequence for the horizontal one, and both are side-specific: the same movements done toward the unaffected ear achieve nothing. Working out which ear and which canal is the entire purpose of the positional tests, which a clinician performs and watches your eyes during, and those tests are described on the main dizziness and BPPV page.
It also explains something readers often take personally. A maneuver that helped a friend may do nothing for you, and a version that worked for your last episode may not fit this one. That is not a failure of the treatment. It is a different canal.
What causes BPPV when nothing happened?
For a lot of people, this is the real question, and here is the straight version: in most cases no cause is found, and the group with no identifiable cause is the larger of the two (Parnes and colleagues, 2003). You are not missing something.
The explanation itself deserves the same straightness. The loose-particle account is a model, and it is a good one, because it predicts what clinicians actually see: the latency, the brief spell, the direction of the eye movement for each canal, the way it fades on repetition, and the fact that moving the head through a set sequence of positions clears it. It also has direct support. Kalmanson and Foster note that mobile particles have been observed and photographed during surgery, which is about as close to seeing the mechanism as this subject gets, and they conclude that freely moving particles explain most cases (Kalmanson and Foster, 2023).
Where it stops being settled is in the detail. The variant in which particles are thought to stick to the sensor itself, rather than float free, is still argued over by specialists. Kalmanson and Foster review it and find the evidence that otoconia adhere strongly or persistently to the sensor lacking, calling persistent adherence theoretical, and they point out that pathology specimens for this are rare and animal models few (Kalmanson and Foster, 2023). None of that unsettles the main account, and none of it changes what happens in a clinic. It is simply the difference between what has been shown and what has been inferred, and you are entitled to that difference when somebody explains your diagnosis in one sentence.
Does age come into it?
Yes, as the clearest pattern there is. BPPV becomes steadily more common as people get older (Meniere's and Vestibular UK), and Parnes and colleagues describe onset as most common in middle and later life, and report that several studies have found it more often in women than in men (Parnes and colleagues, 2003).
Why is less settled than the fact. An inner ear that has been reabsorbing and reforming these grains for seventy years has had more opportunity to shed some, which is a reasonable account and not a proven one. What matters practically is different: the same spinning spell carries a higher price in an older body, because of what a fall costs. One study of older patients that Parnes and colleagues describe found unrecognized BPPV in some of them, which is to say people whose dizziness had been put down to age and never examined. An examination is quick and it is worth asking for.
Post-traumatic cases are the exception to the age pattern. Where a head injury is behind it, BPPV turns up in younger people too (Parnes and colleagues, 2003).
Can the crystals be dissolved, or do they go away on their own?
Dissolved, no. Nothing you can eat, drink, swallow, rub or stretch dissolves or flushes these grains, and anything selling you that is selling you something. The body does reabsorb otoconia as part of its normal turnover (Meniere's and Vestibular UK), but that is housekeeping on its own schedule and not a treatment you can speed up.
Go away on their own, often yes. Parnes and colleagues describe BPPV as self-limited (Parnes and colleagues, 2003), and the BPPV guideline accepts a period of watching and waiting as a reasonable choice, with a check afterward (Bhattacharyya and colleagues, 2017). What that usually looks like, and how long a wait the guideline has in mind, is set out on the main dizziness and BPPV page.
Waiting has a cost, and it is not the dizziness. It is the weeks of moving carefully on stairs, in the dark and in the shower while you are liable to a spell. That is a judgment for you and your clinician, and the reason it is a judgment rather than an obvious choice is the fall.
Why this page does not give you the maneuver
A good share of the people who come to this page want the movements, so this section says plainly why there are none here.
The maneuver has to match the ear and the canal, as the section above explains, and nothing you can observe at home tells you either. Done toward the wrong side it does nothing; done on a neck that cannot take the position it is unsafe; and the spinning it provokes on the way can drop someone who is standing up a minute later. The BPPV guideline names conditions in which the usual positional test and treatment have to be modified or avoided altogether, among them a narrow spinal canal in the neck, severe rheumatoid arthritis, a spine-stiffening condition, Down syndrome and known disease of the blood vessels to the brain (Bhattacharyya and colleagues, 2017). None of those is something a web page can screen you for.
So this site publishes no maneuver steps and no maneuver video. That was decided knowingly, and the reasoning is in print on the main dizziness and BPPV page. If a clinician has diagnosed you, named the ear and taught you a home version for it, that is different: follow theirs.
What is being withheld here is also not hard to get, and that is the part worth knowing before you go looking for a video instead. The examination and the treatment are done by a doctor or a physio with their hands and their eyes, with no scan and no equipment, and for vestibular work the NHS says you can ask a GP to refer you to a physiotherapist, or that it may be possible to refer yourself directly (NHS labyrinthitis and vestibular neuritis). Outside the UK, direct access to a physiotherapist varies by country and by state, so ask what the route is where you live rather than assuming you need a referral.
The exercises this site does publish for dizziness are vestibular rehabilitation, and they are for the unsteadiness and the swimmy feeling that linger, not for clearing a canal. Start these exercises only after a doctor or vestibular physio has found the cause of your dizziness. New dizziness, or dizziness that has changed, needs checking first.
When spinning is not loose crystals at all
Loose crystals have a narrow signature: brief, positional, strong, repeatable, with no hearing change and nothing neurological attached. Several other conditions produce vertigo or dizziness, and the guideline asks clinicians to distinguish them (Bhattacharyya and colleagues, 2017). Inner ear problems are the most common cause of vertigo overall, and the NHS also lists migraine and some medicines among the causes (NHS vertigo). Each of those conditions is described once on this site, on one page, and that page is what else causes vertigo besides BPPV.
Two near neighbors have pages of their own, because the pattern of the day gives them away. Dizziness that is at its worst in the first minutes after waking is covered on why vertigo is worse in the morning, where the spin on rolling over and the light-headedness on standing up are separated out. Whether your sleeping position has anything to do with any of it is answered on sleeping position with BPPV. Episodes that keep returning after treatment are on why BPPV keeps coming back.
When dizziness needs checking rather than explaining
The list at the foot of this page carries the exact wording and the time frame for every sign. This section only says which way to read it.
Call emergency services straight away for any sign of a stroke, even one that passes, including sudden dizziness with unsteadiness or falling over. The same goes for vertigo with new hearing loss, a change in your vision, trouble speaking, or weakness, numbness or tingling in a limb. It goes for a new or sudden severe headache with the dizziness, and for a racing or irregular heartbeat with feeling faint. It goes for a headache or neck pain that arrived in a single moment, or that nothing changes. And it goes for the two head injury lines, which cover being knocked out, a headache since the blow, vomiting, drowsiness, confusion and the rest.
A fall you cannot get up from, or one you cannot remember, is on that list too, and both lines matter here because the weeks of waiting described above are the weeks a spell is most likely to put somebody on the floor.
Get medical advice the same day for dizziness or spinning that has been there all the time for a day or more rather than coming in spells, for sudden new dizziness or unsteadiness, for blacking out even briefly, for feeling dizzy after a knock to the head, for sudden hearing loss, and after a fall if you are in pain, have hurt yourself or feel unwell, or you were on the floor for an hour or more.
See your GP or a physio within a few days for short spells of spinning on lying down, rolling over or looking up, or for dizziness that keeps coming back. That is the ordinary route, and it is the one most readers of this page need. An examination takes minutes and it is the only thing that can tell you which ear and which canal, which is the only thing that decides the treatment.
Keeping steady matters more than the explanation while you wait. The NHS advises sitting down the moment you feel dizzy, moving your head slowly, getting out of bed slowly, and putting the light on if you get up in the night (NHS vertigo). Do not drive, climb ladders or use machinery while you feel dizzy (NHS dizziness). The wider plan for strength and steadiness is on balance and falls prevention, thin bones change what a fall costs and are covered on osteoporosis, and the other programs for this part of the body sit under balance programs.
Related exercise programs
Warning signs
Get emergency help now
- Emergency: call emergency services straight away for any sign of a stroke, even if it goes away: sudden dizziness with unsteadiness or falling over, a face that droops on one side, an arm you cannot lift or keep up, slurred or muddled speech, weakness or numbness on one side of your body or face, sudden blurred vision, double vision or loss of sight, trouble swallowing, a sudden severe headache, or a sudden fall where your legs give way but you do not black out (a drop attack).
- Emergency: vertigo or dizziness together with new hearing loss, double vision or loss of vision, trouble speaking, or weakness, numbness or tingling in an arm or leg. Call emergency services or go to an emergency department straight away.
- Emergency: dizziness with a new, severe headache, or a sudden, severe headache that feels unlike anything you have had before. Call emergency services straight away.
- Emergency: a new headache or neck pain, or both, that does not feel like ordinary neck pain. If this is your first bout, judge it by how it behaves rather than by how it compares. Either of the next two is enough on its own. One, it came on suddenly, in a single moment, even if it is not severe and even if it has eased since. Sudden onset counts on its own. Two, nothing you do changes it much: no position or rest makes a real difference, and after the first day or two it has not started to settle. It counts even if you have none of the other emergency signs above, and it matters more if it started after a neck injury or strain, even a minor one, a bout of heavy coughing, or having your neck manipulated. Go to an emergency department straight away, or call emergency services if you cannot get there safely, and do not drive yourself. Do not start these exercises, and do not have any hands-on treatment to your neck, until your neck has been checked. A tear in an artery in the neck can start as pain alone, often on one side, with nothing else to find. If you can find a position that eases it, follow the same day warning sign for this below instead.
- Emergency: after a knock to the head, being very drowsy or finding it hard to keep your eyes open, confusion, a fit (seizure), new weakness or numbness anywhere in your body, new trouble understanding, speaking, walking or keeping your balance, new problems seeing or hearing, clear fluid coming from your ears or nose, bleeding from your ears or bruising behind them, a black eye when your eye was not hit, a dent in your head or a wound with something stuck in it, or a change in behavior. Call emergency services straight away. These can be signs of an injury to the brain.
- Emergency: after a knock to the head, you were knocked out, even for a moment, you cannot remember what happened just before or after, you have had a headache ever since, or you are being sick (vomiting). The same applies, even if you feel fine, if you take medicine that thins your blood, other than aspirin on its own, have a bleeding or clotting condition, have had brain surgery in the past, or had been drinking alcohol or taking drugs when it happened. Go to an emergency department straight away, and do not drive yourself.
- If chest pain, pressure or tightness does not ease quickly when you rest, spreads to your arm, neck, jaw, stomach or back, or comes with sweating, feeling sick, feeling light-headed or being short of breath, call emergency services straight away, as this can be a heart attack. If it eases quickly and none of these happen, get medical advice the same day, and do not exercise again until you have been checked.
- Emergency: a racing, pounding, fluttering or irregular heartbeat that does not settle when you rest, or that comes with dizziness, feeling faint or fainting, chest pain or shortness of breath. Call emergency services straight away. If it has already stopped, get medical advice the same day.
- Emergency: you have just fallen and cannot get up, or you think you may have hurt your head, neck, back or hip. Stay where you are, keep warm and call emergency services, or get someone to call for you. If you got up and walked without trouble and only notice pain later, use the same-day lines in this list instead.
- Emergency: you fell and cannot remember the fall or how it happened. Go to an emergency department straight away, and do not drive yourself. You may have blacked out or hit your head without knowing it.
Get help today
- Same day: a new headache or neck pain, or both, that does not feel like ordinary neck pain, that started after a neck injury or strain, even a minor one, a bout of heavy coughing, or having your neck manipulated, but that does ease when you change position or rest. Get checked the same day before you start these exercises or have any hands-on treatment to your neck. If nothing you do changes it much any more, or it has not started to settle after a day or two, follow the emergency warning sign for this above.
- Same day: you blacked out or fainted, even for a moment. Get medical advice the same day. Call emergency services instead if the person is not breathing, cannot be woken within 1 minute, has not fully recovered or has trouble speaking or moving, has chest pain or a pounding, fluttering or irregular heartbeat, fainted while exercising or lying down, is shaking or jerking, or was badly hurt.
- Same day: dizziness, lightheadedness, blurred vision or feeling faint when you stand up that is new for you, does not pass within a minute or two, keeps happening, or has made you fall. Sit or lie down, and get medical advice the same day. This can be a drop in blood pressure on standing (postural hypotension), a type of low blood pressure, which the NHS lists among the causes of falls, and your doctor can check it. Tell them about your medicines, because some can cause it. If it does not settle within a few minutes of sitting or lying still, call emergency services. If you faint, use the fainting line above.
- Same day: sudden new dizziness, or feeling faint or unsteady, without any of the stroke signs above. Stop, sit down and get medical advice the same day. If you faint, it does not settle within a few minutes of sitting still, or you cannot stand or walk steadily, call emergency services.
- Same day: dizziness or spinning that has been there all the time for a day or more, rather than coming in short spells when you move your head, without any of the emergency signs above. Get medical advice the same day. If you cannot stand or walk steadily, call emergency services.
- Same day: vertigo with being sick or feeling very sick, a very high temperature, or feeling hot, cold or shivery, without any of the emergency signs above. Get medical advice the same day.
- Same day: after a fall, you are in pain, have hurt yourself or feel unwell, or you were on the floor for an hour or more, without any of the emergency signs above. Get medical advice the same day, even if you managed to get up.
- Same day: you feel dizzy after a knock to the head, without any of the emergency signs above. Get medical advice the same day.
- Same day: sudden hearing loss in one or both ears, or hearing that has got worse over a few days, without dizziness or any of the emergency signs above. Get medical advice the same day, as it may need treating quickly.
Book an appointment
- Within a few days: short spells of spinning when you lie down, roll over in bed or look up, or dizziness that keeps coming back, without any of the signs above. See your GP or a physio within a few days so the cause can be confirmed and treated.
- Within a few days: you have had a fall, even if you were not hurt, or you keep tripping, stumbling or feeling that your legs might give way. Book an appointment with your doctor within a few days and ask about a falls assessment. Tell them about every fall, even the ones where you were not hurt.
Common questions
What are the crystals in your ear?
They are microscopic chalk-like grains called otoconia. St George's NHS describes them as tiny chalk-like particles in the inner ear, and in BPPV the trouble is that they are no longer where they should be. Where they should be is a jelly layer sitting over a patch of sensing cells in a chamber of the inner ear, and their weight is the point of them: it weighs that jelly down and makes the patch sensitive to gravity (Meniere's and Vestibular UK). They are not a foreign body, not a sign of a blockage, and not something you grew because of anything you did. They are standard equipment, and the whole of BPPV is a few of them ending up one chamber over, in a canal built for a different job.
What causes BPPV in young adults?
The same mechanism, with a different balance of causes. BPPV becomes steadily more common as people get older (Meniere's and Vestibular UK), so a younger person with it is less typical, and that makes the identifiable causes more worth asking about. Head injury is the most common named cause of BPPV, and the condition can also follow another inner ear illness or ear surgery (Parnes and colleagues, 2003). Even so, plenty of young adults have it with no cause anybody can find. If your spinning started after a blow to the head, read the head injury lines on the warning list below before anything else on this page, and have the head injury itself assessed rather than treated as vertigo.
How do you treat ear crystals at home?
You do not, and this is the one question on the page where the answer is a flat no. The treatment for BPPV is a repositioning maneuver, which only works if it matches the ear and the canal holding the particles, and that match is decided by an examination rather than by how the spinning feels. Done on the wrong side, or on a neck that will not tolerate it, it does not help, and the spinning it sets off can put you on the floor. There is also nothing that dissolves or flushes the crystals: no diet, no supplement, no massage and no neck manipulation. If a doctor or physio has diagnosed you, told you which ear is involved and taught you a home version, follow their instructions and nobody else's. The reasoning in full is on the main dizziness and BPPV page.
What are the symptoms of ear crystals?
Short, strong spinning that a change of head position brings on: lying down, rolling over in bed, looking up, bending forward. Each spell usually lasts under a minute and settles once your head is still (St George's NHS), and it often leaves nausea and a wobbly, swimmy feeling behind for a while. Between spells the room is not turning. Loose crystals do not cause a constant dizziness, they do not cause hearing loss or ringing in the ear, and they do not cause a headache, so any of those alongside the spinning points at something that needs looking at rather than explaining. Spinning or dizziness that has been there all the time for a day or more is on the warning list below and asks for medical advice the same day.
References
- Parnes LS, Agrawal SK, Atlas J. Diagnosis and management of benign paroxysmal positional vertigo (BPPV). CMAJ. 2003;169(7):681-693. https://pmc.ncbi.nlm.nih.gov/articles/PMC202288/
- Kalmanson O, Foster CA. Cupulolithiasis: a critical reappraisal. OTO Open. 2023;7(1):e38. https://doi.org/10.1002/oto2.38
- Bhattacharyya N, Gubbels SP, Schwartz SR, et al. Clinical practice guideline: benign paroxysmal positional vertigo (update). Otolaryngology-Head and Neck Surgery. 2017;156(3 Suppl):S1-S47. https://doi.org/10.1177/0194599816689667
- St George's University Hospitals NHS Foundation Trust. Benign paroxysmal positional vertigo (BPPV). https://www.stgeorges.nhs.uk/service/therapies/neurology-vestibular-physiotherapy-outpatients/benign-paroxysmal-positional-vertigo-bppv/
- Meniere's and Vestibular UK. What is BPPV? https://www.meandve.org.uk/information-and-support/symptoms-and-conditions/bppv
- NHS. Vertigo. https://www.nhs.uk/conditions/vertigo/
- NHS. Dizziness. https://www.nhs.uk/symptoms/dizziness/
- NHS. Labyrinthitis and vestibular neuritis. https://www.nhs.uk/conditions/labyrinthitis/
- NHS. Symptoms of a stroke. https://www.nhs.uk/conditions/stroke/symptoms/
- NHS. Heart palpitations. https://www.nhs.uk/conditions/heart-palpitations/
- NHS. Fainting. https://www.nhs.uk/symptoms/fainting/
- NHS. Chest pain. https://www.nhs.uk/symptoms/chest-pain/
- NHS. Falls. Page last reviewed 06 March 2025. https://www.nhs.uk/conditions/falls/
- NHS. Low blood pressure (hypotension). https://www.nhs.uk/conditions/low-blood-pressure-hypotension/
Written and checked by the PocketPhysio editorial team. Last updated 2026-10-18.
This page is general education, not a diagnosis or a personal treatment plan. See a physiotherapist or doctor for advice about your own situation.