Dizziness is several different complaints. Pinning down which one you have is most of the job. The spinning most people get, benign paroxysmal positional vertigo, comes from a loose crystal in the inner ear. A repositioning maneuver called the Epley clears it in minutes, and once a clinician confirms the side, you can be taught to do it at home.
When a one-sided vestibular loss lingers, vestibular rehabilitation retrains balance. The one pattern not to miss is a stroke in the back of the brain, arriving as sudden, continuous vertigo. A simple bedside eye exam catches it better than an early scan. Most dizziness is not dangerous and settles, and the few urgent patterns are listed at the end.
Findings & Outcomes
What It Is
Dizziness covers four different feelings. Naming yours does most of the diagnosis. Each comes from a different place in the body:
- Vertigo is a false sense of movement, usually spinning, from the balance organs of the inner ear or from the brain.
- Presyncope is the graying, swimming, about-to-faint feeling of blood flow to the brain dropping for a moment.
- Disequilibrium is unsteadiness felt in the legs and trunk when you stand or walk, with no spinning.
- Non-specific light-headedness is the vaguest: a floating or disconnected feeling that fits none of the others cleanly.
The word people reach for is a weak guide on its own. In one emergency-department study, patients asked to name the single best word for their dizziness picked a different word 52% of the time when asked again about six minutes later. Their account of the timing and the triggers, by contrast, stayed steady (Newman-Toker, Mayo Clin Proc 2007). The reliable questions are how long an episode lasts and what sets it off:
- Seconds of spinning on rolling over point to a loose ear crystal.
- Days of constant spinning point to an inflamed nerve.
- Attacks lasting minutes to hours point to Meniere's or migraine.
The most common cause of spinning vertigo is benign paroxysmal positional vertigo (BPPV), with a lifetime prevalence of about 2.4% (von Brevern, J Neurol Neurosurg Psychiatry 2007). A calcium crystal (otoconia) drifts out of place into one of the semicircular canals. A change of head position then sets off seconds of violent spinning that settles when you hold still. The triggers are rolling over in bed, lying back, and looking up. A clinician confirms it with the Dix-Hallpike test, tipping your head back and to one side to bring on the telltale eye movements. Recurrence is common, which is why home self-treatment is useful.
Vestibular neuritis is sudden, severe, continuous spinning for days from an inflamed balance nerve, with heavy nausea and normal hearing, and it eases on its own over weeks.
Meniere's disease comes in attacks of vertigo lasting twenty minutes to a few hours, with fluctuating one-sided hearing loss, tinnitus, and a sense of fullness in the ear. That hearing pattern is what separates it from vestibular migraine. Vestibular migraine is common and often diagnosed late. It brings recurrent vertigo with motion and visual sensitivity lasting minutes to days, often with no headache during the attack, in someone with a personal or family history of migraine.
Persistent postural-perceptual dizziness is three months or more of non-spinning unsteadiness on most days, worse when upright and in busy visual places like supermarket aisles. It usually begins after an acute episode that has otherwise resolved.
Light-headedness on standing comes from blood pressure lagging behind the change in posture. It is checked by measuring blood pressure lying, then standing again at one and three minutes. Medication is the other big contributor, and the most reversible one, so a review of recent medicines is part of the work-up.
A small number of sudden, continuous vertigos come from the brainstem or cerebellum, including a posterior circulation stroke, and can arrive with no weakness or slurred speech at all. Their signs are neurological, and this is the one pattern to catch early.
What Helps
For the positional spinning of BPPV, a repositioning maneuver is the treatment, and it works in minutes. In the Epley maneuver a clinician moves your head through a set sequence of positions to roll the crystal back out of the canal. Across the pooled trials, a single Epley cleared vertigo in about 56% of people against 21% with a sham or no treatment (Hilton, Cochrane 2014). Expect to repeat it; a single session does not always clear the vertigo, and the cumulative success rate rises with repeat attempts.
The maneuver treats the posterior canal, where most BPPV sits. A crystal in the horizontal canal needs a different maneuver. The Epley does nothing for dizziness that is not positional: it does not touch vestibular neuritis, Meniere's, vestibular migraine, or light-headedness on standing. Brandt-Daroff exercises, done at home, also help but work more slowly than repositioning, so they sit second to the Epley.
After a clinician confirms the affected side and canal, the maneuver can be taught for home use. In a trial of people with confirmed posterior canal BPPV, a self-applied Epley cleared the vertigo in 95% within a week (Radtke, Neurology 2004). When a diagnosed BPPV came back, a guided system re-checked the canal and showed the matching maneuver. It resolved the recurrence in 72% of people, against 43% for a replay of the original video (Kim, JAMA Neurol 2023). Self-treatment rests on having the diagnosis first.
For a one-sided vestibular loss that has not settled, such as the aftermath of vestibular neuritis, vestibular rehabilitation retrains balance through graded eye, head, and balance exercises. Across the trials it more than doubled the odds of dizziness resolving, an odds ratio of 2.67, with no adverse effects recorded in any included trial (McDonnell, Cochrane 2015).
The evidence on steroids for vestibular neuritis points two ways. Given early, methylprednisolone raised how the balance organ recovered on caloric testing at twelve months, to 62% against 40% with placebo (Strupp, N Engl J Med 2004). That laboratory gain has not carried through to how people feel. Pooled trials found no benefit on vertigo at 24 hours or on dizziness-handicap scores at any point (Fishman, Cochrane 2011). The ear test improves while symptoms do not, so using steroids here is a judgment call.
For Meniere's disease and vestibular migraine, the usual drugs have weak evidence behind them. Betahistine, the drug most often prescribed for Meniere's, did not reduce attacks more than placebo over nine months. That held at either the standard 48 mg or a high 144 mg dose (Adrion, BMJ 2016). A low-salt diet and diuretics are widely used but thinly tested. For vestibular migraine only three small prevention trials exist, none large enough to settle a choice (Webster, Cochrane 2023). So doctors reuse the migraine-prevention drugs that work well for headaches, on the assumption they help this related condition too.
For persistent postural-perceptual dizziness, graded rehabilitation and visual desensitization help, and rest tends to entrench it. Vestibular rehabilitation gave small-to-moderate gains, and personalized desensitization glasses gave the largest effect seen, though that result rests on a single small trial (Suica, Front Neurol 2024).
The sedating anti-dizziness drugs, the vestibular suppressants such as meclizine and prochlorperazine, relieve severe nausea in the first day or two. Kept going, they blunt the brain's own recalibration, called central compensation, so recovery slows. In adults 65 and over, those who filled a suppressant prescription had over three times the rate of a fall needing care. That was measured within 60 days (Marmor, J Am Geriatr Soc 2025).
The Research & Studies
Everything here is based on the research we have collected and checked, sorted into groups and ordered with the strongest evidence first. Click any claim to open the studies behind it.
Vestibular
The Epley maneuver cleared vertigo in about 56% of people against 21% with a sham
Complete resolution of vertigo in about 56% of people after canalith repositioning against 21% after a sham or no treatment, an odds ratio of 4.42 (95% CI 2.62 to 7.44) across 5 trials and 273 participants. Conversion of the Dix-Hallpike test from positive to negative was more marked still.
Complete resolution of vertigo in about 56% of people after canalith repositioning against 21% after a sham or no treatment, an odds ratio of 4.42 (95% CI 2.62 to 7.44) across 5 trials and 273 participants. Conversion of the Dix-Hallpike test from positive to negative was more marked still. Measured in: Eleven mostly small randomized trials in adults with posterior canal benign paroxysmal positional vertigo, of which five contributed to the vertigo resolution estimate. This treats posterior canal BPPV and nothing else. It does not treat horizontal or anterior canal BPPV, which need different maneuvers, and it does nothing for light-headedness on standing, vestibular neuritis, Meniere's, medication side effects or non-positional dizziness. The contributing trials are small and follow-up is short.
Who this may not transfer to:The review reports roughly 1 man to 1.5 women. BPPV itself is about twice as common in women, so the trial mix is close to who has the condition.
The study · 1
Hilton and Pinder, the Epley (canalith repositioning) manoeuvre for benign paroxysmal positional vertigo · Cochrane Database Syst Rev 2014;(12):CD003162
Vestibular rehabilitation more than doubled the odds of dizziness resolving after one-sided vestibular loss (odds ratio 2.67)
Odds ratio 2.67 (95% CI 1.85 to 3.86) for resolution of dizziness against control or no intervention, across 4 trials and 565 participants, within a review of 39 studies and 2,441 participants. No adverse effects were recorded in any included trial.
Odds ratio 2.67 (95% CI 1.85 to 3.86) for resolution of dizziness against control or no intervention, across 4 trials and 565 participants, within a review of 39 studies and 2,441 participants. No adverse effects were recorded in any included trial. Measured in: 2,441 adults with unilateral peripheral vestibular dysfunction, including vestibular neuritis, vestibular schwannoma surgery and other one-sided losses. Rehabilitation cannot be blinded, so the dizziness outcomes are open to expectation effects in a way the physiological measures are not. The same review found that for BPPV specifically, repositioning maneuvers beat exercise-based rehabilitation in the short term, so this is evidence about vestibular loss, not about positional vertigo. There is not enough evidence to say which style of rehabilitation is best.
Who this may not transfer to:The review does not pool a sex breakdown across its 39 included studies, so the sex basis of the estimate is unknown.
The study · 1
McDonnell and Hillier, vestibular rehabilitation for unilateral peripheral vestibular dysfunction · Cochrane Database Syst Rev 2015;1(1):CD005397
The Epley maneuver improved symptoms about three times as often as control when done in general practice
Subjective symptom improvement in primary care, relative risk 3.14 (95% CI 1.96 to 5.02; 3 trials, 309 participants). In subspecialty settings, relative risk 2.42 (95% CI 1.64 to 3.56; 16 trials, 829 participants). Twenty-seven trials and 1,629 participants in total.
Subjective symptom improvement in primary care, relative risk 3.14 (95% CI 1.96 to 5.02; 3 trials, 309 participants). In subspecialty settings, relative risk 2.42 (95% CI 1.64 to 3.56; 16 trials, 829 participants). Twenty-seven trials and 1,629 participants in total. Measured in: Adults with benign paroxysmal positional vertigo treated in primary care or in otolaryngology and neurology clinics. Every outcome in this review was graded low or very low certainty. The objective outcome in primary care, conversion of the Dix-Hallpike test to negative, did not reach significance (relative risk 1.46, 95% CI 0.72 to 2.97, 206 participants), so the primary-care result rests mainly on how people said they felt.
Who this may not transfer to:The review does not report a sex breakdown across its included trials, so the sex basis of this pooled estimate is unknown.
The study · 1
Saishoji et al., Epley manoeuvre's efficacy for BPPV in primary-care and subspecialty settings, a systematic review and meta-analysis · BMC Prim Care 2023;24(1):262
Guided self-treatment cleared a recurrent BPPV in 72% against 43% for a video replay
Among the 128 participants who had a recurrence, vertigo resolved in 42 of 58 (72.4%) given a web-based system that re-diagnosed the canal and then showed the matching maneuver, against 30 of 70 (42.9%, about 43%) given a replay of the video matched to their original diagnosis (P<0.001).
Among the 128 participants who had a recurrence, vertigo resolved in 42 of 58 (72.4%) given a web-based system that re-diagnosed the canal and then showed the matching maneuver, against 30 of 70 (42.9%, about 43%) given a replay of the video matched to their original diagnosis (P<0.001). Measured in: 585 adults with previously diagnosed BPPV at South Korean university hospitals, mean age about 60, randomized 2017 to 2020 and followed to 2022. Everyone enrolled had a clinician-confirmed BPPV diagnosis first, so this says nothing about self-treating undiagnosed vertigo. The result rests on the 128 people who actually recurred, not on the 585 randomized, and 85% of participants managed to use the web system, which is a selected and motivated group. Two of the authors hold equity in DZMED, the company that holds the patent on the tested web-based self-diagnosis and treatment device, which is a commercial conflict of interest to weigh alongside the result.
Who this may not transfer to:64% women in the treatment arm and 71% in the control arm, so men are the smaller group and the estimate for them is less precise. The trial was conducted entirely in South Korea.
The study · 1
Kim et al., effect of self-treatment of recurrent benign paroxysmal positional vertigo, a randomized clinical trial · JAMA Neurol 2023;80(3):244-250
A self-applied Epley cleared vertigo in 95% within a week
After one week of daily self-treatment, positional vertigo and its nystagmus had gone in 95% of the 37 people taught a modified Epley procedure, against 58% of the 33 taught a modified Semont maneuver (P<0.001).
After one week of daily self-treatment, positional vertigo and its nystagmus had gone in 95% of the 37 people taught a modified Epley procedure, against 58% of the 33 taught a modified Semont maneuver (P<0.001). Measured in: 70 adults with posterior canal benign paroxysmal positional vertigo, taught the maneuver and treating themselves at home. There was no untreated control arm, so the comparison is between two self-treatments, not against doing nothing, and untreated BPPV resolves on its own in a meaningful share of people. Follow-up was one week. Much of the Semont failure was traced to people performing the technique incorrectly, not to the technique itself.
Who this may not transfer to:The report gives no sex breakdown for the two arms, so the sex basis of this result is unknown.
The study · 1
Radtke et al., self-treatment of benign paroxysmal positional vertigo, Semont manoeuvre versus Epley procedure · Neurology 2004;63(1):150-152
Steroids raised 12-month caloric recovery from vestibular neuritis to 62% against 40% with placebo
Mean improvement in peripheral vestibular function on caloric testing at 12 months was 62.4% with methylprednisolone against 39.6% (about 40%) with placebo (P<0.001). Valacyclovir gave 36.0% and added nothing when combined with the steroid.
Mean improvement in peripheral vestibular function on caloric testing at 12 months was 62.4% with methylprednisolone against 39.6% (about 40%) with placebo (P<0.001). Valacyclovir gave 36.0% and added nothing when combined with the steroid. Measured in: 141 adults with acute vestibular neuritis randomized within three days of symptom onset at a single German center. The outcome is a laboratory measure of how the ear responds to warm and cold water irrigation. It is not how dizzy people felt or how well they functioned, and the trial did not show that the two move together. One center, one steroid regimen, no long-term symptom outcome.
Who this may not transfer to:The trial report gives no sex breakdown in its abstract, so the sex basis of this result is unknown.
The study · 1
Strupp et al., methylprednisolone, valacyclovir, or the combination for vestibular neuritis · N Engl J Med 2004;351(4):354-361
Steroids did not speed symptom recovery from vestibular neuritis
Pooled across 4 trials and 149 participants, corticosteroids improved complete caloric recovery at one month (risk ratio 2.81) but not at 12 months, and showed no significant effect on vertigo at 24 hours or on Dizziness Handicap Inventory scores at any time point.
Pooled across 4 trials and 149 participants, corticosteroids improved complete caloric recovery at one month (risk ratio 2.81) but not at 12 months, and showed no significant effect on vertigo at 24 hours or on Dizziness Handicap Inventory scores at any time point. Measured in: 149 adults with idiopathic acute vestibular dysfunction across four small placebo-controlled trials. Four small trials of low methodological quality. At this sample size, failing to demonstrate a symptomatic benefit does not establish that none exists, and the review's own conclusion is that the evidence is insufficient, not that steroids do not work.
Who this may not transfer to:The review does not report a pooled sex breakdown across its four included trials.
The study · 1
Fishman, Burgess and Waddell, corticosteroids for the treatment of idiopathic acute vestibular dysfunction (vestibular neuritis) · Cochrane Database Syst Rev 2011;(5):CD008607
Betahistine did not reduce Meniere's attacks more than placebo
Over nine months of treatment, attack rate ratios against placebo were 1.036 (95% CI 0.942 to 1.140) for 48 mg a day and 1.012 (0.919 to 1.114) for 144 mg a day. There was no difference between the three groups (P=0.759). Treatment was well tolerated.
Over nine months of treatment, attack rate ratios against placebo were 1.036 (95% CI 0.942 to 1.140) for 48 mg a day and 1.012 (0.919 to 1.114) for 144 mg a day. There was no difference between the three groups (P=0.759). Treatment was well tolerated. Measured in: 221 adults aged 21 to 80 (mean 56) with definite unilateral or bilateral Meniere's disease across 14 German tertiary referral centers. Attack frequency was recorded by patient diary, so an effect on attack severity or duration, not count would not have been captured well. The trial does not address hearing outcomes, tinnitus, or treatment of the acute attack, and it recruited from tertiary referral centers, where the disease is more established.
Who this may not transfer to:The trial abstract gives no sex breakdown. Meniere's disease is slightly more common in women, so a male-skewed sample would be unrepresentative and cannot be ruled out from the published summary.
The studies · 2
Adrion et al., efficacy and safety of betahistine treatment in patients with Meniere's disease (BEMED trial) · BMJ 2016;352:h6816
Webster et al., systemic pharmacological interventions for Meniere's disease · Cochrane Database Syst Rev 2023;2(2):CD015171
Brandt-Daroff exercises did not clear BPPV faster than the Epley or Semont maneuvers
Across 10 randomized trials and 880 people with BPPV, Brandt-Daroff exercises did not reduce symptoms or speed recovery in posterior canal BPPV relative to the Epley and Semont maneuvers.
Across 10 randomized trials and 880 people with BPPV, Brandt-Daroff exercises did not reduce symptoms or speed recovery in posterior canal BPPV relative to the Epley and Semont maneuvers. Measured in: 880 adults with benign paroxysmal positional vertigo, 63.6% female. This is a narrative synthesis with no pooled estimate, and the comparator is another active treatment, not nothing, so it places Brandt-Daroff second to repositioning, not showing it does nothing at all. The included trials vary in how they defined recovery and most had short follow-up.
Who this may not transfer to:63.6% of participants were women, which roughly matches who gets BPPV.
The study · 1
Alashram, effectiveness of Brandt-Daroff exercises in the treatment of benign paroxysmal positional vertigo, a systematic review of randomized controlled trials · Eur Arch Otorhinolaryngol 2024;281(7):3371-3384
Rehabilitation and visual desensitization eased persistent postural-perceptual dizziness
Across 13 randomized trials and 618 patients, vestibular rehabilitation produced standardized mean differences of 0.04 to 0.52 on dizziness handicap and severity. Visual desensitization using personalized glasses produced the largest effects seen, 1.09 for severity and 1.05 for handicap.
Across 13 randomized trials and 618 patients, vestibular rehabilitation produced standardized mean differences of 0.04 to 0.52 on dizziness handicap and severity. Visual desensitization using personalized glasses produced the largest effects seen, 1.09 for severity and 1.05 for handicap. Measured in: 618 adults with persistent postural-perceptual dizziness of mild to moderate severity. Almost every trial tested a single intervention, not the multimodal combination used in practice, the effect sizes for rehabilitation are small, and the largest effect rests on one small visual desensitization trial that has not been replicated. Participants had mild to moderate symptoms, so the most disabled group is not represented.
Who this may not transfer to:The review does not report a pooled sex breakdown across the 13 trials.
The study · 1
Suica et al., comparative effectiveness of non-pharmacological treatments in patients with persistent postural-perceptual dizziness, a systematic review and effect sizes analyzes · Front Neurol 2024;15:1426566
Acupuncture rated more effective than medication for cervical vertigo, in high-risk-of-bias Chinese trials
Pooled across 10 randomized trials and 914 participants, acupuncture was rated more effective than conventional medication on a composite clinical rating (relative risk 1.27, 95% CI 1.19 to 1.34), with improvement in vertigo (1.15, 1.03 to 1.28) and headache (1.30, 1.11 to 1.53).
Pooled across 10 randomized trials and 914 participants, acupuncture was rated more effective than conventional medication on a composite clinical rating (relative risk 1.27, 95% CI 1.19 to 1.34), with improvement in vertigo (1.15, 1.03 to 1.28) and headache (1.30, 1.11 to 1.53). Measured in: 914 adults diagnosed with cervical vertigo, 467 receiving acupuncture and 447 controls, in trials enrolling 33 to 120 people each. Every included trial was conducted in China and every one was rated high risk of bias for randomization, allocation concealment and blinding. GRADE certainty was low to very low across all outcomes, the funnel plot was asymmetric, and only 3 of 10 trials reported adverse events. The outcome is a subjective composite clinical rating, not a validated scale. Cervical vertigo itself has no confirmatory test.
Who this may not transfer to:No pooled sex breakdown is reported. All participants were in China, so the result has not been tested in a Western population.
The study · 1
Hou et al., the efficacy of acupuncture for the treatment of cervical vertigo, a systematic review and meta-analysis · Evid Based Complement Alternat Med 2017;2017:7597363
Ban Xia Bai Zhu Tian Ma Tang added to standard drugs improved a composite vertigo rating, in low-quality trials
Pooled across 27 randomized trials and 2,796 patients, the formula added to conventional anti-vertigo drugs improved a composite clinical efficacy rating (relative risk 1.20, 95% CI 1.16 to 1.24; 2,446 participants), with improvements also reported in vertebral and basilar artery blood flow velocity.
Pooled across 27 randomized trials and 2,796 patients, the formula added to conventional anti-vertigo drugs improved a composite clinical efficacy rating (relative risk 1.20, 95% CI 1.16 to 1.24; 2,446 participants), with improvements also reported in vertebral and basilar artery blood flow velocity. Measured in: 2,796 patients in China with vertebrobasilar insufficiency vertigo. The review's own conclusion is that efficacy and safety remain uncertain because of the limited number of trials and their low methodological quality, and adverse events were mentioned in only six of 27 trials. Every trial was conducted in China. Vertebrobasilar insufficiency as a chronic diagnosis has largely been retired in Western practice in favor of specific vestibular diagnoses, so it is unclear which readers this population maps onto.
Who this may not transfer to:No pooled sex breakdown is reported across the 27 trials.
The study · 1
Guo et al., the effect of Chinese herbal medicine Banxia Baizhu Tianma Decoction for the treatment of vertebrobasilar insufficiency vertigo, a systematic review and meta-analysis of randomized controlled trials · Complement Ther Med 2017;31:27-38
Measurement And Diagnosis
A three-step bedside eye exam was 100% sensitive and 96% specific for stroke in specialist hands
In 101 patients with acute vestibular syndrome, the HINTS examination (head impulse test, nystagmus pattern, test of skew) was 100% sensitive and 96% specific for stroke. Early diffusion-weighted MRI was falsely negative in 12% of the strokes, every one of those scanned within 48 hours of onset.
In 101 patients with acute vestibular syndrome, the HINTS examination (head impulse test, nystagmus pattern, test of skew) was 100% sensitive and 96% specific for stroke. Early diffusion-weighted MRI was falsely negative in 12% of the strokes, every one of those scanned within 48 hours of onset. Measured in: 101 adults presenting with acute vestibular syndrome and at least one stroke risk factor at a single US center; 76 turned out to have a central lesion, 69 of them ischemic strokes. What could explain it instead: The cohort was deliberately enriched for stroke risk: three quarters of these patients had a central cause, which is the reverse of an unselected clinic population where most acute vertigo is peripheral. Sensitivity and specificity transfer better than the predictive values, which do not transfer at all.. The examiners were neuro-otologists. In a meta-analysis of the same examination performed by emergency physicians, sensitivity fell to 83% and specificity to 44%, and the authors concluded it cannot be used alone by non-specialists to rule out stroke. A normal early MRI does not exclude a posterior circulation stroke.
Who this may not transfer to:The report does not give a sex breakdown, so the sex basis of this diagnostic accuracy estimate is unknown.
The studies · 2
Kattah et al., HINTS to diagnose stroke in the acute vestibular syndrome, three-step bedside oculomotor examination more sensitive than early MRI diffusion-weighted imaging · Stroke 2009;40(11):3504-3510
Ohle et al., can emergency physicians accurately rule out a central cause of vertigo using the HINTS examination? A systematic review and meta-analysis · Acad Emerg Med 2020;27(9):887-896
Headache And Migraine
Only three small trials test drug prevention of vestibular migraine, and none settles it
Only three placebo-controlled randomized trials exist, totaling 209 participants, and they cover only metoprolol and flunarizine. All outcomes were graded low or very low certainty, and no efficacy conclusion could be drawn either way.
Only three placebo-controlled randomized trials exist, totaling 209 participants, and they cover only metoprolol and flunarizine. All outcomes were graded low or very low certainty, and no efficacy conclusion could be drawn either way. Measured in: 209 adults with vestibular migraine across three trials. This is a description of how little has been tested, not a finding about the drugs. In practice, migraine preventives with good evidence for headache are used here, which is extrapolation from a different outcome in a related condition, and the extrapolation has not been checked in trials of this size.
Who this may not transfer to:The review does not report a pooled sex breakdown. Vestibular migraine is substantially more common in women, so the trials are unlikely to be balanced.
The study · 1
Webster et al., pharmacological interventions for prophylaxis of vestibular migraine · Cochrane Database Syst Rev 2023;4(4):CD015187
How to Tell a Dangerous Cause
Sudden, continuous vertigo that lasts for days, called an acute vestibular syndrome, is usually vestibular neuritis, but a small share is a posterior circulation stroke. Telling them apart at the bedside depends on a three-part eye examination, plus a few features that point to the brain instead of the ear.
The examination is called HINTS: a head-impulse test, a look at the nystagmus, and a test of eye alignment (skew). In specialist hands it was 100% sensitive and 96% specific for stroke (Kattah, Stroke 2009). It caught strokes that imaging missed: early diffusion-weighted MRI was falsely negative in 12% of strokes scanned within the first 48 hours.
A normal early scan does not rule out a posterior circulation stroke.
The exam is only as good as the examiner. Performed outside specialist hands, its sensitivity fell to 83% and its specificity to 44%, so a generalist cannot use it alone to rule stroke out (Ohle, Acad Emerg Med 2020).
How It Works
The inner ear holds the balance organs: three fluid-filled semicircular canals that sense rotation, and two chambers whose crystals sense gravity and straight-line movement. Each ear sends a steady stream of signals to the brain, and the brain balances the two sides against each other. Most vertigo is a mismatch in that stream.
In BPPV a crystal has fallen into a canal, so a head movement drags the fluid and fires the canal when it should be quiet. The brain registers the false signal as spinning. The repositioning maneuver uses gravity to roll the crystal back to the chamber it came from.
In vestibular neuritis one side stops signalling, so the brain receives a lopsided input, and over weeks it recalibrates to the new baseline. That recalibration is the central compensation that rest and sedating drugs slow, and it is why moving as the nausea allows helps recovery.
A central cause is different: it sits in the brain's own balance pathways, and its signs are neurological.
Go Deeper
- Balance and falls: the balance-challenging exercise that steadies you and cuts falls, plus the standing blood-pressure check and the inner-ear crystal, all in one place.
- Headache and migraine: the migraine mechanism behind vestibular migraine, and the preventives that work best for the headache form.
- Tai chi and qi gong: the mind-body movement with the most randomized evidence for balance and fewer falls in older adults.
- Anxiety: the fear-and-avoidance loop that can keep dizziness going after the original trigger has healed, and what quiets it.
The Chinese Medicine View
眩暈 xuan yun, dizziness and vertigo, is one of the better-developed symptom categories in Chinese medicine, and the pattern points to what supports it. It is a way of reading the whole picture that sits alongside conventional medicine. Xuan yun has been named and treated in this system for well over a thousand years, and that endurance is worth weighing even where trials are thin.
Dizziness with headache, tinnitus, a red face and irritability, worse with stress, anger or alcohol and in the afternoon. Liver Yang has risen upward, so the treatment settles it and directs it back down.
A heavy, muddy, wrapped head, with nausea, a full chest and poor appetite, worse in damp weather and after rich food. The treatment dries the Damp and opens the middle.
Dizziness that comes on with exertion or on standing, worse when tired and better for lying down, with a pale complexion, palpitations and poor sleep. The treatment builds Qi and Blood.
Gradual dizziness over years with tinnitus, hearing that is fading, a sore lower back and knees, and poor memory. The treatment nourishes the root.
Ban Xia Bai Zhu Tian Ma Tang is the classical formula for the Phlegm-Damp vertigo, and it fits the heavy, muddy-headed, nauseated picture closely. Pooled Chinese trials reported it improving a composite vertigo rating when added to conventional drugs (Guo, Complement Ther Med 2017). Every trial was conducted in China, and most were rated high risk of bias. The diagnosis they used, vertebrobasilar insufficiency, has largely been retired in Western practice, so the result is preliminary. For the Liver Yang picture the classical choice is Tian Ma Gou Teng Yin, and GB-20 Feng Chi is the point most reached for in dizziness across patterns.
Acupuncture has been studied for what Chinese trials call cervical vertigo, and the pooled result rated it more effective than conventional medication (Hou, Evid Based Complement Alternat Med 2017). The same limitations apply: the trials were small and at high risk of bias. Cervicogenic dizziness is a contested diagnosis in Western neurology, with no confirmatory test, so this evidence stays preliminary.
Chinese medicine sends sudden, continuous vertigo with any neurological sign to a physician first, as a medical emergency before it is a pattern. The tests rule out the dangerous causes, and the pattern guides what supports the common ones.
Cautions
Extra restraintEverything to be aware of is here, in one place. This practice suits most healthy people; a few situations call for real care.
Vestibular suppressants tripled the rate of falls in adults 65 and over (hazard ratio 3.33)
Among 190,348 people aged 65 and over presenting with dizziness, the 60,658 who filled a vestibular suppressant prescription had a hazard ratio of 3.33 (95% CI 1.93 to 5.72) for a fall resulting in a medical encounter within 60 days. Anxiolytics carried a hazard ratio of 4.13 and anti-emetics 2.17. Eight percent of suppressant users fell within 60 days. Vestibular suppressants also relieve severe acute nausea and vomiting, which is a benefit in the first day or two. The finding argues against continuing them, not against ever using them.Marmor, Karaca-Mandic and Adams, vestibular suppressant utilization and subsequent falls among patients 65 years and older with dizziness in the United States
When not to do the maneuver at home
The self-applied Epley is for people whose BPPV has been diagnosed and whose affected side is known. See a clinician first if the diagnosis has not been confirmed, or if the spinning is not the brief positional kind. See one first, too, with significant neck problems, recent neck injury or surgery, carotid artery disease, or unstable heart disease. If a home attempt brings on new neurological symptoms, stop and get assessed.
Sedating anti-dizziness drugs and older adults
Vestibular suppressants such as meclizine, prochlorperazine and cinnarizine ease severe nausea for a day or two. Continued, they slow recovery and raise falls in older adults, so they are for short-term use. If you have been on one for weeks, that is worth reviewing with a prescriber.
Some antibiotics can damage both balance organs
A few drugs are toxic to the inner ear. The aminoglycoside antibiotics, gentamicin above all, can cause a lasting two-sided vestibular loss. It shows up as unsteadiness and bouncing vision when the head moves; it does not spin. If you are receiving one and notice these, raise it promptly with the team giving it.
Sourcing Chinese herbs and formulas safely
The classical vertigo formulas belong with a qualified herbalist and a supplier who tests their material. Species substitution is a hazard in the herb trade, and a formula matched to the wrong pattern can worsen the picture. A hot, red, or clearly central presentation is a reason to seek medical care first.
Most dizziness is safe to stay active with. Be sensible, and consult a licensed practitioner if you have questions, or promptly if any of the warning signs below fit you.
When to See Someone
Most dizziness is not dangerous. A few uncommon patterns need urgent care. Early imaging can be falsely reassuring: diffusion-weighted MRI misses 12% of posterior circulation strokes scanned within 48 hours. Say plainly what your symptoms are and ask for a neurological assessment. Go to an emergency department now if you have:
- Sudden vertigo that has not stopped, together with any of a new severe headache, double vision, slurred or muddled speech, a drooping face, weakness or numbness anywhere, or trouble swallowing. This can be a posterior circulation stroke, which often arrives with none of the usual weakness or slurred speech(seek urgent care)
- Trouble walking that is out of proportion to the spinning, or falling repeatedly to one side, a sign of a central (brain) cause(seek urgent care)
- Nystagmus that beats up and down, or is direction-changing as you look one way and then the other. Inner-ear nystagmus beats one way whichever way you look(seek urgent care)
- New one-sided hearing loss, or a new severe headache, arriving with the vertigo(seek urgent care)
- Sudden severe neck pain or headache, especially after neck trauma, heavy lifting or a neck manipulation, which can signal a vertebral artery dissection
- Fainting, palpitations or chest pain alongside the dizziness, which point to a heart-rhythm cause
- If you are 65 or over and have been on a sedating anti-dizziness drug (a vestibular suppressant) beyond the first day or two, review it with a prescriber. Continued use raises falls and slows recovery.
None of this is meant to alarm you. Most dizziness comes from causes that settle or respond to a simple maneuver, and the signs above are the uncommon patterns worth checking promptly. Naming them is what lets you tell them apart.
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Other pages this one connects to, by the evidence they share, the outcomes they touch, and the ground they cover.
All 17 sources on this page independently checked and cross-referenced.
Thomas Dehli, Founder & Editor, Sacred Lotus
Sacred Lotus has published Chinese medicine reference material since 2001. Integrative pages are held to the same standard as the herb and formula library: cite the source, grade the claim at its real strength, and say where the research has not looked. This page is educational and it is not medical advice. Last reviewed and updated August 9, 2026.
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How confidently the research supports a claim. Strength describes the evidence, not our endorsement.