Vestibular Disorders

When is dizziness an emergency?

Most dizziness is not a stroke, which is why the warning signs matter. In a population-based study of people over 44 who came to the emergency department with dizziness, vertigo or imbalance, 3.2% had a stroke or TIA, and 0.7% of those whose dizziness came with no other neurological symptom. Imbalance, more than dizziness, pointed toward stroke.⁠¹¹

For dizziness that is not sudden and comes with none of these signs, NIDCD suggests seeing your doctor if you feel unsteady, feel the room spin even briefly, feel you are moving while still, lose your balance and fall, feel lightheaded or faint, have blurred vision, or feel disoriented.⁠¹

What are vestibular disorders, and how common are they?

Your sense of balance relies on signals to the brain from your eyes, your inner ears, and the muscles and touch sensors in your legs. The inner-ear part, the vestibular system or labyrinth, tells your brain when your head turns and where it sits relative to gravity. A balance disorder is a problem in the inner ear, the brain, or another system that makes you feel unsteady or dizzy, as if you or the room were moving, spinning or floating.⁠¹

Dizziness means different things to different people: a fleeting faint feeling for one, an intense spinning that lasts a long time (vertigo) for another.⁠¹

They are common, and more so with age. About 15% of American adults, 33 million people, had a balance or dizziness problem in 2008, and the risk rises as you get older.⁠¹ When a national survey tested the standing balance of 5,086 US adults aged 40 and older, 35.4% showed vestibular dysfunction; the odds rose with age and were 70% higher in people with diabetes.⁠¹²

What are the symptoms of a vestibular disorder?

NIDCD lists these as the main symptoms; nausea, vomiting, changes in heart rate and blood pressure, and fear, anxiety or panic can come with them, and lasting symptoms can lead to fatigue and depression.⁠¹

• Dizziness or vertigo (spinning)
• Falling, or nearly falling
• Staggering when you walk
• Lightheadedness, faintness or floating
• Blurred vision
• Confusion or disorientation

Why does the type of dizziness matter?

Because the treatments are genuinely different, and one of them is quick. Dizziness gets treated as a single complaint far too often, and the result is that the most common inner-ear cause is routinely handled with the wrong intervention. In a German population study, 86% of adults with BPPV sought medical care, interrupted their daily activities or took sick leave, yet only 8% received effective treatment.⁠¹³ The US guideline for BPPV was written partly to cut the inappropriate use of vertigo-suppressing medicines and scans, and to increase the use of repositioning maneuvers.⁠²

Types of vestibular disorders and how to tell them apart

There are more than a dozen balance disorders.⁠¹ These are the ones behind most vertigo, and how they differ:

What is BPPV? Brief spinning triggered by head position

The most common inner-ear cause of vertigo, produced by displaced crystals in the inner ear.⁠³ Tiny calcium carbonate grains (otoconia) come loose and tumble into one of the semicircular canals, so a change in head position sends the brain wrong information.⁠¹ Rolling over in bed, looking up, bending over or lying down sets off intense spinning that usually lasts 15 to 45 seconds and then stops; you may also feel lightheaded, off balance or sick.⁠¹⁴

BPPV can follow a head injury or develop just from getting older, though most often no cause is found.⁠^1,14 In a German population study of adults, 2.4% had had BPPV at some point in their lives, and an episode lasted a median of two weeks.⁠¹³

It is treated with a repositioning maneuver, not with exercises, and one session often works, though some people need it repeated.⁠¹ If you have positional vertigo and were handed a generic balance exercise sheet, that is worth questioning: for BPPV, repositioning maneuvers work better in the short term than exercise-based rehabilitation.⁠¹⁷

RelatedBenign paroxysmal vertigo of childhood

Vestibular neuritis vs. labyrinthitis: what is the difference?

Sudden, severe, constant vertigo lasting at least a day, with unsteadiness and often nausea or vomiting.⁠³ Vestibular neuritis is inflammation of the vestibular nerve, which a virus can cause; labyrinthitis is an infection or inflammation of the inner ear, often alongside an upper respiratory infection such as the flu.⁠¹ The difference between the two is hearing: labyrinthitis brings ear pain, reduced hearing or ringing, and vestibular neuritis does not.⁠³

The spinning eases over weeks, but if the inner-ear loss persists, the balance system does not fully recover by itself. Medicines for vertigo, and sometimes steroids, may shorten the worst of it.⁠³ Both are usually followed by vestibular rehabilitation, which retrains the balance system rather than waiting for it to recover on its own; the physical therapy guideline recommends offering it from the acute stage on.⁠¹⁵

What is Ménière's disease?

Episodes of vertigo lasting 20 minutes to 12 hours, with fluctuating hearing loss, ringing (tinnitus) and a sense of fullness in the ear.⁠^4,18 It usually affects one ear, is more likely to begin between ages 40 and 60, and affects about 615,000 people in the United States. Some people have attacks severe enough to make them fall, called drop attacks.⁠⁴

The pattern, episodic with hearing involvement, is what distinguishes it, and an ear, nose and throat doctor (otolaryngologist) usually diagnoses and manages it. There is no cure yet. Options include limiting salt, medicines that shorten attacks, injections, surgery when nothing else has worked, and vestibular rehabilitation for chronic balance problems.⁠⁴

What is vestibular migraine?

Recurring vertigo, or dizziness brought on by head movement, in someone with a history of migraine, with migraine symptoms during at least some episodes. Episodes are moderate to severe and last between 5 minutes and 72 hours, and the diagnosis also requires that other causes be ruled out.⁠¹⁶

What is PPPD (persistent postural-perceptual dizziness)?

Dizziness, unsteadiness or non-spinning vertigo on most days for three months or more, worse when upright, when moving or being moved, and in busy visual surroundings: supermarket aisles, patterned floors, scrolling screens.⁠⁵

It often begins after something that upset balance, such as a vestibular disorder, another illness or psychological distress.⁠⁵ Tests and scans usually stay normal, yet PPPD is diagnosed on its own positive criteria. The dizziness is real, and it responds to tailored treatment: vestibular rehabilitation, serotonergic medicines and cognitive behavioral therapy.⁠⁶

Other inner-ear causes of vertigo

Less common causes include a perilymph fistula, a leak of inner-ear fluid into the middle ear after a head injury, pressure change or ear surgery, which causes unsteadiness that worsens with activity; and mal de debarquement syndrome, a rocking or swaying feeling after a cruise or other sea travel that usually settles within hours or days.⁠¹

When is a balance problem not vestibular?

Balance depends on three inputs: vision, the inner ear, and the muscles and touch sensors in the legs. Losing any one of them produces unsteadiness that is not a vestibular problem at all.⁠¹

• Reduced sensation in the feet, one of the inputs balance relies on.⁠¹ → Peripheral neuropathy
• Blood pressure dropping on standing, which causes dizziness when you get up too quickly.⁠¹
• Medication. Tranquilizers, sedatives, antidepressants and even some over-the-counter medicines can affect balance.⁠¹⁹ A medication review is worth asking for: bring a list of everything you take, with doses.⁠¹
• Joint and eye problems, such as arthritis or an eye muscle imbalance.⁠¹
• Neurological conditions, weakness and deconditioning: weakness, slowness, tremor or rigidity make it harder to recover from a stumble.⁠^1,19

RelatedFalls and balance

How are vestibular disorders diagnosed?

Mostly on history (what triggers it, how long it lasts, and whether hearing is involved), supported by specific bedside tests rather than by imaging. Scans are used to rule things out, not to make the diagnosis.⁠^2,3,4

Positional testing can demonstrate BPPV directly and, in the same appointment, treat it.⁠^14,20 In the Dix-Hallpike test you are brought from sitting to lying with the head turned 45 degrees to one side and slightly extended; spinning with a characteristic twisting, upbeating eye movement confirms the common posterior-canal type, and a roll test lying on your back checks for the side-canal type.⁠²

Other tests may include a hearing test, blood tests, video nystagmography (which records eye movements), imaging of the head, posturography on a moving platform, and rotational chair testing; several may be needed.⁠¹ Hearing assessment separates the conditions that involve the ear from those that do not.⁠⁴ Normal imaging and normal hearing tests do not mean nothing is wrong: for PPPD in particular, they are the expected result.⁠⁶

When BPPV meets the diagnostic criteria and nothing else points elsewhere, the guideline recommends against imaging and against further vestibular testing.⁠²

What to tell your doctor about dizziness

NIDCD suggests preparing answers to these before the appointment:⁠¹

• What the dizziness feels like
• Whether movement sets it off
• How long each episode lasts
• Hearing changes, ringing or headache
• Any falls: when, where, how
• Every medicine, with doses

Who treats dizziness: doctor, ENT, audiologist or physical therapist?

• Your primary care doctor may refer you to an otolaryngologist and an audiologist.⁠¹
• An otolaryngologist (ENT), a physician and surgeon for ear, nose and throat disorders, first checks whether another health condition or a medicine is to blame, and usually manages Ménière's disease.⁠^1,4
• An audiologist is a clinician who specializes in how the hearing and vestibular systems work; for BPPV, an ENT or audiologist may perform the Epley maneuver.⁠¹
• A physical therapist, ideally one with vestibular rehabilitation training or a neurologic specialty, performs positional tests and repositioning maneuvers and leads vestibular rehabilitation.⁠^14,15
• Emergency care for any stroke sign, sudden hearing loss, or a danger sign after a head injury.⁠^7,9,10

RelatedPhysical therapy for adults

How are vestibular disorders treated?

BPPV: a repositioning maneuver, performed by someone trained in it. Not exercises, and usually not medication: the guideline advises against routinely treating BPPV with vestibular suppressant medicines such as antihistamines or benzodiazepines.⁠²

Vestibular neuritis and labyrinthitis: medical assessment first where hearing is involved, then vestibular rehabilitation.⁠^9,15 Rehabilitation deliberately provokes symptoms in a graded way, which is why it often feels worse before it feels better: dizziness can rise during the first several weeks, and most people then improve.⁠¹⁵

Ménière's disease: medical management, directed by an ENT, with vestibular rehabilitation for chronic imbalance.⁠⁴

Vestibular migraine: the diagnosis comes first, because it rests on a migraine history and on ruling out other causes.⁠¹⁶

PPPD: combined approaches, including vestibular rehabilitation adapted for it, serotonergic medicines and cognitive behavioral therapy.⁠⁶

RelatedVestibular rehabilitation: what treatment involves

What is the Epley maneuver, and how is BPPV treated?

The Epley maneuver, also called a canalith repositioning procedure, moves your head and body through a series of positions to guide the loose crystals out of the canal and back into the utricle, where they no longer set off spinning.⁠^1,14

The evidence is strong. The otolaryngology guideline makes a strong recommendation that clinicians treat the common posterior-canal BPPV with a repositioning procedure, or refer to someone who can.⁠² In a Cochrane review of 11 randomized trials in 745 adults aged 18 to 90, vertigo resolved in 56% after the Epley maneuver against 21% after a sham maneuver or no treatment (five trials, 273 people). The trials were mostly small, with short follow-up.⁠²¹

Other maneuvers. Results with the Semont and Gans maneuvers were comparable to the Epley, and the Epley did better than Brandt-Daroff exercises.⁠²¹

Side effects are usually minor. Nausea during the maneuver affected 16.7% to 32% of people, some could not tolerate it because of neck problems, and no serious adverse effects were reported.⁠²¹

Afterward you do not need to sleep upright or avoid positions: the guideline recommends against restrictions after the procedure, and asks clinicians to reassess within one month to confirm the vertigo has resolved.⁠²

No medicine cures BPPV, and in some cases medicine can delay recovery.⁠¹⁴ BPPV can also settle by itself (an episode lasted a median of two weeks in the German study), so watching and waiting with follow-up is an option the guideline allows, as is vestibular rehabilitation, alone or with a clinician.⁠^2,13

Can BPPV come back?

Yes. It recurred in 36% of people after treatment in the Cochrane review, and APTA puts it at about half of people within three years; it is more likely to recur after a head injury.⁠^14,21 The physical therapist repeats the maneuver that fits, and knowing the symptoms lets you keep yourself safe until you can get help.⁠¹⁴

What is vestibular rehabilitation therapy, and does it work?

Vestibular rehabilitation is an exercise program, led by a physical therapist, that helps the brain adapt to or work around a balance system that is not working fully. It combines four parts: gaze stabilization, habituation, balance and gait training, and walking for endurance.⁠¹⁵

Does it work? Yes, on strong evidence for inner-ear (peripheral) vestibular loss. The 2022 Academy of Neurologic Physical Therapy guideline, based on 67 studies, makes strong recommendations to offer it to adults with loss on one side or both, in the acute, subacute and chronic stages, and to offer supervised sessions, which improved outcomes and adherence.⁠¹⁵ A Cochrane review of 39 trials in 2,441 adults found moderate to strong evidence that it is safe and effective for one-sided peripheral vestibular loss; people who did it were more likely to have less frequent dizziness (odds ratio 2.67).⁠¹⁷

Where the evidence is thinner. The guideline may not apply to central (brain) vestibular disorders, and people with loss on both sides may not improve as much as those with one-sided loss.⁠¹⁵ For BPPV, repositioning maneuvers beat exercise in the short term, though the two combined help longer-term recovery.⁠¹⁷

Vestibular rehabilitation exercises: gaze stabilization, habituation and balance

• Gaze stabilization: moving your head while keeping your eyes on a target, still or moving. Eye movements alone, without head movement, are not recommended for this.⁠¹⁵
• Habituation: repeating, in a graded way, the body or visual motions that provoke mild to moderate dizziness, so the response fades.⁠¹⁵
• Balance and gait training, standing and moving, at least 20 minutes a day for four to six weeks in chronic one-sided loss.⁠¹⁵
• Walking for endurance.⁠¹⁵

Gaze exercises are typically done three times a day, for at least 12 minutes a day, in the acute stage, and three to five times a day, for at least 20 minutes a day over four to six weeks, in chronic one-sided loss, alongside weekly clinic visits. The guideline rates these doses as moderate to weak evidence.⁠¹⁵

RelatedWhat a course of vestibular rehabilitation involves

What happens at the first visit, and how is progress measured?

The physical therapist starts with questions: what the dizziness feels like, what sets it off and how long it lasts, then your home or work setting and activity level.⁠^14,20 The exam may include how you walk, balance tests, and positional tests that watch your eyes for the movements that identify BPPV. You set goals together, and in many cases treatment starts at the first visit.⁠^14,20

A course of therapy for vestibular loss, as the guideline describes it, pairs weekly clinic visits with a daily home program for several weeks; BPPV often needs one session or a few.⁠^1,15

How progress is measured. Therapists use questionnaires such as the Dizziness Handicap Inventory, which rates the handicap dizziness causes, and the Activities-specific Balance Confidence Scale, alongside gait and balance tests; there is no agreed core set. Reasons to stop include reaching your main goals, symptoms resolving, balance and vestibular function returning to normal, or progress leveling off.⁠¹⁵

Can a concussion cause dizziness, and does therapy help?

Dizziness and balance problems are recognized symptoms of a concussion or mild traumatic brain injury, and most people feel better within a couple of weeks.⁠¹⁰ A head injury can also set off BPPV or, less often, a perilymph fistula.⁠¹ Dizziness that lasts after a concussion is worth a specific assessment, and the guide to concussion in adults covers recovery, return to work and return to sport.

Rehabilitation helps. In a randomized trial of 31 people aged 12 to 30 with persisting dizziness, neck pain or headaches after a sport concussion, 73% of those who added vestibular and neck physical therapy were cleared to return to sport within eight weeks, against 7% of the control group.⁠²²

After any head injury, call 911 for a headache that keeps getting worse, repeated vomiting, slurred speech, weakness or numbness, seizures, one pupil larger than the other, confusion, or drowsiness you cannot be woken from.⁠¹⁰

RelatedTraumatic brain injury in adults

Does dizziness raise the risk of falling in older adults?

More than one in four adults aged 65 and older falls each year, fewer than half tell their doctor, and falling once doubles the chance of falling again.⁠¹⁹

Dizziness raises that risk. In the national survey above, adults with vestibular dysfunction who reported dizziness had 12 times the odds of falling.⁠¹² The BPPV guideline asks clinicians to check people with BPPV for poor mobility or balance, a lack of support at home and a higher risk of falling.⁠² The rehabilitation guideline recommends offering therapy especially to people over 50 with unsteadiness, near-falls or falls, and lists reduced fall risk among its benefits.⁠¹⁵

Practical steps at home: avoid walking in the dark, wear low-heeled or walking shoes outdoors, use a cane or walker if you need one, and add handrails.⁠¹ Other fall risks worth reviewing with your doctor are leg weakness, vision problems, foot pain or poor footwear, and medicines such as sedatives. An older adult who falls and hits their head should see a doctor right away.⁠¹⁹

RelatedStaying independent at home

Can you drive or work with vertigo?

Ask your doctor whether it is safe for you to drive.⁠¹ Vestibular loss that the brain has not yet compensated for can affect driving and work as well as everyday activities.⁠¹⁵

Time off is common: in the German population study, 86% of people with BPPV sought medical care, interrupted their daily activities or took sick leave.⁠¹³ At work, the same changes that help at home apply, such as handrails.⁠¹

If you think you are having a stroke, do not drive yourself to the hospital: call 9-1-1 so treatment can begin in the ambulance.⁠⁷

Does Medicare cover vestibular rehabilitation?

Medicare Part B helps pay for medically necessary outpatient physical therapy, including therapy to improve or maintain your function or slow decline, once your doctor or another provider certifies that you need it. After the Part B deductible you pay 20% of the Medicare-approved amount, and there is no limit on how much Medicare pays for medically necessary outpatient therapy in a year.⁠²³ The deductible is $283 in 2026.⁠²⁴

The KX threshold is not a cap. Once your physical therapy and speech-language pathology charges for the year pass $2,480 in 2026 (occupational therapy has its own $2,480), the clinic adds the KX modifier to each claim to confirm the care is medically necessary, backed by your records; claims above it without the modifier are denied. Above $3,000, claims can be chosen for targeted medical review, though not all are.⁠²⁵

Medicare Advantage plans must cover everything Original Medicare covers, but you may need to use the plan's network, get a referral or get prior authorization, and out-of-pocket costs differ by plan.⁠²⁶

Private insurance: every Marketplace plan covers rehabilitative services as an essential health benefit, though the specific services covered vary with your state's requirements.⁠²⁷ Check the plan's visit limits and referral rules before you start.

RelatedPaying for physical therapy as an adult

What are the common myths about dizziness and vertigo?

• Myth: vertigo pills fix BPPV. No medicine cures BPPV, some can delay recovery, and the guideline advises against routinely using vestibular suppressants for it.⁠^2,14
• Myth: you need a brain scan to find the cause. For BPPV that meets the criteria, the guideline recommends against imaging; in Ménière's disease, scans are used to rule out other diseases.⁠^2,4
• Myth: rest and wait for the balance system to heal. For vestibular loss, the guideline's strong recommendation is to offer vestibular rehabilitation, from the acute stage on.⁠¹⁵
• Myth: normal scans mean it is all in your head. PPPD has positive diagnostic criteria and is a functional vestibular disorder, not a psychiatric one.⁠⁵
• Myth: every dizzy spell is a stroke. Stroke or TIA was found in 3.2% of people over 44 seen in the emergency department for dizziness, but sudden dizziness with any B.E. F.A.S.T. sign still means calling 911.⁠^7,11
• Myth: dizziness is just part of getting older. Balance problems do become more common with age, and BPPV can develop just from getting older, yet it is treatable, often in one session.⁠¹

How do you find a vestibular therapist near you?

Look for a physical therapist with training and experience in vestibular rehabilitation, experience treating neurological problems, or board certification as a neurologic clinical specialist. When you call, ask about the therapists' experience with inner-ear problems, and be ready to describe your symptoms in detail.⁠¹⁴

Can children have vertigo or vestibular disorders?

Children get vestibular problems too. In the 2016 National Health Interview Survey, 5.6% of US children aged 3 to 17 had dizziness or imbalance, and only about four in ten had been seen by a health professional for it.⁠²⁸

In one center's series of 1,037 children referred for balance problems, testing found an inner-ear impairment in 36.5%; when the tests were normal, the most common other causes were migraine and eye disorders.⁠²⁹ Rehabilitation for children is shaped by age and development, and very young children may not describe dizziness at all, only avoid activities or cry.⁠³⁰

The childhood condition with the confusing name has its own page: Benign paroxysmal vertigo of childhood. How children's brains use movement and body-position input is a sensory processing topic, not an inner-ear disease: Vestibular and proprioceptive processing.

Related guides on DrSensory

• Vestibular rehabilitation and balance retraining
• Falls and balance in older adults
• Staying independent at home
• Adult neurologic therapy
• Traumatic brain injury in adults
• Rehabilitation after a stroke
• Peripheral neuropathy
• Physical therapy for adults
• Start here for adults

Frequently Asked Questions

Sources

1. National Institute on Deafness and Other Communication Disorders. Balance Disorders. NIH Pub. No. 00-4374. Checked October 29, 2026.
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   “A balance disorder is a condition that makes you feel unsteady or dizzy”; “About 15 percent of American adults (33 million) had a balance or dizziness problem in 2008”; “Your risk of having balance problems increases as you get older”; balance relies on signals from “your eyes, ears, and the muscles and touch sensors in your legs”; BPPV is “A brief, intense episode of vertigo triggered by a specific change in the position of the head” and “can result from a head injury, or can develop just from getting older”; labyrinthitis is “An infection or inflammation of the inner ear” “often associated with an upper respiratory infection, such as the flu”; vestibular neuronitis is “An inflammation of the vestibular nerve that can be caused by a virus, and primarily causes vertigo”; perilymph fistula is “A leakage of inner ear fluid into the middle ear. It causes unsteadiness that usually increases with activity” and “can occur after a head injury, dramatic changes in air pressure (such as when scuba diving), physical exertion, ear surgery, or chronic ear infections”; mal de debarquement syndrome is “A feeling of continuously rocking, swaying, or bobbing, typically after an ocean cruise or other sea travel”; “Usually the symptoms go away within a few hours or days”; “If you have additional problems with motor control, such as weakness, slowness, tremor, or rigidity, you can lose your ability to recover properly from imbalance”; “An audiologist is a clinician who specializes in the function of the hearing and vestibular systems”; “There are more than a dozen different balance disorders”; “your primary doctor may suggest that you see an otolaryngologist and an audiologist”; tests include “a hearing examination, blood tests, a video nystagmogram”, posturography and “rotational chair testing”; “The first thing an otolaryngologist will do if you have a balance problem is determine if another health condition or a medication is to blame”; for BPPV an otolaryngologist or audiologist “might perform a series of simple movements, such as the Epley maneuver”; “In many cases, one session works; other people need the procedure several times”; “Talk to your doctor about whether it's safe to drive”; “avoid walking in the dark. Wear low-heeled shoes or walking shoes outdoors. If necessary, use a cane or walker and modify conditions at your home and workplace, such as adding handrails”; “Low blood pressure can lead to dizziness when you stand up too quickly”; “arthritis or eye muscle imbalance”. NIDCD dates the page March 6, 2018.
2. 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. doi:10.1177/0194599816689667 (PMID 28248609). Checked October 29, 2026.
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   The American Academy of Otolaryngology–Head and Neck Surgery Foundation guideline, for patients aged 18 and older, built on 2 guidelines, 20 systematic reviews and 27 randomized trials. Its purposes include “reducing the inappropriate use of vestibular suppressant medications, decreasing the inappropriate use of ancillary testing such as radiographic imaging, and increasing the use of appropriate therapeutic repositioning maneuvers”. Strong recommendations: diagnose posterior canal BPPV “when vertigo associated with torsional, upbeating nystagmus is provoked by the Dix-Hallpike maneuver” and “treat, or refer to a clinician who can treat, patients with posterior canal BPPV with a canalith repositioning procedure”; “a strong recommendation against postprocedural postural restrictions”. Recommendations: a “supine roll test” for lateral canal BPPV; “assess patients with BPPV for factors that modify management, including impaired mobility or balance, central nervous system disorders, a lack of home support, and/or increased risk for falling”; “reassess patients within 1 month”; against “radiographic imaging for a patient who meets diagnostic criteria for BPPV”, against “vestibular testing” in the same case, and against “routinely treating BPPV with vestibular suppressant medications such as antihistamines and/or benzodiazepines”. Options: “observation with follow-up as initial management” and “vestibular rehabilitation, either self-administered or with a clinician”.
3. Strupp M, Bisdorff A, Furman J, et al. Acute unilateral vestibulopathy/vestibular neuritis: diagnostic criteria. Journal of Vestibular Research. 2022;32(5):389–406. doi:10.3233/VES-220201 (PMID 35723133; PMC9661346). Checked October 29, 2026.
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   Consensus criteria of the Barany Society classification committee. “Acute or subacute onset of sustained spinning or non-spinning vertigo (i.e., an acute vestibular syndrome) of moderate to severe intensity with symptoms lasting for at least 24 hours”; “The leading symptom is an acute or rarely subacute onset of spinning or non-spinning vertigo with unsteadiness, nausea/vomiting and/or oscillopsia”; no “acute audiological symptoms such as hearing loss or tinnitus”; “the diagnosis of AUVP is based on the patient history, bedside examination, and, if necessary, laboratory evaluation”; labyrinthitis is “Associated with ear pain, reduced hearing and/or tinnitus”; “The course of the disease can be acute, subacute or slowly progressive”; “The static deficits diminish over weeks”; “If the peripheral vestibular deficit persists, the dynamic deficits do not recover completely”; “A treatment with anti-vertiginous drugs and/or steroids may reduce the intensity and duration of signs (e.g., nystagmus) and symptoms of AUVP”; among peripheral vestibular disorders in a cohort of more than 36,000 patients, “BPPV ranks first, Menière's disease second”.
4. National Institute on Deafness and Other Communication Disorders. Ménière’s Disease. Checked October 29, 2026.
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   “a disorder of the inner ear that causes severe dizziness (vertigo), ringing in the ears (tinnitus), hearing loss, and a feeling of fullness or congestion in the ear”; “usually affects only one ear”; “vertigo so extreme that they lose their balance and fall”, called “drop attacks”; “more likely to occur in adults between 40 and 60 years of age. Approximately 615,000 individuals in the United States have Ménière’s disease”; “most often diagnosed and treated by an otolaryngologist”; “Your doctor may suggest a hearing screening to identify any hearing loss”; “To rule out other diseases, magnetic resonance imaging (MRI) or computed tomography (CT) scans of the brain may be recommended”; “Two or more spontaneous episodes of vertigo lasting 20 minutes to 12 hours”; “There isn’t a cure yet”; options include “Limiting dietary salt”, medications that “relieve dizziness and shorten the attack”, “A doctor may recommend vestibular rehabilitation and/or physical therapy if you have chronic balance issues”, injections, and surgery “when all other treatments have failed to relieve dizziness”.
5. Staab JP, Eckhardt-Henn A, Horii A, et al. Diagnostic criteria for persistent postural-perceptual dizziness (PPPD): consensus document of the committee for the Classification of Vestibular Disorders of the Barany Society. Journal of Vestibular Research. 2017;27(4):191–208. doi:10.3233/VES-170622 (PMID 29036855). Checked October 29, 2026.
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   Expert consensus criteria drawn from 30 years of research. “PPPD manifests with one or more symptoms of dizziness, unsteadiness, or non-spinning vertigo that are present on most days for three months or more and are exacerbated by upright posture, active or passive movement, and exposure to moving or complex visual stimuli”; “PPPD may be precipitated by conditions that disrupt balance or cause vertigo, unsteadiness, or dizziness, including peripheral or central vestibular disorders, other medical illnesses, or psychological distress”; “PPPD is classified as a chronic functional vestibular disorder. It is not a structural or psychiatric condition”.
6. Popkirov S, Staab JP, Stone J. Persistent postural-perceptual dizziness (PPPD): a common, characteristic and treatable cause of chronic dizziness. Practical Neurology. 2018;18(1):5–13. doi:10.1136/practneurol-2017-001809 (PMID 29208729). A clinical review. Checked October 29, 2026.
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   “While diagnostic tests and conventional imaging usually remain negative, patients with PPPD present in a characteristic way that maps on to positive diagnostic criteria”; “Patients often develop secondary functional gait disorder, anxiety, avoidance behaviour and severe disability”; “Once recognised, PPPD can be managed with effective communication and tailored treatment strategies, including specialised physical therapy (vestibular rehabilitation), serotonergic medications and cognitive-behavioural therapy”.
7. Centers for Disease Control and Prevention. Signs and Symptoms of Stroke. Checked October 29, 2026.
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   “Sudden trouble walking, dizziness, loss of balance, or lack of coordination”; “Sudden trouble seeing”; “Sudden numbness or weakness in the face, arm, or leg, especially on one side of the body”; “Sudden confusion, trouble speaking, or difficulty understanding speech”; “Sudden severe headache with no known cause”; “Call 9-1-1 right away if you or someone else has any of these symptoms”. B.E. F.A.S.T.: Balance loss, “Ask the person if they are feeling off-balance or dizzy”; “Note the time when any symptoms first appear”; “Do not drive to the hospital or let someone else drive you. Call 9-1-1 for an ambulance so that medical personnel can begin life-saving treatment on the way to the emergency room”; “If your stroke symptoms go away after a few minutes, you may have had a transient ischemic attack (TIA)”, and “tell a health care team about the symptoms right away”.
8. American Stroke Association. Stroke Symptoms. B.E. Checked October 29, 2026.
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   F.A.S.T.: “Is there a sudden loss of balance or coordination? Is the person having trouble walking or experiencing dizziness?”; “Ask the person if they are experiencing blurred vision, double vision, or loss of sight in one or both eyes”; “Does one side of the face droop, or is it numb?”; “Is one arm weak or numb?”; “Is speech slurred or difficult to understand?”; “If you have any of these symptoms or see someone else having them, call 911 immediately!”.
9. National Institute on Deafness and Other Communication Disorders. Sudden Deafness. Checked October 29, 2026.
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   People with sudden hearing loss “may also notice one or more of these symptoms: a feeling of ear fullness, dizziness, and/or a ringing in their ears”; “you should consider sudden deafness symptoms a medical emergency and visit a doctor immediately”; “Treatment that is delayed for more than two to four weeks is less likely to reverse or reduce permanent hearing loss”.
10. Centers for Disease Control and Prevention. Symptoms of Mild TBI and Concussion. Checked October 29, 2026.
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    Physical symptoms include “Dizziness or balance problems”; “most people with a mild TBI or concussion feel better within a couple of weeks”. Danger signs in adults, for which others “should call 9-1-1 or take you to an emergency department right away”: “Have a headache that gets worse and does not go away”; “Experience weakness, numbness, decreased coordination, convulsions, or seizures”; “Vomit repeatedly”; “Have slurred speech or unusual behavior”; “Have one pupil (the black part in the middle of the eye) larger than the other”; “Cannot recognize people or places, get confused, restless, or agitated”; “Lose consciousness, look very drowsy or cannot be woken up”.
11. Kerber KA, Brown DL, Lisabeth LD, et al. Stroke among patients with dizziness, vertigo, and imbalance in the emergency department: a population-based study. Stroke. 2006;37(10):2484–2487. doi:10.1161/01.STR.0000240329.48263.0d (PMID 16946161). Checked October 29, 2026.
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    A population-based study of patients over 44 presenting to the emergency department with dizziness, vertigo or imbalance. “Stroke/TIA was diagnosed in 3.2% (53 of 1666) of all patients”; “Only 0.7% (9 of 1297) of those with isolated DS had a stroke/TIA”; “Patients with imbalance (dizziness as referent) were more likely to have stroke/TIA”; “Isolated dizziness, vertigo, or imbalance strongly predicts a noncerebrovascular cause. The symptom of imbalance is a predictor of stroke/TIA”.
12. Agrawal Y, Carey JP, Della Santina CC, et al. Disorders of balance and vestibular function in US adults: data from the National Health and Nutrition Examination Survey, 2001-2004. Archives of Internal Medicine. 2009;169(10):938–944. doi:10.1001/archinternmed.2009.66 (PMID 19468085). Checked October 29, 2026.
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    Cross-sectional national survey of 5,086 US adults aged 40 and older, vestibular function measured with the modified Romberg test. “35.4% of US adults aged 40 years and older (69 million Americans) had vestibular dysfunction”; odds “increased significantly with age” and “were 70.0% higher among people with diabetes mellitus”; “Participants with vestibular dysfunction who were clinically symptomatic (ie, reported dizziness) had a 12-fold increase in the odds of falling”.
13. von Brevern M, Radtke A, Lezius F, et al. Epidemiology of benign paroxysmal positional vertigo: a population based study. Journal of Neurology, Neurosurgery and Psychiatry. 2007;78(7):710–715. doi:10.1136/jnnp.2006.100420 (PMID 17135456). Checked October 29, 2026.
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    Cross-sectional, nationally representative survey of adults in Germany (4,869 screened, 1,003 neurotological interviews). “The lifetime prevalence of BPPV was 2.4%”; “The median duration of an episode was 2 weeks”; “In 86% of affected individuals, BPPV led to medical consultation, interruption of daily activities or sick leave. In total, only 8% of affected participants received effective treatment”.
14. American Physical Therapy Association. Physical Therapy Guide to Benign Paroxysmal Positional Vertigo (BPPV). Checked October 29, 2026.
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    ChoosePT, written by the Academy of Neurologic Physical Therapy. “the majority of people with BPPV can be treated with simple and specific maneuvers that involve moving the head and body”; the vertigo “is brief and intense and usually lasts for about 15 to 45 seconds”, set off by “Lying down. Turning over in bed. Bending over. Looking up”; “You also may feel light-headed, off-balance, or nauseous”; “Most often, the cause of BPPV is not known”; “Your physical therapist will perform tests to see whether vertigo and involuntary eye movement are present”; maneuvers “are designed to move the crystals from the semicircular canal back into the appropriate area in the inner ear (the utricle)”; “No medication has been found to cure BPPV. In some cases, medicine can actually delay recovery”; “Within three years of having a bout of BPPV, symptoms will return for about 50% of people”; “If BPPV results from head trauma, it is more likely to recur”; “you will be able to recognize the symptoms and keep yourself safe until you can get help”; look for “A physical therapist with specialized training and experience in vestibular rehabilitation”, one “experienced in treating people with neurological problems” or “a board-certified neurological clinical specialist”; “ask about the physical therapists' experience in helping people with inner ear problems”.
15. Hall CD, Herdman SJ, Whitney SL, et al. Vestibular rehabilitation for peripheral vestibular hypofunction: an updated clinical practice guideline from the Academy of Neurologic Physical Therapy of the American Physical Therapy Association. Journal of Neurologic Physical Therapy. 2022;46(2):118–177. doi:10.1097/NPT.0000000000000382 (PMID 34864777; PMC8920012). A guideline built on a systematic review of 67 articles published 2015 to June 2020. Checked October 29, 2026.
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    “Clinicians should offer vestibular physical therapy to individuals with acute or subacute unilateral vestibular hypofunction” (strong); “Gaze stabilization exercises (GSEs) were developed based on the concepts of VOR adaptation and substitution”; “Based on strong evidence, clinicians should offer vestibular rehabilitation to adults with unilateral and bilateral vestibular hypofunction”, in acute, subacute and chronic stages; “clinicians should not include voluntary saccadic or smooth-pursuit eye movements in isolation (ie, without head movement) to promote gaze stability”; “clinicians should offer supervised vestibular rehabilitation” (benefits: “Improved outcome with a supervised rehabilitation program. Improved adherence”); on moderate to weak evidence, gaze stabilization “3 times per day for a total of at least 12 minutes daily” in acute or subacute unilateral loss, “3 to 5 times per day for a total of at least 20 minutes daily for 4 to 6 weeks” in chronic unilateral loss, and “approximately 5 to 7 weeks” in bilateral loss; balance exercises “for a minimum of 20 minutes daily for at least 4 to 6 weeks”; stopping on “achievement of primary goals, resolution of symptoms, normalized balance and vestibular function, or plateau in progress”. The four exercise parts: “gaze stabilization exercises”, “habituation exercises”, “balance and gait training” and “walking for endurance”; gaze exercises “involve head movement while maintaining focus on a target, which may be stationary or moving”; in habituation “the individual performs several repetitions of body or visual motions that cause mild to moderate symptoms”; “worsening symptoms during the first several weeks of the VPT program do not necessarily mean VPT should be discontinued, as most individuals progress to symptom improvement”; therapy “should be offered to individuals, especially those older than 50 years” with “unsteadiness, near-falls, or falls”, and results in “reduced fall risk”; uncompensated hypofunction “may negatively impact an individual's quality of life, ability to perform activities of daily living, drive, and work”; the guideline “may not apply to individuals with central vestibular disorders”; quality of life in bilateral loss “does not improve to the same extent”; “there is no consensus as to a core set of outcome measures”; measures used include the Dizziness Handicap Inventory (“Perceived handicap as a result of dizziness”) and the Activities-specific Balance Confidence Scale.
16. Lempert T, Olesen J, Furman J, et al. Vestibular migraine: diagnostic criteria (update). Journal of Vestibular Research. 2022;32(1):1–6. doi:10.3233/VES-201644 (PMID 34719447). Checked October 29, 2026.
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    Joint criteria of the Barany Society and the International Headache Society. “The diagnosis of vestibular migraine is based on recurrent vestibular symptoms, a history of migraine, a temporal association between vestibular symptoms and migraine symptoms and exclusion of other causes of vestibular symptoms”; “Symptoms that qualify for a diagnosis of vestibular migraine include various types of vertigo as well as head motion-induced dizziness with nausea”; “Symptoms must be of moderate or severe intensity. Duration of acute episodes is limited to a window of between 5 minutes and 72 hours”.
17. McDonnell MN, Hillier SL. Vestibular rehabilitation for unilateral peripheral vestibular dysfunction. Cochrane Database of Systematic Reviews. 2015;1:CD005397. doi:10.1002/14651858.CD005397.pub4 (PMID 25581507). Checked October 29, 2026.
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    Systematic review of “39 studies involving 2441 participants”, adults living in the community. Frequency of dizziness favored vestibular rehabilitation “(odds ratio (OR) 2.67, 95% confidence interval (CI) 1.85 to 3.86; four studies, 565 participants)”; “There is moderate to strong evidence that vestibular rehabilitation is a safe, effective management for unilateral peripheral vestibular dysfunction”; “for the specific diagnostic group of BPPV, physical (repositioning) manoeuvres are more effective in the short term than exercise-based vestibular rehabilitation; although a combination of the two is effective for longer-term functional recovery”.
18. Basura GJ, Adams ME, Monfared A, et al. Clinical practice guideline: Ménière’s disease. Otolaryngology–Head and Neck Surgery. 2020;162(2 Suppl):S1–S55. doi:10.1177/0194599820909438 (PMID 32267799). Checked October 29, 2026.
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    The American Academy of Otolaryngology–Head and Neck Surgery Foundation guideline. Ménière’s disease is “defined by spontaneous vertigo attacks (each lasting 20 minutes to 12 hours) with documented low- to midfrequency sensorineural hearing loss in the affected ear” and “fluctuating aural symptoms (hearing loss, tinnitus, or ear fullness)”; “Conventional imaging, if performed, is also typically normal”.
19. Centers for Disease Control and Prevention. Facts About Older Adult Falls. Checked October 29, 2026.
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    “more than one out of four older people falls each year, but less than half tell their doctor. Falling once doubles your chances of falling again”; risk factors include “Lower body weakness”, “Difficulties with walking and balance”, “Use of medicines, such as tranquilizers, sedatives, or antidepressants. Even some over-the-counter medicines can affect balance and how steady you are on your feet”, “Vision problems”, “Foot pain or poor footwear”; “An older person who falls and hits their head should see their doctor right away”.
20. American Physical Therapy Association. Preparing for your visit. ChoosePT. Checked October 29, 2026.
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    The physical therapist asks “specific questions about your condition and any symptoms that led you to see them” and “about your home or work setting, your health habits and activity level”; the exam may include “Strength. Flexibility. Balance. Coordination” and “How you walk (your gait)”; “Your physical therapist will work with you to determine your goals for physical therapy”; “In many cases, the physical therapist will diagnose your condition and begin treatment right away”.
21. Hilton MP, Pinder DK. The Epley (canalith repositioning) manoeuvre for benign paroxysmal positional vertigo. Cochrane Database of Systematic Reviews. 2014;(12):CD003162. doi:10.1002/14651858.CD003162.pub3 (PMID 25485940). Checked October 29, 2026.
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    Systematic review of 11 randomized trials, 745 patients, “All patients were adults aged 18 to 90 years old”. “the proportion of patients resolving increased from 21% to 56%” (Epley against sham or control, five studies, 273 participants); “Rates of nausea during the repositioning manoeuvre varied from 16.7% to 32%. Some patients were unable to tolerate the manoeuvres because of cervical spine problems”; “There were no serious adverse effects of treatment”; “based on the results of 11, mostly small, randomised controlled trials with relatively short follow-up”; “There is a high recurrence rate of BPPV after treatment (36%)”; “Outcomes for Epley manoeuvre treatment are comparable to treatment with Semont and Gans manoeuvres, but superior to Brandt-Daroff exercises”.
22. Schneider KJ, Meeuwisse WH, Nettel-Aguirre A, et al. Cervicovestibular rehabilitation in sport-related concussion: a randomised controlled trial. British Journal of Sports Medicine. 2014;48(17):1294–1298. doi:10.1136/bjsports-2013-093267 (PMID 24855132). Checked October 29, 2026.
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    Randomized trial of 31 people aged 12 to 30 with “persistent symptoms of dizziness, neck pain and/or headaches following a sport-related concussion”. “In the treatment group, 73% (11/15) of the participants were medically cleared within 8 weeks of initiation of treatment, compared with 7% (1/14) in the control group”.
23. Centers for Medicare & Medicaid Services. Physical therapy services. Medicare.gov. Checked October 29, 2026.
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    “Medicare Part B (Medical Insurance) helps pay for medically necessary outpatient physical therapy”; “You can also get this therapy to help improve or maintain your current function, or slow your rate of decline”; “Your doctor or other health care provider (including a nurse practitioner, clinical nurse specialist, or physician assistant) must certify that you need it”; “After the Part B deductible, you pay 20% of the Medicare-approved amount”; “There’s no limit on how much Medicare pays for your medically necessary outpatient therapy services in one calendar year”.
24. Centers for Medicare & Medicaid Services. Medicare costs. Medicare.gov. Part B deductible in 2026: “$283 before Original Medicare starts to pay. You pay this deductible once each year”. Checked October 29, 2026.
25. Centers for Medicare & Medicaid Services. Therapy services. CMS.gov. Checked October 29, 2026.
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    The Bipartisan Budget Act of 2018 “repeals application of the Medicare outpatient therapy caps” and keeps the former amounts “as thresholds above which claims must include the KX modifier as a confirmation that services are medically necessary as justified by appropriate documentation in the medical record”; “Claims for services over the KX modifier threshold amounts without the KX modifier are denied. For CY 2026 this KX modifier threshold amount is: $2,480 for PT and SLP services combined, and $2,480 for OT services”; “the MR threshold is $3,000 for PT and SLP services and $3,000 for OT services”; “not all claims exceeding the MR threshold amount are subject to review”.
26. Centers for Medicare & Medicaid Services. Compare Original Medicare and Medicare Advantage. Medicare.gov. Checked October 29, 2026.
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    Medicare Advantage: “Plans must cover all medically necessary services that Original Medicare covers”; “You may need to use doctors and other providers who are in the plan’s network”; “You may need to get a referral to see a specialist”; “Plans may have different out-of-pocket costs for certain services”; “You may need to get approval (prior authorization) from your plan before it covers certain services or supplies”.
27. HealthCare.gov. What Marketplace health insurance plans cover. Checked October 29, 2026.
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    “All plans offered in the Marketplace cover these 10 essential health benefits”, including “Rehabilitative and habilitative services and devices (services and devices to help people with injuries, disabilities, or chronic conditions gain or recover mental and physical skills)”; “Specific services covered in each broad benefit category can vary based on your state’s requirements”.
28. Brodsky JR, Lipson S, Bhattacharyya N. Prevalence of pediatric dizziness and imbalance in the United States. Otolaryngology–Head and Neck Surgery. 2020;162(2):241–247. doi:10.1177/0194599819887375 (PMID 31689154). Cross-sectional analysis of the 2016 National Health Interview Survey, children aged 3 to 17. Checked October 29, 2026.
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    “Dizziness or imbalance was reported in 3.5 (95% confidence interval, 3.1-3.9) million patients (5.6%)”; “Evaluation by a health professional was reported for 42% of patients with dizziness and 43% of patients with imbalance”.
29. Wiener-Vacher SR, Quarez J, Priol AL. Epidemiology of vestibular impairments in a pediatric population. Seminars in Hearing. 2018;39(3):229–242. doi:10.1055/s-0038-1666815 (PMID 30038452). Checked October 29, 2026.
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    A single center’s series of 2,528 children referred for vestibular testing. “For BD (e.g., vertigo, dizziness, instability, delay in posturomotor development), VI was found in 36.5% (n = 379/1,037)”; normal results “excluded a vestibular origin to BD, leading to other diagnoses: principally migraine (15.6%), ophthalmological disorders (15.1%)”.
30. Rine RM. Vestibular rehabilitation for children. Seminars in Hearing. 2018;39(3):334–344. doi:10.1055/s-0038-1666822 (PMID 30038459). A narrative review. Checked October 29, 2026.
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    “the selection and provision of exercises to be included in the VR protocol for children vary, depending on the nature of the lesion, impairments identified, age at the time of lesion, and developmental factors”; “Very young children may not be able to describe symptoms but rather only avoid activities or cry”.

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