Dizziness and Vertigo: Finding the Neurological Cause
Not all dizziness is the same, and not all of it comes from the ear. The difference between a benign positional problem and a stroke in the making is a neurological examination that most dizzy patients never receive. We start there.
Available at our St. Marys, Georgia clinic.
The Question That Changes Everything: Peripheral or Central?
The single most important question in any vertigo evaluation is whether the problem originates in the inner ear or in the brain. Peripheral vertigo—caused by conditions such as benign paroxysmal positional vertigo (BPPV), vestibular neuritis, or Ménière’s disease—is far more common and almost always treatable. Central vertigo, arising from the brainstem or cerebellum, is less common but carries serious diagnostic implications including stroke, multiple sclerosis, and cerebellar degeneration.
The problem is that this distinction requires a neurological examination. Most dizzy patients are seen in urgent care or by their primary care physician, given meclizine, and told to follow up if it doesn’t resolve. A 2009 study by Newman-Toker and colleagues published in Academic Emergency Medicine found that stroke was missed in approximately 35% of patients presenting with dizziness to the emergency department when the chief complaint was isolated vertigo without obvious focal deficits. The standard triage approach treats dizziness as a symptom to suppress rather than a sign to decode.
Peripheral vertigo tends to produce intense spinning triggered by head position, with a clear onset and offset. The nystagmus is unidirectional, follows predictable patterns, and fatigues with repeated testing. Central vertigo, by contrast, often presents with less dramatic spinning but more severe imbalance, direction-changing nystagmus, and subtle neurological signs that a non-specialist may not detect. A patient who cannot walk a straight line but whose room isn’t spinning may have a more dangerous problem than the patient who grips the exam table during a Dix-Hallpike maneuver.
Our evaluation begins with the examination itself. Before any imaging is ordered, a careful bedside assessment of eye movements, positional triggers, gait stability, and coordination can distinguish peripheral from central causes with a sensitivity that rivals or exceeds imaging in the acute setting. The HINTS exam (Head Impulse, Nystagmus, Test of Skew), when performed by a neurologist, has been shown to outperform early MRI in identifying posterior circulation stroke presenting as vertigo (Kattah et al., 2009, Stroke).
Common Causes We Evaluate and Treat
Benign Paroxysmal Positional Vertigo (BPPV) is the most common cause of vertigo, produced by displaced calcium carbonate crystals in the semicircular canals. Episodes are brief—typically lasting under a minute—and triggered by specific head movements such as rolling over in bed, looking up, or bending forward. BPPV is diagnosed at the bedside with the Dix-Hallpike maneuver and treated immediately with canalith repositioning (the Epley maneuver), which resolves symptoms in a single visit for most patients.
Vestibular neuritis presents as sudden, sustained vertigo lasting days, caused by inflammation of the vestibular nerve, typically after a viral illness. Patients experience severe spinning, nausea, and imbalance but preserve their hearing. The neurological exam shows a unidirectional nystagmus with a positive head impulse test on the affected side. Recovery involves vestibular rehabilitation and, in some cases, a short course of corticosteroids. We evaluate these patients to confirm the peripheral pattern and rule out a cerebellar stroke, which can mimic neuritis closely.
Vestibular migraine is one of the most frequently missed diagnoses in vertigo medicine. Neuhauser et al. (2006, published in Neurology) reported a lifetime prevalence of approximately 1% in the general population, making it the second most common cause of recurrent vertigo after BPPV. Many patients have no headache during their vestibular episodes, which leads clinicians to overlook migraine entirely. The vertigo can last minutes to days, is often accompanied by motion sensitivity, photophobia, or phonophobia, and responds to migraine-specific preventive therapy rather than vestibular suppressants. We have extensive experience identifying vestibular migraine and distinguishing it from Ménière’s disease, which shares several features but requires a different management approach.
Ménière’s disease produces episodes of vertigo lasting 20 minutes to several hours, accompanied by fluctuating hearing loss, tinnitus, and aural fullness in the affected ear. The condition is caused by endolymphatic hydrops—excessive fluid pressure in the inner ear. Diagnosis rests on the clinical pattern and audiometric findings. The Neurogenesis Project evaluates Ménière’s patients neurologically to exclude central mimics and to coordinate with otology colleagues when interventional management is needed.
Central vertigo arises from pathology in the brainstem or cerebellum. Causes include posterior circulation stroke, multiple sclerosis plaques affecting vestibular pathways, cerebellar degeneration, and vertebrobasilar insufficiency. Central vertigo demands urgent neuroimaging and, in many cases, immediate intervention. Our clinic identifies central patterns at the bedside and orders MRI and vascular imaging the same day when the examination warrants it.
Our Diagnostic Approach
A systematic neurological evaluation that separates dangerous causes from benign ones before any imaging is ordered.
Bedside Neurological Examination
A comprehensive assessment of eye movements, nystagmus patterns, the HINTS battery, positional maneuvers including Dix-Hallpike and supine roll testing, gait evaluation, and cerebellar coordination tests. This examination alone identifies the cause in the majority of vertigo patients and determines whether imaging is needed.
Advanced Neuroimaging
When the clinical examination suggests a central cause, we order MRI with dedicated posterior fossa sequences to evaluate the brainstem, cerebellum, and cerebrovascular anatomy. MR angiography assesses the vertebrobasilar circulation for stenosis or dissection. PET scanning may be added when cerebellar hypometabolism or neurodegeneration is suspected.
Metabolic & Inflammatory Labs
Dizziness can be driven or worsened by metabolic dysfunction. We evaluate thyroid function, autoimmune markers relevant to inner ear disease, inflammatory cytokines, vitamin deficiencies (B12, D, magnesium), and vascular risk factors. These labs frequently identify treatable contributors that other workups miss.
Migraine Pattern Assessment
For patients whose episodes are recurrent and do not fit a positional or structural pattern, we conduct a detailed migraine history including triggers, aura features, motion sensitivity, and family history. Vestibular migraine is diagnosed clinically, and recognizing it redirects treatment from vestibular suppressants to migraine-specific preventive strategies that actually work.
Treatment Matched to the Cause
The reason so many dizzy patients cycle through specialists without improvement is that treatment was started before a diagnosis was made. Meclizine suppresses vestibular input indiscriminately. It may reduce nausea for a few hours, but it does nothing to address the underlying mechanism and can actually delay compensation in vestibular neuritis.
At The Neurogenesis Project, treatment follows diagnosis. BPPV patients receive canalith repositioning in the office, which resolves their vertigo in a single session in the majority of cases. Vestibular neuritis patients receive a recovery plan built around vestibular rehabilitation and, where metabolic factors are contributing, targeted IV nutrient support to optimize nerve recovery.
Vestibular migraine patients benefit from the same migraine-specific treatment approach we use for headache patients: trigger identification, preventive pharmacotherapy, and metabolic optimization. For patients with significant migraine burden, our Chemodenervation and occipital nerve block protocols reduce both headache frequency and vestibular episodes.
Central vertigo patients require a different trajectory entirely. When imaging reveals a structural lesion, vascular event, or demyelinating disease, we coordinate with neurosurgery, vascular neurology, or neuroimmunology colleagues as indicated. Our clinic serves as the diagnostic entry point: we identify the cause, initiate workup, and ensure the patient reaches the right subspecialty team without delay.
Related Treatments
Headache & Migraine Treatment
Vestibular migraine shares a common mechanism with other migraine subtypes. Our migraine management protocols address both the headache and the vestibular components through preventive therapy and metabolic optimization.
Imbalance & Gait Disorders
Chronic dizziness and vestibular dysfunction frequently produce gait instability and fall risk. Our gait evaluation identifies the neurological contributors to imbalance and builds a targeted recovery plan.
Brain Health Lab Panels
Metabolic, inflammatory, and nutritional testing that identifies treatable contributors to vestibular dysfunction, including autoimmune markers, vitamin deficiencies, and vascular risk factors.
What to Expect
Dizziness history and characterization
Estimated time: 20 minutes
Dr. Orr takes a detailed history to characterize your dizziness as true vertigo (room spinning), lightheadedness, imbalance, or presyncope, because each type points to different causes. He reviews onset, triggers, duration of episodes, associated symptoms, and medication history.
Neurological and vestibular examination
Estimated time: 30 minutes
Dr. Orr performs a focused exam including oculomotor testing, Dix-Hallpike maneuver for benign positional vertigo, head impulse test, gait assessment, coordination testing, and evaluation for central versus peripheral causes of vertigo.
Diagnostic testing
Estimated time: 30 minutes
Depending on the clinical picture, Dr. Orr may order brain MRI to rule out central causes, vestibular function testing, audiometry, carotid Doppler, or blood work. The specific workup is guided by whether the exam suggests a peripheral vestibular, central neurological, or cardiovascular origin.
Diagnosis and treatment
Estimated time: 20 minutes
Dr. Orr explains the diagnosis and initiates treatment, which may include canalith repositioning maneuvers for BPPV, vestibular rehabilitation referral, medication management, or further workup for central causes. Treatment depends entirely on the underlying diagnosis.
Frequently Asked Questions
How do you determine whether dizziness is coming from the brain or the ear?+
We use specific physical exam maneuvers and eye movement tests. Inner ear problems produce predictable patterns. Brain-related dizziness produces irregular patterns and may come with other neurological symptoms. If the exam points to the brain, we order imaging.
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We perform a detailed neurological examination that includes specific positional maneuvers, eye movement analysis, gait testing, and coordination assessment. Peripheral causes like BPPV produce predictable nystagmus patterns and respond to repositioning maneuvers. Central causes produce irregular nystagmus, direction-changing patterns, or accompanying neurological signs such as limb weakness, speech changes, or sensory loss. When clinical findings point toward a central origin, we order neuroimaging to evaluate the brainstem, cerebellum, and cerebrovascular system directly.
What is vestibular migraine, and how is it different from regular migraine?+
Vestibular migraine causes episodes of dizziness or vertigo instead of (or along with) headache. Many patients have little or no head pain. It is triggered by the same things as regular migraines and is one of the most commonly missed causes of recurring vertigo.
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Vestibular migraine is a condition in which the migraine mechanism produces episodic vertigo, dizziness, or imbalance rather than, or in addition to, headache. Many patients with vestibular migraine have minimal or no head pain during their episodes. The vertigo can last minutes to days and is often triggered by the same factors that provoke conventional migraines: stress, sleep disruption, hormonal changes, and dietary triggers. Diagnosis is clinical, based on the pattern and duration of episodes combined with a personal or family history of migraine. It is one of the most underdiagnosed causes of recurrent vertigo.
When should I be concerned that dizziness is something serious?+
Go to the ER immediately if dizziness comes with double vision, slurred speech, facial drooping, or weakness on one side — these can signal a stroke. Outside emergencies, dizziness lasting weeks without a diagnosis warrants a neurologist visit.
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Sudden-onset vertigo accompanied by double vision, slurred speech, difficulty swallowing, facial drooping, limb weakness, or severe imbalance requires emergency evaluation, as these signs suggest a stroke or other central nervous system event. Outside of emergencies, dizziness that is progressive, that occurs with hearing loss on one side, that does not fit a recognizable peripheral pattern, or that is accompanied by new headaches or cognitive changes warrants a thorough neurological workup. Any dizziness lasting weeks without a clear diagnosis should be evaluated by a neurologist.
What diagnostic tools do you use for vertigo evaluation?+
We start with a hands-on neurological exam using specific vertigo-provoking tests. If the exam suggests a brain-related cause, we add MRI imaging of the brainstem and cerebellum, plus blood tests to check for inflammation and vascular risk factors.
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Our evaluation begins with a comprehensive neurological examination, including Dix-Hallpike and supine roll testing for positional vertigo, head impulse testing for vestibular nerve function, and detailed oculomotor assessment. When clinical findings suggest a central cause, we use advanced MRI sequences to evaluate the brainstem, cerebellum, and cerebrovascular anatomy. PET scanning may be added when we need to assess metabolic function in cerebellar and vestibular processing regions. We also run metabolic and inflammatory lab panels to identify contributing factors like autoimmune inner ear disease or vascular risk.
Can vertigo be caused by problems in the brain rather than the ear?+
Yes. Strokes, MS, tumors, and blood flow problems in the brainstem or cerebellum can all cause vertigo. Brain-related vertigo tends to cause more trouble with balance and walking, and it requires a different treatment approach than ear-related vertigo.
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Yes. Central vertigo arises from dysfunction in the brainstem or cerebellum, which are the brain structures responsible for processing vestibular input. Causes include stroke, multiple sclerosis plaques, cerebellar degeneration, tumors such as vestibular schwannoma, and vertebrobasilar insufficiency. Central vertigo tends to produce less intense spinning but more severe imbalance, and it often comes with other neurological symptoms. It requires a fundamentally different diagnostic approach and treatment strategy than peripheral vertigo, which is why the distinction matters so much clinically.
Does insurance cover vertigo evaluation at your clinic?+
No. We operate outside insurance networks. We provide documentation for out-of-network reimbursement, and our patient coordinator can discuss costs before you schedule.
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The Neurogenesis Project operates outside of insurance networks. Our diagnostic workups use advanced imaging and metabolic testing that are not typically covered by standard plans. We provide detailed superbills and medical documentation that patients can submit for potential out-of-network reimbursement. Our patient coordinator can discuss costs and payment options before you schedule. Many patients come to us after standard vestibular testing has failed to produce a diagnosis, making the investment in a comprehensive neurological evaluation worthwhile.
Should I see a neurologist or an ENT for vertigo?+
Start with a neurologist if the cause is unclear. ENTs handle ear-related vertigo, but a neurologist can evaluate both ear and brain causes — and the most dangerous causes of vertigo are neurological.
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A neurologist is the right starting point when the cause is uncertain. ENT physicians specialize in peripheral vestibular disorders like BPPV and Meniere's disease. A neurologist evaluates both peripheral and central causes, which include vestibular migraine, brainstem lesions, cerebellar dysfunction, and vascular insufficiency. Since the most dangerous causes of vertigo are neurological, starting with a neurologist ensures nothing central is missed.
Can dizziness be a sign of stroke?+
Yes. A stroke in the back of the brain can present as sudden vertigo with no other obvious symptoms. If dizziness comes on suddenly with trouble walking, double vision, or slurred speech, go to the ER.
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Yes. A posterior circulation stroke affecting the cerebellum or brainstem can present as isolated vertigo with no other obvious stroke symptoms. The HINTS exam is more sensitive than CT for detecting posterior fossa strokes in the first 24 to 48 hours. If you experience sudden, severe vertigo with new difficulty walking, double vision, slurred speech, or asymmetric weakness, go to the emergency department immediately. Our clinic evaluates patients with persistent or recurrent dizziness where the acute emergency has been ruled out.
Do you perform the Epley maneuver or vestibular rehabilitation?+
Yes, we perform the Epley and other repositioning maneuvers in our office for BPPV. For ongoing vestibular rehabilitation exercises, we refer to physical therapists who specialize in balance and vestibular therapy.
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We perform canalith repositioning maneuvers including the Epley and Semont maneuvers in our office for patients diagnosed with BPPV. For ongoing vestibular rehabilitation, we refer to physical therapists who specialize in vestibular therapy. Vestibular rehabilitation involves gaze stabilization exercises, habituation exercises, and balance retraining. It is the primary treatment for chronic vestibular hypofunction and an important adjunct for vestibular migraine.
Dizziness Deserves a Diagnosis, Not Just a Prescription
If you’ve been given meclizine and told to wait it out, or if your vertigo has been worked up without a clear answer, a neurological evaluation may find what other approaches have missed. Dr. Orr and the team at The Neurogenesis Project are accepting new patients in St. Marys, Georgia.