Definition and epidemiology
Vertigo is a specific type of dizziness defined as a false sensation of rotational or linear motion, distinct from presyncope (lightheadedness), disequilibrium (imbalance without spinning), or nonspecific dizziness. Precise classification by history is the first and most important diagnostic step.
Vertigo is extremely common, accounting for a large share of primary care and emergency department visits for "dizziness." Lifetime prevalence estimates for vertigo in the general population are roughly 20-30%, increasing with age. BPPV alone affects an estimated 2-3% of the population at some point in life and is more common in women and in adults over 50-60 years old.
Causes are broadly divided into:
- Peripheral vertigo (inner ear/vestibular nerve): accounts for the large majority of cases, usually less severe systemic symptoms but often more intense spinning
- Central vertigo (brainstem/cerebellum): less common but higher stakes, since it can indicate stroke or other serious CNS pathology
- BPPV is the most common cause of vertigo overall and is diagnosed with the Dix-Hallpike maneuver
- Epley maneuver is first-line treatment for BPPV, not medication
- HINTS exam helps distinguish peripheral from central vertigo in acute vestibular syndrome
- A normal head impulse test in a patient with acute continuous vertigo suggests a central cause, not peripheral
- Meniere disease presents with the triad of episodic vertigo, tinnitus, and fluctuating sensorineural hearing loss
- Vestibular neuritis causes continuous vertigo for days without hearing loss, unlike labyrinthitis
- MRI with diffusion-weighted imaging is more sensitive than CT for early posterior circulation stroke
- Vestibular suppressants should be used short-term only, since they delay central vestibular compensation
Etiology and risk factors
Peripheral causes
- Benign paroxysmal positional vertigo (BPPV): dislodged otoconia (calcium carbonate crystals) in the semicircular canals, most often posterior canal
- Vestibular neuritis: presumed viral or post-viral inflammation of the vestibular nerve
- Labyrinthitis: vestibular neuritis plus hearing loss (cochlear involvement)
- Meniere disease: endolymphatic hydrops causing episodic vertigo, tinnitus, and sensorineural hearing loss
- Vestibular migraine: recurrent vertigo associated with migraine features
- Ototoxic drugs: aminoglycosides, loop diuretics, high-dose salicylates
- Perilymphatic fistula, cholesteatoma, acoustic neuroma (vestibular schwannoma)
Central causes
- Posterior circulation (vertebrobasilar) stroke or TIA
- Cerebellar hemorrhage or infarct
- Multiple sclerosis
- Vestibular migraine (can overlap with peripheral presentation)
- Brainstem tumors
Risk factors
- Advancing age
- Prior head trauma
- Vascular risk factors (hypertension, diabetes, smoking, atrial fibrillation) for central causes
- Family or personal history of migraine
- Recent upper respiratory infection (vestibular neuritis)
Pathophysiology
The vestibular system (semicircular canals, utricle, saccule) senses head position and movement and sends signals via the vestibular nerve (CN VIII) to the brainstem vestibular nuclei, which integrate input with visual and proprioceptive signals to maintain balance and gaze stability (vestibulo-ocular reflex).
In BPPV, free-floating otoconia debris in a semicircular canal (most commonly posterior canal) moves abnormally with head position changes, creating a false signal of rotation that triggers brief, intense vertigo and nystagmus.
In vestibular neuritis, inflammation of the vestibular nerve causes an asymmetric tonic signal between the two labyrinths, producing a persistent sense of rotation and a unidirectional nystagmus that the brain gradually compensates for over days to weeks.
In Meniere disease, excess endolymph fluid (hydrops) distends the membranous labyrinth, intermittently disrupting both vestibular and cochlear function, explaining the combination of vertigo, tinnitus, and hearing loss.
In central vertigo, ischemia or structural lesions disrupt brainstem/cerebellar vestibular pathways directly, often without the compensatory nystagmus patterns seen in peripheral disease, and frequently coexist with other brainstem signs.
Clinical features
Key history elements: onset, duration, triggers, and associated symptoms.
| Feature | Peripheral vertigo | Central vertigo |
|---|---|---|
| Onset | Sudden | Sudden or gradual |
| Duration | Seconds (BPPV) to days (neuritis) | Variable, often continuous |
| Severity | Often intense | May be milder |
| Nystagmus | Horizontal/rotatory, unidirectional, suppressed by fixation | Vertical, direction-changing, not suppressed by fixation |
| Hearing loss/tinnitus | May be present (Meniere, labyrinthitis) | Usually absent |
| Neurologic signs | Absent | Often present (dysarthria, diplopia, ataxia, weakness) |
| Gait | Preserved or mildly unsteady | Severely ataxic, cannot walk unassisted |
By condition
- BPPV: brief (<1 minute) episodes triggered by rolling over in bed, looking up, or bending forward
- Vestibular neuritis: continuous vertigo for days, worsened by head movement, with nausea/vomiting, no hearing loss
- Meniere disease: episodes lasting 20 minutes to hours, with fluctuating hearing loss, tinnitus, and aural fullness
- Vestibular migraine: episodes lasting minutes to days, often with headache, photophobia, phonophobia
- Central vertigo (e.g., stroke): sudden vertigo with additional "HINTS"-positive findings or focal neurologic deficits (diplopia, dysarthria, limb weakness, severe truncal ataxia)
Diagnosis
Diagnosis relies heavily on history and bedside examination; imaging is reserved for atypical or concerning presentations.
Bedside tests
- Dix-Hallpike maneuver: diagnostic for BPPV; positive test reproduces vertigo with transient rotatory nystagmus (latency, <1 minute duration, fatigability)
- HINTS exam (Head Impulse, Nystagmus, Test of Skew) for acute vestibular syndrome: used to differentiate peripheral from central causes in patients with continuous vertigo
- Peripheral pattern: abnormal (positive) head impulse test, unidirectional horizontal nystagmus, no skew deviation
- Central pattern ("INFARCT"): normal head impulse, direction-changing or vertical nystagmus, or presence of skew deviation — any one of these should prompt urgent neuroimaging
- Romberg test, gait assessment, and full cranial nerve exam
Laboratory and imaging
- Routine labs rarely needed unless systemic cause suspected
- MRI brain with diffusion-weighted imaging is the imaging of choice when central cause is suspected (more sensitive than CT for posterior circulation stroke, especially early)
- CT head is less sensitive for early ischemic stroke but can rule out hemorrhage
- Audiometry for suspected Meniere disease or other cochleovestibular pathology
- Referral to ENT/neurotology or neurology for atypical, recurrent, or diagnostically unclear cases
Differential diagnosis
- Presyncope/orthostatic hypotension: lightheadedness, not true spinning, worsens on standing
- Cardiac arrhythmia: episodic dizziness, palpitations, possible syncope
- Posterior circulation stroke/TIA: central vertigo with focal neurologic signs
- Multiple sclerosis: vertigo with other demyelinating symptoms, younger patients
- Vestibular migraine: recurrent vertigo with migrainous features, often family history
- Panic disorder/anxiety: dizziness with hyperventilation, no true vertigo or nystagmus
- Medication side effects/polypharmacy: common in elderly, especially antihypertensives and sedatives
- Acoustic neuroma: gradual unilateral hearing loss and imbalance rather than episodic vertigo
Management
Management is guided by the underlying cause; symptomatic therapy is adjunctive, not curative.
BPPV
- Canalith repositioning maneuvers (Epley maneuver for posterior canal BPPV) are first-line and highly effective, often resolving symptoms in one to a few sessions
- Vestibular suppressants are not recommended as primary therapy and may delay central compensation
Vestibular neuritis/labyrinthitis
- Short course of vestibular suppressants (antihistamines like meclizine, or benzodiazepines) for severe acute symptoms, limited to the first few days
- Antiemetics for nausea/vomiting
- Corticosteroids may be considered early in some guidelines, though evidence for long-term benefit is mixed
- Vestibular rehabilitation therapy is key for recovery and promotes central compensation
- Antivirals are not routinely recommended
Meniere disease
- Low-sodium diet and diuretics (e.g., hydrochlorothiazide) as first-line prophylaxis in many guidelines
- Betahistine is widely used in Europe/international practice (not FDA-approved in the US)
- Intratympanic corticosteroids or, for refractory cases, intratympanic gentamicin or surgical options (endolymphatic sac decompression, labyrinthectomy)
Vestibular migraine
- Migraine prophylactic agents (e.g., beta-blockers, tricyclic antidepressants, topiramate) and lifestyle/trigger management
Central vertigo
- Treat underlying cause (e.g., acute stroke protocols, disease-modifying therapy for MS)
- Urgent neurology involvement
General
- Fall-risk precautions in elderly patients
- Review and adjust contributing medications
Complications and prognosis
- BPPV: generally excellent prognosis with repositioning maneuvers; recurrence is common and may require repeat treatment
- Vestibular neuritis: most patients recover substantially over weeks via central compensation; a minority develop chronic dizziness or secondary BPPV
- Meniere disease: progressive, fluctuating course; can lead to permanent sensorineural hearing loss over time
- Central causes: prognosis depends on the underlying lesion; posterior circulation stroke carries risk of significant morbidity and recurrent cerebrovascular events if untreated
- Falls and injury: a major complication in elderly patients with any cause of vertigo, contributing to fractures and loss of independence
- Chronic unexplained dizziness can lead to functional impairment, anxiety, and reduced quality of life even after the acute vestibular lesion resolves
HINTS exam red flags for central cause = "INFARCT": Impulse Normal, Fast-phase Alternating (direction-changing nystagmus), Refixation on Cover Test (skew deviation present).
Practice questions
1. A 68-year-old woman reports brief episodes of spinning sensation lasting about 20-30 seconds whenever she rolls over in bed or looks up to reach a high shelf. She has no hearing loss, tinnitus, or neurologic symptoms. On examination, the Dix-Hallpike maneuver reproduces her vertigo with a brief rotatory nystagmus after a short latency. What is the most appropriate next step in management?
2. A 45-year-old man presents with sudden onset continuous vertigo, nausea, and vomiting that began 2 days ago and has not resolved. He has no hearing loss. On exam, head impulse testing is abnormal (corrective saccade) toward the affected side, nystagmus is unidirectional and horizontal, and there is no skew deviation. Which of the following is the most likely diagnosis?
3. A 55-year-old man with a history of hypertension and atrial fibrillation presents with sudden vertigo, double vision, and difficulty walking. On exam, the head impulse test is normal bilaterally, nystagmus changes direction with gaze, and a skew deviation is present on alternate cover testing. Which of the following is the most appropriate next step?
Frequently asked questions
What causes vertigo?
Vertigo is most often caused by inner ear (peripheral) problems such as BPPV, vestibular neuritis, or Meniere disease, and less commonly by brainstem or cerebellar (central) causes such as stroke. BPPV, caused by displaced calcium crystals in the inner ear canals, is the single most common cause. A careful history distinguishing brief positional spells from continuous vertigo helps narrow the cause.
What are the first symptoms of vertigo?
The first symptom is usually a sudden sensation that the room is spinning or that one's own body is rotating, often triggered by head movement. This is commonly accompanied by nausea, vomiting, unsteadiness, and sometimes sweating. Associated hearing loss, tinnitus, or neurologic symptoms like double vision or slurred speech point toward specific underlying causes and warrant urgent evaluation.
How is vertigo diagnosed?
Vertigo is diagnosed primarily through history and bedside examination, including the Dix-Hallpike maneuver for BPPV and the HINTS exam to differentiate peripheral from central causes. Blood tests are rarely helpful. MRI brain is reserved for cases with concerning features suggesting a central (brainstem or cerebellar) cause, since it is more sensitive than CT for early stroke.
Is vertigo curable?
Yes, in many cases vertigo is fully treatable or self-limited. BPPV is typically cured with a single canalith repositioning maneuver like the Epley maneuver, and vestibular neuritis usually resolves over weeks as the brain compensates. Meniere disease and vestibular migraine tend to be chronic and relapsing but can usually be well controlled with diet, medications, and lifestyle measures.
Vertigo vs dizziness — what is the difference?
Dizziness is a broad, nonspecific term covering any sensation of altered spatial orientation, while vertigo specifically refers to a false sense of spinning or rotational movement. Other types of dizziness include presyncope (lightheadedness before fainting), disequilibrium (imbalance while walking), and nonspecific dizziness. Correctly identifying true vertigo versus other dizziness types is the key first step in diagnosis.
Key drugs
Related conditions and differentials
Sources and further reading
StatPearls (NCBI Bookshelf)MedlinePlusWHO ICD-10: R42
Educational content for medical students, prepared by the WhiteCoat Pro editorial team with AI assistance; every page is reviewed by a second AI model for factual errors. It is not medical advice and does not replace the product label, local guidelines or a clinician.