Initial Management of New-Onset Vertigo in Adults
For an adult with new-onset vertigo of unclear etiology, immediately perform bedside vestibular examination (Dix-Hallpike maneuver and supine roll test) to diagnose BPPV before considering any imaging, and use the HINTS examination to differentiate peripheral from central causes if the patient presents with acute vestibular syndrome.
Immediate Clinical Assessment
The priority is determining whether vertigo is peripheral (benign) or central (potentially life-threatening). Your clinical examination is more sensitive than early imaging for this distinction.
Key History Elements to Obtain:
- Timing and triggers: Position-triggered episodes suggest BPPV; spontaneous sustained vertigo suggests vestibular neuritis or central causes 1
- Duration: Brief episodes (seconds to minutes) point to BPPV; sustained vertigo (hours to days) suggests vestibular neuritis or stroke 1, 2
- Associated symptoms:
- Hearing loss suggests Meniere disease
- Headache, visual changes, or neurologic symptoms are red flags for central causes
- BPPV does NOT cause hearing loss, syncope, or constant severe dizziness 3
Essential Bedside Examination:
Perform these maneuvers in sequence:
Dix-Hallpike maneuver (for posterior canal BPPV): Bring patient from upright to supine with head turned 45° to one side and neck extended 20°. Positive test shows torsional upbeating nystagmus 3. Repeat on opposite side if initially negative.
Supine roll test (for lateral canal BPPV): If Dix-Hallpike shows horizontal or no nystagmus but history suggests BPPV 3
HINTS examination (for acute vestibular syndrome lasting >24 hours):
- Head Impulse test (Halmagyi test)
- Nystagmus assessment
- Test of Skew deviation
This bedside exam is more sensitive than early MRI for posterior circulation stroke 4, 5
Orthostatic vital signs and full neurologic examination 1
Symptomatic Management
For BPPV (Most Common Cause):
Treat immediately with canalith repositioning procedure (Epley maneuver) - do NOT use vestibular suppressants 3. This has ~80% success rate with 1-3 treatments 3.
- No postprocedural positioning restrictions needed 3
- Patients may have residual motion sensitivity for days to weeks after successful treatment 3
- Reassess within 1 month 3
For Acute Vestibular Syndrome (Vestibular Neuritis):
- Vestibular suppressants (antihistamines, benzodiazepines) ONLY for acute symptom relief in first 24-48 hours 1
- Do NOT use vestibular suppressants routinely or long-term 3 - they delay central compensation
- Initiate vestibular rehabilitation exercises early 1
Medications to Avoid:
Clinicians should NOT routinely treat vertigo with vestibular suppressant medications 3. Reserve these only for severe acute distress (nausea/vomiting) in the first 1-2 days.
Urgent Evaluation Plan
When Imaging is NOT Needed:
Do not obtain imaging if patient meets diagnostic criteria for BPPV with typical findings and no red flag symptoms 3. The 2024 ACR guidelines emphasize that imaging is unnecessary for typical BPPV with positive Dix-Hallpike testing 6.
When Urgent Imaging IS Required:
Obtain MRI brain (preferred over CT) if any of these are present:
- Central features on HINTS exam
- Atypical or negative Dix-Hallpike with persistent positional symptoms (concern for central positional vertigo) 6
- New neurologic deficits
- Severe headache
- Risk factors for stroke
- Inability to walk
Critical caveat: Non-contrast CT has only 16% sensitivity for posterior fossa ischemia, and MRI can be falsely negative in up to 20% of stroke cases in first 48 hours 5. Clinical examination trumps negative early imaging.
When Vestibular Testing is NOT Needed:
Do not order vestibular testing (ENG, VNG, caloric testing) in patients meeting BPPV criteria without additional vestibular symptoms 3.
Red Flags Requiring Urgent Evaluation:
- Inability to stand or walk
- New focal neurologic deficits
- Severe headache (worst of life, thunderclap)
- Diplopia or visual field defects
- Dysarthria or dysphagia
- Altered mental status
- Central pattern on HINTS exam
Disposition Algorithm:
- BPPV confirmed: Treat with repositioning, discharge with return precautions, follow up in 1 month 3
- Vestibular neuritis (peripheral): Symptomatic treatment, vestibular rehabilitation referral, ENT follow-up 1, 4
- Central features or red flags: Admit for neurologic evaluation and MRI 4
- Unresolved after treatment: Re-evaluate for missed central causes or refer to specialist 3
Common Pitfalls:
- Ordering CT/MRI reflexively without performing Dix-Hallpike - this is the dominant diagnostic error in vertigo care 7
- Using vestibular suppressants long-term, which delays recovery 3
- Missing BPPV because symptoms seem "too severe" - BPPV can be intensely disabling 3
- Trusting negative early imaging over concerning clinical findings 5