What is the difference between benign paroxysmal positional vertigo (BPPV) and vertigo?

BPPV vs. Vertigo: Understanding the Relationship

Vertigo is a symptom—an illusory sensation of spinning—while BPPV is a specific disease that causes vertigo. Think of it this way: vertigo is like "chest pain" and BPPV is like "heart attack"—one is a symptom, the other is a diagnosis. 1

Key Distinctions

Vertigo (The Symptom)

• Definition: An illusory sensation of motion of either yourself or your surroundings when no actual motion exists 1
• Can be caused by many different conditions affecting the inner ear, vestibular nerve, or brain
• May be accompanied by nausea, vomiting, and balance problems
• Can last seconds, minutes, hours, or be continuous depending on the underlying cause

BPPV (The Disease)

BPPV is a specific inner ear disorder characterized by repeated episodes of positional vertigo 1. It has distinct features:

• Trigger: Vertigo occurs specifically with head position changes relative to gravity (rolling over in bed, looking up, bending over) 1
• Duration: Brief episodes lasting seconds to less than one minute 1
• Mechanism: Caused by dislodged calcium crystals (otoconia) floating in the semicircular canals of the inner ear 1
• Pattern: Paroxysmal (sudden onset), positional (triggered by specific movements), and benign (not life-threatening, though symptoms can be intense) 1
• Most common type: BPPV is the single most common cause of vertigo, accounting for 17-42% of all vertigo cases 1

Clinical Differentiation

BPPV fits into the "triggered episodic vestibular syndrome" category 1, meaning:

• Episodes are triggered by obligate head position changes
• Episodes are brief (typically <1 minute)
• No hearing loss occurs 1
• No constant severe dizziness between episodes 1
• Does not cause fainting 1

What BPPV Does NOT Cause (Important Pitfalls):

• Constant dizziness unaffected by position 1
• Hearing loss or tinnitus as primary symptoms 1
• Loss of consciousness 1

If these features are present, consider alternative diagnoses like Menière's disease, vestibular neuritis, or central causes.

Other Causes of Vertigo to Distinguish from BPPV

The differential diagnosis includes 1:

• Vestibular neuritis: Acute, continuous vertigo lasting days (not brief, positional episodes)
• Menière's disease: Episodic vertigo WITH hearing loss, tinnitus, and aural fullness
• Vestibular migraine: Spontaneous episodes lasting minutes to hours, often with headache history
• Stroke: Acute onset with neurologic signs, not purely positional
• Superior canal dehiscence: Triggered by pressure changes (Valsalva), not position alone

Clinical Significance

While BPPV may seem "benign" by name, untreated cases significantly impact quality of life 1. Patients experience:

• Increased fall risk, especially in elderly patients 1
• Impaired daily activities 1
• Anxiety about recurrence (70.97% experience events after initial treatment) 2
• Associated neck pain (87%), headaches (75%), and fatigue (85%) in chronic cases 3

The good news: BPPV responds to specific bedside maneuvers (Epley, Semont) with ~80% success rates in 1-3 treatments 1, unlike many other causes of vertigo that require prolonged medical management.

Bottom Line for Clinical Practice

When a patient says "I have vertigo," your job is to determine if it's BPPV (a treatable condition with specific positional triggers and brief duration) or another cause. Perform the Dix-Hallpike test for posterior canal BPPV or supine roll test for horizontal canal BPPV 1. If positive, treat immediately with canalith repositioning maneuvers—don't order brain imaging or prescribe meclizine, as neither is recommended for uncomplicated BPPV 4.