Dizziness is one of the most common complaints patients bring to healthcare professionals—yet it’s also one of the most misunderstood. It affects about 35% of people at some point in their lives and can stem from a range of causes, including musculoskeletal, neurological, cardiovascular, or vestibular issues.
One vestibular condition, in particular, stands out due to its frequency and treatability: Benign Paroxysmal Positional Vertigo, or BPPV.
Why Talk About BPPV?
BPPV represents around 17.1% of all vestibular disorders, making it the most common vestibular pathology. The good news? It’s also one of the most easily diagnosed and effectively treated causes of vertigo—often in a single physiotherapy session.
What Exactly Is Dizziness?
Dizziness is a broad term, and many patients struggle to describe what they’re experiencing. That’s why physiotherapists break it down into four main types to help pinpoint the root cause:
- Vertigo – A definite spinning or rotational sensation. Often vestibular in origin.
- Presyncope – A feeling of lightheadedness or near-fainting. Usually cardiovascular.
- Disequilibrium – A sense of imbalance or unsteadiness without spinning. Can be neurological or vestibular.
- Lightheadedness – A vague, floating feeling. Often psychiatric or metabolic in nature.
Understanding the type of dizziness is essential, but we always confirm with a physical examination before reaching a diagnosis.
What is BPPV?
BPPV is caused by calcium carbonate crystals (called otoconia) that become dislodged from their normal position in the inner ear. These crystals then float into one of the semicircular canals, usually the posterior canal, where they don’t belong.
In a healthy vestibular system, fluid in the semicircular canals moves only in response to actual head movement. But in BPPV, the free-floating crystals cause this fluid to shift inappropriately, triggering hair cells in the inner ear to send false signals to the brain. This mismatch results in the sensation of vertigo—your brain thinks you’re moving when you’re not.
Common BPPV Symptoms
People with BPPV often describe brief but intense episodes of vertigo, usually lasting a few seconds to a couple of minutes. These are typically triggered by head movements, such as:
- Turning over in bed
- Lying down
- Sitting up from a lying position
- Bending forward
- Tilting the head back
These symptoms can be frightening—but fortunately, they are highly treatable.
Diagnosing BPPV: The Dix-Hallpike Test
The Dix-Hallpike Test is considered the gold standard for diagnosing posterior canal BPPV.
Here’s how it works:
- The patient sits upright, with their head turned 45° to one side.
- The physiotherapist then quickly lowers them into a lying position with the head extended about 20° below horizontal.
- If BPPV is present, this movement causes the dislodged otoconia to shift, triggering vertigo and nystagmus (involuntary eye movements).
If the test is positive, treatment can begin immediately—typically using the Epley maneuver, a simple, guided repositioning technique.
BPPV Mechanisms: Two Types
There are two ways the crystals can interfere with the vestibular system:
- Canalolithiasis – The crystals float freely within the canal. This causes a delayed onset of vertigo that stops once the crystals settle.
- Cupulolithiasis – The crystals attach to a sensory structure called the cupula. This leads to immediate and sustained vertigo while in the triggering position.
Both types can be addressed through specific maneuvers.
Differential Diagnosis: Is It Really BPPV?
It’s important to distinguish between peripheral causes (like BPPV) and central causes (like a stroke or neurological disorder). Your physiotherapist will assess eye movements, balance, symptom patterns, and medical history to help rule out more serious conditions.
Who’s at Risk?
- Older adults are particularly at risk. About 50% of people over 60 experience some vestibular dysfunction, which significantly increases their risk of falls and balance-related injuries.
- BPPV can occur spontaneously or after a head injury, viral infection, or prolonged bed rest.
How Long Does It Last?
- 90% of BPPV cases resolve with just one physiotherapy session using the correct repositioning technique.
- Without treatment, symptoms often resolve naturally:
- Posterior canal BPPV: ~39 days
- Horizontal canal BPPV: ~16 days
However, professional treatment speeds up recovery dramatically and reduces the risk of falls or anxiety from recurring episodes.
How Do We Treat BPPV?
The Epley maneuver is a highly effective, non-invasive treatment. It involves a series of head and body movements that guide the crystals out of the semicircular canal and back to their proper place.
Your physiotherapist will:
- Confirm the diagnosis with the Dix-Hallpike Test
- Guide you through the Epley maneuver
- Provide education and follow-up to reduce recurrence
Final Thoughts
If you’re experiencing vertigo or dizziness—especially triggered by movement—don’t ignore it. BPPV is a common, well-understood condition that responds incredibly well to physiotherapy. One session could be all you need to get back to feeling balanced and confident.
