Vestibular vs Cervicogenic Dizziness: How Physiotherapists Tell Them Apart

Dizziness is a common symptom in physiotherapy — particularly after whiplash, concussion, or prolonged neck pain. The problem is that "dizziness" covers several distinct presentations that require different treatment. Getting the wrong treatment not only fails to help — it can temporarily make symptoms worse.

Two of the most commonly confused types are vestibular dizziness and cervicogenic dizziness. A physiotherapist trained in vestibular assessment can distinguish them in a single clinical session. Here is what that distinction involves and why it matters.

What vestibular dizziness is

The vestibular system includes the inner ear structures (semicircular canals, utricle, saccule) and the vestibular nerve that transmits position and motion signals to the brainstem. Vestibular dizziness arises when something disrupts this system — either a peripheral problem (inner ear) or, less commonly, a central problem (brainstem or cerebellum).

The most common peripheral vestibular disorder in physiotherapy practice is BPPV — benign paroxysmal positional vertigo. BPPV occurs when calcium carbonate crystals (otoconia) detach from the utricle and migrate into one of the semicircular canals, creating false motion signals when the head changes position. The hallmark is brief, intense spinning vertigo triggered by specific head positions — lying down, rolling over in bed, looking up, or bending forward. The vertigo lasts seconds to a minute, not hours.

Other vestibular presentations that physiotherapists assess and manage include:

• Vestibular neuritis (sustained dizziness following a viral illness affecting the vestibular nerve)
• Post-concussion vestibular dysfunction (vestibular processing disruption following a traumatic brain injury)
• Unilateral vestibular hypofunction (reduced function on one side, often from neuritis or other inner ear pathology)

What cervicogenic dizziness is

Cervicogenic dizziness (also called cervicogenic vertigo or cervical dizziness) arises from the neck — specifically, from disrupted proprioceptive signaling in the upper cervical joints and muscles. The cervical spine has a high density of mechanoreceptors, particularly in the facet joints and deep cervical muscles (semispinalis cervicis, multifidus). These receptors contribute to the body's spatial orientation system alongside the vestibular system and vision.

When the upper cervical structures are injured — as in whiplash — or when deep cervical muscle function is disrupted by chronic pain or guarding, the proprioceptive signals from the neck can conflict with the vestibular and visual inputs. The brain interprets this mismatch as dizziness, unsteadiness, or light-headedness.

Cervicogenic dizziness tends to be:

• Accompanied by neck pain or stiffness (though not always)
• Aggravated by sustained neck postures (driving, desk work, looking over a shoulder)
• Associated with impaired smooth pursuit eye movements or joint position sense errors in the neck
• Less likely to involve the brief intense spinning characteristic of BPPV

The term "cervicogenic dizziness" is sometimes met with skepticism in medicine — partly because it was historically over-diagnosed, and partly because objective tests are harder to standardize than the nystagmus tests used in vestibular assessment. Current clinical evidence supports its existence as a distinct entity, particularly in the context of whiplash-associated disorders. A 2021 consensus statement in the Journal of Orthopaedic and Sports Physical Therapy (Reid et al.) addressed cervicogenic dizziness as a recognized clinical diagnosis requiring specific assessment criteria.

How physiotherapists assess each

The assessment is where the distinction is made. A physiotherapist with vestibular training will use a combination of tests in the first session.

Tests that point to vestibular causes

Dix-Hallpike test: The patient moves rapidly from sitting to lying with the head rotated 45 degrees. A positive test for BPPV produces observable nystagmus (involuntary rhythmic eye movement) and vertigo lasting less than a minute. The direction and delay of the nystagmus identifies which semicircular canal is affected.

Roll test (supine head roll): Used to assess the horizontal semicircular canal — a less common but distinct BPPV variant with different nystagmus characteristics and a different repositioning manoeuvre.

Head Impulse Test (HIT): A rapid head rotation test that assesses whether the vestibulo-ocular reflex is intact. A positive HIT (the eye cannot maintain fixation during the rapid head movement) suggests unilateral vestibular hypofunction.

Video head impulse test (vHIT) and caloric testing: More detailed vestibular function tests typically performed in a hospital vestibular lab or by specialized audiologists. Not done at physiotherapy clinics but relevant when the physiotherapy assessment is inconclusive.

Tests that point to cervicogenic causes

Cervical joint position error (JPE) test: The client wears a laser pointer on their head, moves to a target position on the wall, returns to neutral, and then tries to return to the original position with eyes closed. Larger-than-expected positioning errors suggest disrupted cervical proprioception.

Smooth pursuit neck torsion test: Eye tracking is assessed with the head in neutral, then with the upper body rotated to rotate the neck while the head stays fixed relative to the examiner. A significant change in smooth pursuit quality during neck rotation suggests cervicogenic contributions.

Manual assessment of the upper cervical spine: Palpation and passive movement testing of C1-C3 — if reproduction of the client's dizziness symptoms occurs with cervical manual assessment and not with vestibular provocation tests, the cervical spine is the likely source.

Oculomotor assessment: Saccades, smooth pursuit, and gaze stability are assessed for both vestibular and cervicogenic presentations — abnormalities can appear in both, but the pattern and associated findings help differentiate.

Why the treatment is completely different

This is the clinical reason the distinction matters: treating BPPV with cervicogenic exercises does nothing for the crystals; treating cervicogenic dizziness with a canalith repositioning manoeuvre does nothing for the cervical proprioception.

BPPV treatment: canalith repositioning

For BPPV, the treatment is a specific repositioning manoeuvre that moves the displaced crystals back into the utricle. The most widely used is the Epley manoeuvre for posterior canal BPPV — a sequence of head positions held for about 30 seconds each. A single session resolves most posterior canal BPPV cases; some require two or three sessions. There is a Cochrane review (Hilton & Pinder, 2014) supporting the Epley manoeuvre for BPPV, finding it safe and effective.

No neck exercises will move displaced crystals. No manual therapy to the cervical spine will resolve BPPV.

Cervicogenic dizziness treatment: cervical rehab and sensorimotor retraining

For cervicogenic dizziness, the treatment targets the cervical spine and the sensorimotor system that has been disrupted. This typically includes:

• Deep cervical flexor strengthening (e.g., cranio-cervical flexion training) to restore cervical neuromuscular control
• Gaze stabilization exercises to recalibrate the vestibular-ocular interaction in the context of cervical dysfunction
• Proprioceptive retraining — head-on-body movement exercises with visual and positional feedback
• Manual therapy to the upper cervical joints when restricted movement is contributing to aberrant signaling
• Postural correction and ergonomic assessment, particularly for desk workers whose cervicogenic dizziness is sustained by hours in a forward-head position

No repositioning manoeuvre will improve cervical proprioception. Performing Epley on someone with cervicogenic dizziness will produce discomfort during the manoeuvre and no durable improvement.

The mixed presentation

A complication worth naming: BPPV and cervicogenic dizziness can coexist. This is particularly common after whiplash, where the head acceleration-deceleration event can both displace otoconia (causing BPPV) and injure the upper cervical structures (causing cervicogenic dysfunction). In these cases, the BPPV is treated first with repositioning — because the false vestibular signal makes it harder to assess and treat the cervicogenic component. Once BPPV resolves, the cervicogenic picture becomes clearer.

Post-concussion dizziness is another complex presentation that may involve vestibular processing disruption, oculomotor problems, cervical dysfunction, and autonomic dysregulation — all simultaneously. That presentation warrants a clinician trained in both vestibular and concussion assessment.

What to expect at the first visit

If you come in reporting dizziness, unsteadiness, or vertigo — especially after a neck injury, concussion, or inner-ear illness — the first session will be primarily assessment. Your physiotherapist will ask about the character of the dizziness (spinning vs. light-headedness vs. unsteadiness), what triggers it, how long it lasts, and what other symptoms accompany it.

The Dix-Hallpike and roll test will typically be performed early in the session. If the result is positive for BPPV, treatment can begin in the same visit. If the assessment points toward cervicogenic dizziness, the plan will shift to cervical assessment and the start of a cervical retraining program.

We offer vestibular physiotherapy at our Lougheed, Coquitlam, and North Burnaby studios. Not all physiotherapists are trained in vestibular assessment — if you are booking specifically for dizziness, mention it when booking so we can match you with a vestibular-trained clinician.

This article is not a substitute for assessment by a regulated practitioner. If your dizziness is associated with sudden severe headache, double vision, slurred speech, or difficulty walking, seek emergency care.