Dizziness When Turning Your Head: BPPV and Other Causes

What is BPPV and what causes it?

The inner ear contains the vestibular system — structures that sense head position and movement. One part of this system, the utricle, contains tiny calcium carbonate crystals called otoconia (or "ear rocks"). When these crystals become dislodged and migrate into one of the fluid-filled semicircular canals, they disrupt the normal fluid movement that signals head rotation. The result is a sudden, intense spinning sensation (vertigo) triggered by specific head positions — the sensation that the room is moving even when you are still.

The AAO-HNS clinical practice guideline on BPPV describes it as the most common cause of vertigo in adults 1Ref 1Bhattacharyya N, Gubbels SP, Schwartz SR, Edlow JA, El-Kashlan H, Fife T, et al. (2017).Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update).BPPV as the most common cause of vertigo; Dix-Hallpike test for diagnosis; Epley maneuver as first-line treatment; guidance against routine imaging and against vestibular suppressants as primary treatment; home maneuver instruction. The dislodged crystals can result from a head injury, prolonged bed rest, inner ear infection, aging, or — most often — no identifiable cause at all.

What does BPPV feel like?

• Brief episodes of intense spinning or room-tilting vertigo — usually lasting less than a minute
• Triggered by specific movements: rolling over in bed, sitting up from lying, tilting the head back (looking up), bending forward to pick something up
• Nystagmus — rapid, involuntary eye movements visible during the episode, which a clinician can observe during diagnostic testing
• Nausea during the episode, but usually not vomiting
• No hearing change — BPPV does not affect hearing

The symptoms often seem alarming on first experience but the episodes themselves are brief. Between episodes, many people feel completely normal, though some report a residual sense of unsteadiness.

How is BPPV diagnosed?

The Dix-Hallpike test is the standard diagnostic maneuver. A clinician moves the patient from sitting to lying with the head turned to one side and observes the eyes for nystagmus. The pattern of nystagmus — its direction, how quickly it starts, and how long it lasts — identifies which canal is involved and which ear is affected. This matters because it determines which repositioning maneuver to use 1Ref 1Bhattacharyya N, Gubbels SP, Schwartz SR, Edlow JA, El-Kashlan H, Fife T, et al. (2017).Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update).BPPV as the most common cause of vertigo; Dix-Hallpike test for diagnosis; Epley maneuver as first-line treatment; guidance against routine imaging and against vestibular suppressants as primary treatment; home maneuver instruction.

BPPV does not require imaging to diagnose. An MRI or CT is considered only if the presentation is atypical or if there are other neurological symptoms.

What is the Epley maneuver and does it work?

The Epley maneuver (canalith repositioning procedure) is a series of guided head movements designed to guide the displaced crystals back out of the semicircular canal. A Cochrane systematic review found the Epley maneuver to be an effective and safe treatment for BPPV of the most common type (posterior canal BPPV), with the majority of patients experiencing resolution or marked improvement after one or two treatments 2Ref 2Hilton MP, Pinder DK (2014).The Epley (canalith repositioning) manoeuvre for benign paroxysmal positional vertigo.Epley maneuver is an effective and safe treatment for posterior canal BPPV with most patients resolving or markedly improving.

The procedure is performed in a clinician's office — typically by an audiologist, ENT specialist, physical therapist with vestibular training, or primary care clinician familiar with the maneuver. It takes only a few minutes. Some clinicians also teach patients a home version (the modified Epley or Semont maneuver), which can be performed independently once the affected ear and canal have been identified 1Ref 1Bhattacharyya N, Gubbels SP, Schwartz SR, Edlow JA, El-Kashlan H, Fife T, et al. (2017).Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update).BPPV as the most common cause of vertigo; Dix-Hallpike test for diagnosis; Epley maneuver as first-line treatment; guidance against routine imaging and against vestibular suppressants as primary treatment; home maneuver instruction.

What else can cause dizziness with head movement?

Not all positional dizziness is BPPV. Other causes to consider include:

Meniere's disease — causes episodes of vertigo (lasting minutes to hours), fluctuating hearing loss, tinnitus, and ear fullness. Unlike BPPV, episodes are not brief and not purely positional 3Ref 3Basura GJ, Adams ME, Monfared A, Schwartz SR, Antonelli PJ, Burkard R, et al. (2020).Clinical Practice Guideline: Ménière's Disease.Ménière's disease as a distinct cause of vertigo with longer episodes, hearing fluctuation, and tinnitus — contrasted with brief positional nature of BPPV.

Vestibular neuritis or labyrinthitis — acute viral inflammation of the vestibular nerve causes prolonged, severe vertigo (hours to days) that then resolves but leaves residual imbalance. Head movement worsens symptoms but the episode is not triggered in the same brief, predictable pattern as BPPV.

Central vertigo — less common but important to recognize. Causes include stroke, multiple sclerosis, or cerebellar tumors. Features that suggest a central cause include neurological symptoms (double vision, slurred speech, weakness, numbness), inability to walk, or a form of nystagmus that does not fit the BPPV pattern. Central causes require urgent evaluation.

Orthostatic hypotension — lightheadedness on standing or changing position rapidly, caused by a drop in blood pressure, can mimic positional symptoms. The mechanism and quality of sensation are different from true vertigo.

When should I see a clinician?

See a clinician for any new, recurrent, or persistent dizziness triggered by head movement. Typical uncomplicated BPPV can be evaluated and treated by an audiologist, an ENT specialist, or a primary care clinician familiar with vestibular assessment. The AAO-HNS guideline recommends against routinely treating with vestibular-suppressant medications (such as meclizine) as the primary approach to BPPV, as repositioning maneuvers are more effective 1Ref 1Bhattacharyya N, Gubbels SP, Schwartz SR, Edlow JA, El-Kashlan H, Fife T, et al. (2017).Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update).BPPV as the most common cause of vertigo; Dix-Hallpike test for diagnosis; Epley maneuver as first-line treatment; guidance against routine imaging and against vestibular suppressants as primary treatment; home maneuver instruction.

Gale can evaluate new dizziness symptoms and determine whether you need an ENT or audiology referral, or whether primary care management is appropriate.