The spinning comes from crystals that drifted out of place.
Benign paroxysmal positional vertigo — BPPV — is described by the National Institute on Deafness and Other Communication Disorders as a brief, intense episode of vertigo brought on by a specific change in head position. Vertigo here means the sense that you or your surroundings are turning.
Your inner ear contains tiny calcium crystals called otoconia. When some of them come loose and tumble into one of the semicircular canals, they interfere with how that canal's sensor reads motion. The American Academy of Otolaryngology–Head and Neck Surgery describes the crystals as becoming dislodged and settling on sensors in the wrong canal, which is why an ordinary movement can register as violent spinning.
What people tend to notice.
The trigger is position, not activity. NIDCD notes that symptoms may show up when you bend down to look under something, tilt your head to look up or over your shoulder, or roll over in bed. Individual episodes are short — MedlinePlus puts them at a few seconds to minutes — which is part of what distinguishes the pattern from vertigo that arrives on its own and stays.
BPPV can follow a head injury, or it can develop simply with age. None of this means your symptoms are BPPV. Several inner-ear and neurological conditions produce overlapping sensations, and only an examination can sort them apart.
- Note exactly which movements set it off, and which ones reliably do not.
- Time a typical episode — seconds, minutes, or longer.
- Record any hearing change, ringing, headache, or lasting unsteadiness between episodes.
- Mention any head injury, however minor, and bring a full medicine list.
Vertigo that does not fit the positional pattern deserves a closer look.
BPPV vertigo is brief and provoked by a change in head position. Vertigo that arrives at rest, lasts for hours, or comes with double vision, slurred speech, weakness, numbness, or a severe headache does not fit that pattern and needs urgent medical assessment instead.
MedlinePlus lists sudden dizziness and loss of balance or coordination among stroke warning signs. If those are happening now, call 911 rather than booking an appointment — this is an emergency-room situation, not an office one.
Positional testing is how the question actually gets answered.
Because position provokes BPPV, clinicians reproduce the position and watch your eyes. The AAO-HNS guideline directs clinicians to diagnose posterior semicircular canal BPPV when the Dix-Hallpike maneuver — moving you from sitting to lying back with your head turned and your neck extended — provokes vertigo together with a characteristic eye movement. When findings point to a different canal, the guideline directs the clinician to perform, or refer to someone who can perform, a supine roll test.
That same guideline advises against routine scans for patients who meet the diagnostic criteria without additional signs, and against treating BPPV routinely with vestibular suppressant medications such as antihistamines or benzodiazepines. Repositioning procedures are treatments a qualified clinician performs or refers out — this page deliberately does not teach you to move your own head through them, because the right maneuver depends on which canal is involved and that is established by examination, not by guesswork.
The stakes are practical rather than dire: AAO-HNS notes that older patients with BPPV have a higher incidence of falls, depression, and trouble with daily activities. That is a reason to get it properly identified.
What to ask when you call Gates Brain Health.
Gates Brain Health is a functional neurology practice in Reno, Nevada. Dr. Randall Gates, D.C., DACNB, works with people living with vestibular and other chronic neurological concerns. He is a board-certified chiropractic neurologist, not a medical doctor, and this care sits alongside your primary care and any specialist you see rather than replacing them. Whether the practice is a sensible fit for positional vertigo is a conversation to have on a call, not something a web page can settle.
The practice offers a free consultation before you become a patient. Examination there can include videonystagmography (VNG), a test that records involuntary eye movements to help evaluate the vestibular system; the fuller picture of testing and how care is structured lives on the treatment page.
To ask about a consultation, call (775) 507-2000, Monday through Friday, 8:00 AM to 5:00 PM. Save your medical details for the phone call rather than sending them through the website.
- Has my vertigo pattern been assessed with positional testing, and by whom?
- Which canal was implicated, and what did the eye findings show?
- What would you look for that would send me back to an ENT or my physician?
- What does a first evaluation involve, and how long does it take?