Dizziness & Vertigo
When the Inner Ear Sends a False Spin Signal
General information from an emergency physician. It adds to your discharge papers and does not replace them or your own doctor. What this site is and isn’t
Key Takeaways:
- Dizziness has many causes. BPPV is one common inner-ear cause.
- A repositioning maneuver can help confirmed BPPV faster than waiting alone.
- New neurologic symptoms or trouble walking need immediate reassessment.
About Your Diagnosis & ED Workup
Dizziness has many causes. It may come from the inner ear or brain. It may also come from the heart, blood pressure, blood sugar, or medicines.
BPPV is a type of inner-ear vertigo. Tiny calcium crystals move into the wrong fluid-filled tube. Head movement then sends the brain a false spinning signal.
BPPV often causes brief spinning when the head moves. A trained clinician must check the eyes and balance system. This helps separate BPPV from a brain cause, such as stroke.
An early MRI can miss a small stroke in the back of the brain. A trained clinician’s eye exam can find more of these strokes.
First Steps & Evidence-Based Home Care
If a clinician confirmed BPPV, they may teach you a maneuver. Doing it at home can work as well as expert treatment.
Do not repeat an old maneuver without checking first. The crystals may return in a different tube. That tube may need a different maneuver.
You do not need to sleep sitting upright after a repositioning maneuver. Position restrictions after treatment are not recommended.
Meclizine can cause sleepiness. Do not drive or use machinery after taking it.
Timeline & Expected Recovery Course
After a repositioning maneuver, improvement often begins within 24 to 48 hours.
In one trial, the median recovery time was 2 days, with a range of 1 to 20 days.
Without treatment, median resolution was 7 days for horizontal-canal BPPV and 17 days for posterior-canal BPPV.
BPPV can return. About 10% to 18% have another episode within one year.
Lingering imbalance matters because it raises fall risk. Vestibular rehabilitation can help residual dizziness and balance.
Emergency Red Flags (When to Return Immediately)
Return to the emergency department immediately for any of these. This list is not exhaustive.
- New double vision, slurred speech, trouble swallowing, facial droop, or one-sided weakness or numbness.
- Vertigo that stays continuous for more than 24 hours without positional triggers.
- Severe unsteadiness or being unable to walk.
- New hearing loss in one ear.
- A sudden severe headache, especially at the back of the head.
Reviewed September 3, 2026