Vertigo, the sensation that you or the room around you is spinning, is remarkably common. Roughly 15% of U.S. adults experience problems with dizziness or balance in any given year, representing over 33 million people. The cause is almost always rooted in your inner ear, though in a small number of cases the problem originates in the brain. Understanding which type you’re dealing with matters, because the treatments are very different.
The Most Common Cause: Displaced Crystals
Benign paroxysmal positional vertigo, or BPPV, is by far the leading cause of vertigo. It happens when tiny calcium crystals called otoconia break loose from their normal position in a part of the inner ear called the utricle. Once free, these crystals drift into the semicircular canals, the fluid-filled tubes your body uses to sense head rotation. The loose crystals settle at the lowest point of the canal and cause the fluid to shift abnormally, which tricks your balance nerve into thinking your head is moving when it isn’t.
BPPV produces short, intense bursts of spinning that last anywhere from a few seconds to about a minute. It’s triggered by specific head movements: rolling over in bed, tilting your head back in the shower, or looking up at a high shelf. Between episodes, you may feel perfectly fine or have mild lingering unsteadiness. It’s not dangerous, and it’s highly treatable.
Inner Ear Infections and Inflammation
Two related conditions cause prolonged vertigo that lasts days rather than seconds. Vestibular neuritis is inflammation of the nerve that connects your inner ear to your brain. It typically follows a viral illness and produces severe, constant vertigo without hearing loss. Labyrinthitis affects the inner ear structures themselves, causing the same intense vertigo but with hearing loss or ringing in the affected ear. Both conditions usually hit suddenly, peak over the first day or two, and then gradually improve over weeks. The vertigo may be so intense during the acute phase that nausea and vomiting are unavoidable.
Ménière’s Disease
If your vertigo comes in unpredictable episodes that last anywhere from 20 minutes to 12 hours, and you also notice hearing changes, ringing (tinnitus), or a feeling of fullness or pressure in one ear, Ménière’s disease is a possibility. It’s a chronic inner ear disorder tied to abnormal fluid buildup. A definite diagnosis requires at least two spontaneous episodes of vertigo in that 20-minute to 12-hour range, plus documented hearing loss on a hearing test, plus fluctuating ear symptoms like tinnitus or fullness that can’t be explained by another condition.
Ménière’s is less common than BPPV, but it can be more disruptive because the episodes are longer, less predictable, and can worsen hearing over time. High sodium intake can affect fluid levels in the inner ear and trigger or worsen episodes, so dietary changes are often part of managing the condition.
Vertigo Linked to Migraine
Vestibular migraine is one of the most underdiagnosed causes of vertigo. You don’t need to have a headache during the episode for migraine to be the culprit. The spinning or rocking sensation can last anywhere from five minutes to 72 hours. At least half the episodes need to be accompanied by migraine-like features: a one-sided or pulsating headache, sensitivity to light and sound, or a visual aura. A history of migraines, even if they’ve been dormant for years, makes this diagnosis more likely.
What makes vestibular migraine tricky is that many people don’t connect their dizziness to migraine at all, especially if the headache component is mild or absent. If you’ve had migraines in the past and now experience recurring unexplained vertigo, this is worth discussing with your doctor.
How Vertigo Gets Diagnosed
For suspected BPPV, the key test is simple and happens right in the exam room. You’ll sit on an exam table, and your provider will turn your head 45 degrees to one side. Then they’ll guide you to lie back quickly so your head hangs slightly off the edge with one ear pointing toward the floor. They hold your head the entire time. If the crystals are displaced, your eyes will start making involuntary jerking movements called nystagmus within a few seconds. The ear that’s facing the floor when the nystagmus appears is the affected one. The same test is repeated on the other side to compare.
For other types of vertigo, providers rely on your description of timing and triggers. How long do episodes last? What sets them off? Do you have hearing changes? These details narrow the diagnosis more effectively than most imaging. Hearing tests can confirm or rule out Ménière’s disease. Brain imaging is reserved for cases where a central cause like stroke is suspected.
Red Flags That Need Urgent Attention
Most vertigo is uncomfortable but not dangerous. However, strokes in the back of the brain can mimic inner ear problems closely enough to fool even experienced clinicians. Fewer than 20% of stroke patients who present with acute vertigo have obvious neurological signs like limb weakness or slurred speech, and standard stroke screening scales can score a zero even when a posterior circulation stroke is occurring.
Seek emergency care if your vertigo is accompanied by:
- Sudden severe headache or neck pain, which could indicate a blood vessel problem
- Double vision, difficulty swallowing, or facial drooping
- Inability to walk or stand due to severe imbalance beyond what the spinning alone would explain
- New hearing loss with vertigo that came on suddenly and doesn’t resolve
In the emergency setting, a specialized three-part eye examination called the HINTS test (checking head impulse response, the pattern of eye jerking, and eye alignment) has been shown to rule out stroke more accurately than early MRI when performed by trained clinicians.
Treatment Options by Cause
BPPV has one of the most satisfying treatments in medicine. A procedure called the Epley maneuver uses a specific sequence of head and body positions to guide the loose crystals out of the semicircular canal and back to a location where they won’t cause problems. It works in about 8 out of 10 people, sometimes in a single session. Your provider may need to repeat it a few times. Once the crystals are repositioned, the vertigo stops. You can also learn a version to do at home if episodes recur.
Vestibular neuritis and labyrinthitis are managed with supportive care during the acute phase. Anti-nausea and motion sickness medications can help with the worst of the symptoms in the first few days. However, these medications are generally meant for short-term use. Longer-term reliance on them can actually slow recovery because they dampen the signals your brain needs to recalibrate its balance system. Most people recover through a natural process called vestibular compensation, where the brain gradually learns to rely more on the healthy ear and on visual and body-position cues.
Vestibular rehabilitation, a specialized form of physical therapy, speeds up this compensation process. A therapist guides you through exercises that deliberately challenge your balance in controlled ways, training your brain to adapt. This approach is helpful for any type of vertigo that leaves lingering unsteadiness.
Ménière’s disease management focuses on reducing the frequency and severity of episodes. Lowering sodium intake to decrease inner ear fluid pressure is a first-line strategy. Limiting caffeine and alcohol may also help some people, though the evidence is stronger for sodium. Medications can manage acute episodes, and in severe cases that don’t respond to conservative measures, procedures to reduce inner ear pressure or function may be considered.
Vestibular migraine responds to many of the same preventive strategies used for regular migraines: identifying and avoiding personal triggers, maintaining consistent sleep, managing stress, and in some cases using preventive medications prescribed by your doctor.