Vertigo is almost always caused by a problem in your inner ear or, less commonly, in your brain. The single most common cause is tiny calcium crystals shifting out of place inside your ear, a condition called BPPV that accounts for roughly half of all vertigo cases. But several other conditions can trigger that spinning sensation, and the pattern of your symptoms, how long episodes last, what sets them off, and whether you have hearing changes, points strongly toward a specific cause.
Loose Crystals in Your Inner Ear (BPPV)
Your inner ear contains tiny calcium crystals that help you sense gravity and linear movement. In benign paroxysmal positional vertigo (BPPV), these crystals break free and drift into the semicircular canals, the fluid-filled loops your brain uses to detect head rotation. When you move your head, the displaced crystals drag through the fluid and send false rotation signals to your brain. The result is intense spinning that typically lasts less than a minute.
BPPV has a very recognizable pattern. The vertigo hits when you change head position: rolling over in bed, tilting your head back in the shower, or bending forward. It comes on within seconds, peaks quickly, then fades. You might also notice your eyes jumping involuntarily during an episode. Between episodes, you feel normal or close to it.
The good news is that BPPV responds extremely well to a simple repositioning technique called the Epley maneuver, which guides the crystals back where they belong. In clinical trials, about 88 to 91 percent of patients were symptom-free within one week of treatment, whether the maneuver was performed by a clinician or self-administered at home. BPPV can recur, but the same technique works again.
Inflammation of the Balance Nerve
If your vertigo came on suddenly and has lasted hours or days without letting up, an inflamed balance nerve is a likely culprit. Two closely related conditions fall into this category, and the difference between them is hearing.
Vestibular neuritis affects the nerve connecting your inner ear to your brain, causing prolonged, severe vertigo without significant hearing loss. Labyrinthitis involves inflammation of the inner ear itself, so you get the same intense vertigo plus hearing loss or ringing in the affected ear. Both are usually triggered by a viral infection and tend to be a one-time event, though full recovery of your balance sense can take weeks to months. During that period, your brain gradually recalibrates using signals from your other ear and your vision.
Ménière’s Disease
Ménière’s disease produces episodes of vertigo that last significantly longer than BPPV, typically 20 minutes to 12 hours, sometimes up to 24 hours. A diagnosis requires at least two such episodes along with documented hearing loss on a hearing test and either ringing in the ear (tinnitus) or a feeling of fullness or pressure in the ear. These symptoms tend to cluster on one side.
The underlying problem is abnormal fluid buildup in the inner ear, though why this happens isn’t fully understood. Ménière’s is a chronic condition with unpredictable flare-ups. Over time, hearing loss in the affected ear can become permanent. Management focuses on reducing the frequency and severity of episodes, often through dietary salt restriction and medications that reduce fluid retention.
Vestibular Migraine
You don’t need a headache to have a vestibular migraine. This condition causes moderate to severe vertigo or motion-triggered dizziness with nausea, and episodes last anywhere from 5 minutes to 72 hours. Some people get a headache alongside the vertigo, but many don’t, which is why it often goes undiagnosed for years. A history of migraines (even ones you had decades ago) is a strong clue.
Vestibular migraine is one of the most common causes of recurrent vertigo, and it’s frequently confused with Ménière’s disease because both cause episodic spinning. The distinguishing factor is that vestibular migraine doesn’t produce permanent hearing loss. Triggers are similar to traditional migraines: stress, sleep changes, certain foods, hormonal shifts, and sensory overload. Treatment follows migraine prevention strategies, including lifestyle modifications and preventive medications.
Persistent Dizziness After Vertigo Resolves
Some people recover from an initial vertigo-causing event, like BPPV or vestibular neuritis, but continue feeling dizzy, unsteady, or “off” for months. This is a recognized condition called persistent postural-perceptual dizziness (PPPD). It’s not the original problem lingering. Instead, your brain has essentially become hypersensitive to motion and visual input.
PPPD symptoms are present on most days for three months or more. They worsen when you’re standing upright, during any kind of movement (even riding in a car), and in visually busy environments like grocery stores or scrolling on a screen. The dizziness is real, not imagined, but it’s driven by changes in how your brain processes balance signals rather than ongoing inner ear damage. Treatment typically involves vestibular rehabilitation therapy, a form of physical therapy that retrains your brain’s balance processing, sometimes combined with medication.
When Vertigo Signals Something Serious
The vast majority of vertigo comes from inner ear problems that are treatable and not dangerous. But vertigo can occasionally signal a stroke affecting the back of the brain, and this is the scenario that matters most to recognize quickly.
Inner ear vertigo (peripheral vertigo) produces eye movements that beat consistently in one direction. Brain-related vertigo (central vertigo) produces eye movements that change direction when you look to different sides. Emergency physicians use a bedside examination called HINTS that checks eye movement patterns, and it’s remarkably accurate. In one study of 357 patients presenting with acute vertigo, this exam caught 100% of strokes, outperforming even MRI, which can miss up to 20% of strokes in the back of the brain in the first 24 to 48 hours.
Seek emergency care if your vertigo is accompanied by difficulty speaking, swallowing, or walking, double vision, severe headache unlike anything you’ve experienced, weakness or numbness on one side of your body, or inability to walk at all. New, sudden vertigo that doesn’t fit the brief positional pattern of BPPV also warrants prompt evaluation, particularly if you have vascular risk factors like high blood pressure, diabetes, or a history of smoking.
What Your Symptom Pattern Tells You
The duration and triggers of your vertigo episodes are the most useful clues to identifying the cause. Brief episodes (under a minute) triggered by head position changes point to BPPV. Episodes lasting 20 minutes to several hours with ear symptoms suggest Ménière’s disease. Episodes lasting minutes to days with migraine features suggest vestibular migraine. A single prolonged episode lasting days, especially after a cold, points to vestibular neuritis or labyrinthitis. Constant low-grade dizziness worsened by standing and visual stimulation suggests PPPD.
Medication for Vertigo Symptoms
Over-the-counter motion sickness medications like meclizine can take the edge off acute vertigo episodes, and anti-anxiety medications are sometimes prescribed as well. These drugs work by dampening the signals your brain receives from the vestibular system. They’re useful for getting through the worst of an acute episode, but they’re not a long-term solution. The American Geriatric Society specifically recommends against routine use of these drugs in older adults because they increase the risk of falls, which is especially dangerous given that balance is already compromised.
For most vertigo conditions, the real treatment targets the underlying cause: repositioning maneuvers for BPPV, vestibular rehabilitation for neuritis and PPPD, migraine prevention strategies for vestibular migraine, and fluid management for Ménière’s. Short-term symptom relief has its place during acute episodes, but relying on it long-term can actually slow your brain’s ability to compensate and restore normal balance function.