Vertigo is usually caused by a problem in your inner ear or brain that disrupts your sense of balance

Vertigo is the sensation that you or the room around you is spinning, even when you're standing still. It happens because your brain receives conflicting signals about where your body is in space. Most vertigo comes from your inner ear—the part of your ear that controls balance—sending wrong information to your brain. Less often, vertigo signals a problem in the brain itself. The cause matters because some are harmless and pass on their own, while others need treatment to stop.

The spinning sensation feels real and can be severe enough to make you nauseous, unsteady, or unable to walk straight. But vertigo itself is not a disease—it's a symptom that something in your balance system is not working correctly. Figuring out what's causing it is the first step toward relief.

Key Takeaways

  • Most vertigo comes from the inner ear, where tiny crystals can shift out of place or fluid can build up and throw off your balance signals.
  • Benign paroxysmal positional vertigo (BPPV) is the most common cause and happens when head position changes trigger spinning sensations that usually last seconds to minutes.
  • Vestibular neuritis and labyrinthitis are inner ear infections or inflammation that cause vertigo lasting days to weeks, often with hearing loss or ear fullness.
  • Brain-based causes like stroke or multiple sclerosis are less common but more serious, and usually come with other neurological symptoms like weakness or vision changes.
  • A doctor can often identify the cause through simple physical tests, medical history, and sometimes imaging or hearing tests.

Benign Paroxysmal Positional Vertigo (BPPV) — the most common inner ear cause

BPPV happens when tiny calcium carbonate crystals in your inner ear come loose and move into the wrong part of the balance canal. When you move your head—turning over in bed, looking up, or bending down—these crystals shift and trigger the balance nerve, sending a false signal that you're spinning. The spinning usually stops within a minute or so once you hold your head still.

BPPV is the single most common cause of vertigo, especially in people over 60. It can happen after a head injury, but often there's no clear trigger—the crystals just come loose over time. The condition is not dangerous, but the sudden spinning can make you fall or feel panicked. A doctor can diagnose BPPV with a simple test called the Dix-Hallpike maneuver, where you lie back quickly with your head hanging off the edge of the table. If your eyes move in a specific pattern, BPPV is likely the cause.

Vestibular neuritis and labyrinthitis — inner ear inflammation

Vestibular neuritis is inflammation of the nerve that carries balance signals from your inner ear to your brain. Labyrinthitis is inflammation of the inner ear itself. Both usually follow a viral infection—often a cold or flu—and can cause severe vertigo that lasts days or even weeks. The spinning is usually constant rather than triggered by head movement, and you may feel nauseous enough to vomit.

Labyrinthitis often comes with hearing loss or a feeling of fullness in the affected ear, while vestibular neuritis typically does not. Both conditions are self-limiting, meaning they improve on their own as the inflammation settles, though recovery can take weeks. A doctor may order an MRI or hearing test to rule out other causes and confirm the diagnosis. Antiviral medication may help if started early, though evidence is mixed.

Meniere's disease — fluid buildup in the inner ear

Meniere's disease happens when fluid builds up inside the inner ear, increasing pressure and triggering vertigo attacks. The spinning comes on suddenly, lasts 20 minutes to several hours, and is often severe enough to make you vomit. Between attacks you may feel fine, or you may have constant ear fullness, ringing, or hearing loss.

Meniere's disease is less common than BPPV but more disabling because attacks are unpredictable and can be severe. The cause of the fluid buildup is not fully understood—it may involve immune system problems, viral infection, or genetic factors. Diagnosis usually requires an audiogram (hearing test) and sometimes imaging to rule out other causes. Treatment focuses on managing symptoms during attacks and reducing attack frequency through diet changes (low salt), diuretics, or in some cases surgery.

Brain-based causes — stroke, multiple sclerosis, and other neurological problems

Vertigo can signal a problem in the brain itself rather than the inner ear. Stroke in the brainstem or cerebellum can cause vertigo, usually along with other symptoms like weakness on one side of the body, slurred speech, or difficulty walking. Multiple sclerosis can inflame the nerve pathways that process balance information. Tumors, head injuries, or migraine can also cause vertigo.

Brain-based vertigo is less common than inner ear causes but more serious. The key difference is that brain vertigo usually comes with other neurological signs—you don't just feel dizzy, you also notice weakness, numbness, vision problems, or loss of coordination. A doctor will order an MRI or CT scan if brain causes are suspected. The spinning may last longer than with inner ear problems and may not improve without treatment of the underlying condition.

Medication side effects and other triggers

Some medications can cause vertigo as a side effect. Aminoglycosides (a class of antibiotics), some blood pressure drugs, and seizure medications can damage the inner ear or affect balance signals. Alcohol and recreational drugs can also trigger vertigo by affecting fluid in the inner ear or disrupting brain signals.

Rapid changes in blood pressure, dehydration, or low blood sugar can make you feel dizzy or lightheaded, though this is technically different from true vertigo (the room spinning). Anxiety and panic attacks can also cause dizziness that feels like vertigo. A doctor can review your medications and medical history to determine whether a drug or other factor is responsible.

How doctors figure out what's causing your vertigo

Your doctor will start by asking when the spinning started, how long it lasts, whether it's triggered by head movement, and what other symptoms you have. They'll perform physical tests—the Dix-Hallpike maneuver for BPPV, or tests to check eye movement and coordination. They may check your hearing and blood pressure.

If the cause is not clear from these tests, your doctor may order an MRI to look for stroke or other brain problems, a CT scan to check for inner ear damage, or an audiogram to measure hearing loss. Blood tests can rule out infection or autoimmune disease. In most cases, the history and physical exam are enough to identify the cause and start treatment.

Frequently Asked Questions

Can vertigo be a sign of something serious like a stroke?

Vertigo alone is usually not a sign of stroke, but it can be if you also have weakness, numbness, slurred speech, or difficulty walking. If you have vertigo plus any of these other symptoms, seek emergency care. Most vertigo is from the inner ear and is not dangerous, but a doctor needs to rule out brain causes.

Why does vertigo get worse when I move my head?

If head movement triggers or worsens vertigo, BPPV is likely the cause. The loose crystals in your inner ear shift when you move, sending false balance signals. This is why people with BPPV often find relief by holding their head still. Other causes like vestibular neuritis usually cause constant spinning that doesn't depend on head position.

Can vertigo go away on its own?

Yes, many causes of vertigo improve without treatment. BPPV often resolves within weeks as the crystals settle. Vestibular neuritis and labyrinthitis usually improve over days to weeks as inflammation settles. Your brain also adapts to balance signals over time. However, some causes like Meniere's disease need treatment to reduce attack frequency.

Is vertigo the same as dizziness?

No. Vertigo is the specific sensation that you or the room is spinning. Dizziness is a broader term that includes lightheadedness, unsteadiness, or a floating feeling. Vertigo has a clear cause in your balance system, while dizziness can come from low blood pressure, dehydration, anxiety, or many other things. A doctor needs to know which one you're experiencing.

What should I do if vertigo starts suddenly?

Sit or lie down immediately to prevent falls. If the spinning is severe or comes with weakness, numbness, slurred speech, or vision changes, call emergency services. If it's mild and you have no other symptoms, rest and avoid sudden head movements. See a doctor within a few days to identify the cause, even if the spinning stops.