The Main Causes of Vertigo

Vertigo happens when your brain receives conflicting signals about your body's position in space. This usually comes from a problem in your inner ear, your eyes, or the nerves connecting them to your brain. The spinning sensation feels real because your balance system is genuinely misfiring—not because you are anxious or imagining it.

The two broadest categories are peripheral vertigo, which originates in the inner ear, and central vertigo, which originates in the brain or brainstem. Peripheral causes account for about 80 percent of vertigo cases and are usually less serious. Central causes are less common but often require faster medical attention.

Key Takeaways

  • Benign paroxysmal positional vertigo (BPPV) is the most common cause and happens when calcium crystals in your inner ear shift position.
  • Vestibular neuritis and labyrinthitis are viral infections of the inner ear that cause sudden, severe spinning that can last days or weeks.
  • Ménière's disease causes vertigo along with hearing loss and ear fullness, and episodes can be unpredictable.
  • Central causes like stroke, multiple sclerosis, or brain tumors are less common but require immediate medical evaluation if you have other neurological symptoms.
  • Your doctor can usually identify the cause through a physical exam and specific balance tests, without needing imaging in most cases.

Benign Paroxysmal Positional Vertigo (BPPV)

BPPV is the single most common cause of vertigo. It happens when tiny calcium carbonate crystals (called otoliths) become dislodged inside the semicircular canals of your inner ear. When you move your head—turning over in bed, looking up, or bending down—these crystals shift and trigger false signals about movement.

The vertigo from BPPV is intense but brief, usually lasting seconds to a few minutes. It comes and goes with specific head movements and does not cause hearing loss or other symptoms. BPPV can happen after a head injury, but often it occurs for no clear reason. It is more common as you age and in people with osteoporosis.

A doctor can diagnose BPPV using the Dix-Hallpike maneuver, a simple test where they move your head into specific positions while watching your eyes. Treatment usually involves a series of head movements called the Epley maneuver, which repositions the crystals back into place. Many people recover after one or two sessions.

Vestibular Neuritis and Labyrinthitis

These are viral infections that inflame the nerves or structures in your inner ear. Vestibular neuritis affects the balance nerve; labyrinthitis affects both the balance and hearing parts of the inner ear. Both usually follow an upper respiratory infection and come on suddenly.

The vertigo is severe—you may not be able to walk or keep your eyes still—and it can last days or even weeks. Unlike BPPV, the spinning does not depend on head position; it is constant. Labyrinthitis may also cause hearing loss or tinnitus (ringing in the ear). There is no specific treatment, but the condition usually resolves on its own as the inflammation fades. Your doctor may prescribe medication to reduce nausea while you recover.

Ménière's Disease

Ménière's disease is a disorder of the inner ear that causes a buildup of fluid. Episodes of vertigo come without warning and can last hours. Unlike BPPV, the spinning is not triggered by head movement—it simply happens.

Ménière's disease also causes hearing loss (which may be temporary at first but can become permanent), tinnitus, and a feeling of fullness or pressure in the affected ear. Episodes are unpredictable, and the condition is chronic, meaning it persists over time. Treatment focuses on managing symptoms during attacks and reducing the frequency of episodes through diet changes, diuretics, or other medications. Some people eventually need surgery if symptoms become disabling.

Central Causes: Stroke, Tumors, and Neurological Conditions

Central vertigo originates in the brain or brainstem rather than the inner ear. The most serious central causes are stroke, brain tumors, and multiple sclerosis. Central vertigo is less common than peripheral vertigo but requires faster medical evaluation.

Warning signs that vertigo may be central include weakness or numbness on one side of your body, difficulty speaking or swallowing, severe headache, loss of consciousness, or inability to walk in a straight line. If you have any of these symptoms along with vertigo, seek emergency care immediately. Central vertigo often does not respond to positional changes the way BPPV does, and the spinning may be less intense but more persistent.

Other Causes: Medication, Migraine, and Trauma

Certain medications can trigger vertigo as a side effect, including some antibiotics, blood pressure drugs, and seizure medications. If vertigo started after you began a new medication, tell your doctor—switching to a different drug may resolve it.

Migraine-associated vertigo occurs in people with a history of migraines and can happen with or without a headache. Head trauma can cause vertigo that lasts weeks or months as the inner ear heals. Perilymph fistula, a rare condition where fluid leaks from the inner ear into the middle ear, usually follows head injury or sudden pressure changes (like from diving or heavy lifting).

How Doctors Identify the Cause

Your doctor will start with questions about when the vertigo began, what it feels like, what triggers it, and what other symptoms you have. They will perform balance tests and eye movement tests, including the Dix-Hallpike maneuver and the Romberg test (standing with eyes closed). These tests often reveal the cause without any imaging.

If your doctor suspects a central cause—based on your symptoms or test results—they will order an MRI or CT scan of your brain. If they suspect Ménière's disease, they may refer you to an ear, nose, and throat (ENT) specialist. Most peripheral vertigo cases are diagnosed through physical exam alone.

Frequently Asked Questions

Can vertigo be caused by anxiety or stress?

Anxiety can make vertigo worse or trigger dizziness, but it does not cause the spinning sensation of true vertigo. If your doctor has ruled out inner ear and neurological causes through physical exam and testing, anxiety-related dizziness is possible. However, do not assume vertigo is anxiety-related without a medical evaluation first.

Is vertigo always a sign of something serious?

No. BPPV, the most common cause, is not serious and usually resolves with treatment. Vestibular neuritis and labyrinthitis are uncomfortable but typically resolve on their own. Central causes like stroke are serious but account for only a small percentage of vertigo cases. A doctor can determine how urgent your situation is based on your symptoms and exam findings.

Can vertigo go away on its own?

Yes, many cases do. BPPV often improves with specific head movements or naturally over time. Vestibular neuritis and labyrinthitis usually resolve as the inflammation fades, though this can take weeks. Ménière's disease is chronic but episodes may become less frequent. Central causes require treatment and do not resolve without intervention.

What should I do if vertigo comes on suddenly?

If you have sudden vertigo with weakness, numbness, difficulty speaking, or severe headache, call emergency services. If vertigo is severe but you have no other warning signs, contact your doctor the same day or go to urgent care. Avoid driving or operating machinery until you have been evaluated.

Can vertigo be prevented?

BPPV cannot always be prevented, but treating osteoporosis and avoiding head injuries may reduce your risk. Vestibular neuritis and labyrinthitis follow viral infections, so standard infection prevention (handwashing, vaccination) may help. Ménière's disease cannot be prevented, but some people find that reducing salt intake or managing stress helps reduce episode frequency.