Vertigo is a false sensation of movement, usually spinning or rotating, when you’re actually standing still. It’s not a disease itself but a symptom of something going wrong in the balance system that connects your inner ear to your brain. Dizziness and vertigo affect roughly 15% to 20% of adults each year, making it one of the most common reasons people visit a doctor.
People often use “dizzy” as a catch-all, but vertigo is distinct from lightheadedness or feeling faint. Lightheadedness typically comes from low blood pressure, low blood sugar, or dehydration, where the brain briefly isn’t getting enough of what it needs. Vertigo, by contrast, is a sensory mismatch: your brain receives conflicting signals about where your body is in space, and the result feels like the room is spinning around you or like you’re being pulled to one side.
How Your Balance System Works
Your inner ear contains a network of fluid-filled tubes called semicircular canals, oriented in three different planes. As your head moves, the fluid shifts and bends tiny hair-like sensors that relay position data to your brain. A nearby structure called the utricle holds small calcium carbonate crystals that help detect gravity and straight-line motion. Your brain cross-references all of this with input from your eyes and the pressure sensors in your joints and muscles. When any part of this system sends a bad signal, you experience vertigo.
BPPV: The Most Common Cause
Benign paroxysmal positional vertigo, or BPPV, accounts for a large share of vertigo cases. It happens when the tiny calcium crystals in your utricle break loose and drift into one of the semicircular canals where they don’t belong. Once trapped there, the crystals roll around every time you change head position, pushing on the hair-like sensors and sending false motion signals to your brain.
The crystals can come loose from aging, a head injury, or an inner ear infection. BPPV episodes are brief, usually lasting less than a minute, and are triggered by specific movements: rolling over in bed, tilting your head back, or looking up quickly. The spinning can be intense enough to cause nausea, but it stops once you hold your head still.
Diagnosis is straightforward. A provider guides you from a sitting position to lying down while turning your head 45 degrees to one side. If the displaced crystals shift during this movement, your eyes will make involuntary jerking movements called nystagmus, confirming BPPV and identifying which ear is affected. Treatment uses a similar approach: a series of guided head movements called the Epley maneuver repositions the crystals back where they belong. It resolves symptoms in about 8 out of 10 people, often in a single session.
Ménière’s Disease
Ménière’s disease produces vertigo episodes that are longer and more disruptive than BPPV, typically lasting anywhere from 20 minutes to 12 hours. The underlying problem is a buildup of fluid (called endolymph) inside the inner ear’s balance and hearing structures. This excess fluid disrupts the normal signals traveling between the ear and brain.
Unlike BPPV, Ménière’s disease affects hearing. A diagnosis requires at least two spontaneous vertigo episodes in the expected time range, documented hearing loss (particularly in low to mid-range frequencies), and fluctuating ear symptoms like ringing, muffled hearing, or a sensation of fullness in the affected ear. These symptoms come and go unpredictably, which can make the condition especially frustrating. Over time, hearing loss can become permanent in the affected ear.
Vestibular Neuritis and Labyrinthitis
Both of these conditions involve inflammation, usually triggered by a viral infection. The difference comes down to what’s inflamed and whether hearing is affected.
- Vestibular neuritis targets the nerve connecting the inner ear to the brain. It causes prolonged, severe vertigo that can last days but typically does not cause significant hearing loss.
- Labyrinthitis affects the inner ear’s balance and hearing organs directly. It causes the same prolonged vertigo plus hearing loss in the affected ear.
These conditions sometimes follow a cold or respiratory infection. In rare cases, they’ve been linked to shingles, Lyme disease, or other infections. The initial vertigo can be severe enough to keep you in bed, but it usually improves over days to weeks as the brain gradually compensates for the damaged input from one ear.
Vestibular Migraine
Migraine can cause vertigo even without a headache, which makes this cause easy to miss. Vestibular migraine episodes involve moderate to severe dizziness or spinning that lasts anywhere from five minutes to 72 hours. At least half of the episodes come with recognizable migraine features: one-sided pulsing head pain, sensitivity to light and sound, or visual aura.
Diagnosis requires a history of migraine (with or without aura) plus at least five episodes that meet the criteria above. Many people with vestibular migraine have had typical headache migraines for years before the vertigo episodes begin, though some experience both simultaneously. Treatment generally follows the same approach as other migraine types, focusing on avoiding known triggers and using preventive strategies.
When Vertigo Signals Something Serious
Most vertigo comes from inner ear problems that are uncomfortable but not dangerous. Rarely, vertigo is the first sign of a stroke in the back part of the brain. Isolated vertigo is actually the most common warning symptom before a stroke in the arteries supplying the brainstem and cerebellum, and it’s rarely identified correctly at first contact.
What makes this tricky is that a stroke-related vertigo episode can look identical to an ear problem. The spinning is real, head movement makes it worse, and fewer than 20% of these stroke patients have obvious neurological signs like facial drooping or limb weakness. Standard stroke screening scales can score a zero even when a posterior circulation stroke is happening. Even MRI misses 15% to 20% of these strokes in the first 24 hours.
Certain features should raise concern: sudden severe headache or neck pain, new hearing loss on one side, double vision, difficulty walking or coordinating movements, slurred speech, or numbness on one side of the body. Young adults are not exempt. Vertebral artery dissection, a tear in one of the arteries at the back of the neck, can mimic migraine closely, and patients aged 18 to 44 who have strokes are seven times more likely to be misdiagnosed than those over 75.
Managing Vertigo Day to Day
For acute episodes, anti-nausea and anti-motion-sickness medications can reduce the spinning sensation and the nausea that comes with it. These are meant for short-term relief during intense episodes, not for ongoing daily use, because they can slow down the brain’s natural ability to recalibrate its balance signals.
Long-term management depends on the cause. BPPV often resolves with repositioning maneuvers that you can eventually learn to do at home if it recurs. Ménière’s disease management typically involves reducing salt intake to limit fluid buildup, along with medications to manage acute attacks. Vestibular neuritis and labyrinthitis improve as inflammation resolves, but vestibular rehabilitation therapy (a set of specific exercises that train your brain to compensate for inner ear damage) can speed recovery significantly.
If you experience recurrent vertigo, keeping a log of episodes helps with diagnosis. Note how long each episode lasted, what triggered it, whether you had hearing changes or headache, and what position you were in when it started. The pattern often points directly to the cause: brief episodes triggered by head position suggest BPPV, longer episodes with hearing symptoms point toward Ménière’s, and episodes linked to migraine features suggest vestibular migraine.