Vertigo can be brought on by dozens of triggers, from tiny calcium crystals shifting inside your ear to something as simple as not drinking enough water. About 8% of adults will experience vestibular vertigo at some point in their lives, and the proportion of cases rises steadily with age. Understanding what sets off that spinning sensation helps you identify patterns and, in many cases, reduce how often it happens.
BPPV: The Most Common Cause
Benign paroxysmal positional vertigo, or BPPV, is behind more vertigo episodes than any other single condition. Inside your inner ear, tiny calcium crystals sit on a sensory organ called the utricle, where they help you detect gravity and linear movement. Sometimes these crystals break loose and drift into the semicircular canals, the fluid-filled tubes that sense head rotation. Once there, the loose crystals cause the fluid to slosh around when you move your head, sending false signals to your brain that the room is spinning.
BPPV episodes are brief, usually lasting less than a minute, and are triggered by specific head movements: rolling over in bed, tilting your head back to look up, or bending forward. A head injury can knock crystals free, but in many cases there’s no obvious cause. The condition is more common after age 50 and tends to recur.
Inner Ear Infections and Inflammation
Viral infections can inflame the vestibular nerve, which carries balance signals from your inner ear to your brain. This condition, called vestibular neuritis, typically causes sudden, severe vertigo that lasts about a week before gradually improving over the following weeks or months. When the infection also affects hearing (causing ringing or muffled sound on one side), it’s called labyrinthitis.
The viruses responsible are often ones you’ve already encountered: the flu, cold sores (herpes simplex), COVID-19, measles, and mumps have all been linked to vestibular nerve inflammation. Sometimes the vertigo appears during the infection itself. Other times it shows up days or weeks later, after the original illness seems to have cleared. Upper respiratory infections are a particularly common precursor, even mild ones.
Ménière’s Disease
Ménière’s disease produces episodes of vertigo that last 20 minutes to several hours, often accompanied by hearing loss, ringing in the affected ear, and a feeling of fullness or pressure. The underlying problem is a buildup of excess fluid in the inner ear’s membranous labyrinth. As that fluid swells, it puts pressure on the structures responsible for both hearing and balance. Because the pressure can affect different parts of the inner ear unpredictably, symptoms vary from one episode to the next.
High sodium intake is a well-known trigger for Ménière’s flare-ups because sodium affects fluid retention throughout your body, including in the inner ear. Stress, fatigue, and changes in barometric pressure can also provoke episodes.
Vestibular Migraine
Migraine doesn’t just cause headaches. Vestibular migraine produces moderate to severe vertigo episodes lasting anywhere from five minutes to three days. At least half of those episodes come with classic migraine features: a one-sided, pulsating headache that gets worse with physical activity, sensitivity to light and sound, or visual aura. But some episodes bring vertigo without any headache at all, which makes them easy to mistake for an inner ear problem.
People with vestibular migraine often have identifiable food triggers. Aged cheeses, chocolate, red wine, beer, MSG (often listed as “natural flavors” on labels), caffeine, and citrus fruits are among the most frequently reported. Hormonal changes, poor sleep, and stress can also set off an episode, which is why vestibular migraine is more common in women, particularly around menopause.
Dietary and Lifestyle Triggers
Even without a diagnosed vestibular condition, certain habits can provoke or worsen vertigo. A diet high in sugar, caffeine, or alcohol can impair your balance system and increase dizziness. Dehydration is another straightforward trigger: when your fluid levels drop, it affects the delicate fluid balance in your inner ear and can lower blood pressure, both of which contribute to that spinning feeling.
Nicotine, recreational drugs, and foods high in tyramine or histamine (think fermented foods, cured meats, and certain wines) round out the list of common dietary culprits. If you notice vertigo after specific meals or drinks, keeping a food diary for a few weeks can help you spot the pattern.
Physical and Environmental Triggers
Repetitive or extreme head movements are a frequent trigger, especially for people with BPPV or other vestibular conditions. Tipping your head back to change a light bulb, looking up at shelves, or rapid side-to-side movements can all provoke an episode. Neck pain and stiffness are associated with vertigo as well, possibly because the brain uses input from neck muscles to help calibrate your sense of position.
Altitude changes and shifts in barometric pressure affect inner ear pressure directly. Some people notice vertigo during flights, mountain drives, or before storms. Head and neck injuries, including concussion, can trigger positional vertigo that persists for weeks or months after the initial trauma. Even jaw problems (TMJ dysfunction) can contribute, since the temporomandibular joint sits close to the ear canal and shares nerve pathways with the inner ear.
Fatigue, sleep deprivation, extreme exertion, stress, and anxiety all lower the threshold for vertigo episodes. These don’t damage the vestibular system, but they reduce your brain’s ability to compensate for minor balance disruptions that it would normally handle without you noticing.
Medications That Affect Balance
Certain medications can damage the sensory cells inside your inner ear that help you hear and maintain balance, a problem called ototoxicity. The most commonly implicated drug classes are aminoglycoside antibiotics (used for serious bacterial infections) and platinum-based chemotherapy drugs. Loop diuretics, which help your kidneys flush excess fluid, can also be ototoxic, particularly at high doses or when combined with other ototoxic drugs.
Even aspirin, one of the most common over-the-counter medications, can cause vertigo and ringing in the ears at higher doses. If vertigo starts or worsens after beginning a new medication, that timing is worth flagging to your prescriber.
Central Causes: Brain-Related Vertigo
Most vertigo originates in the inner ear (peripheral vertigo), but a smaller percentage stems from problems in the brain itself (central vertigo). Stroke, traumatic brain injury, multiple sclerosis, and brain tumors such as acoustic neuromas can all produce vertigo by disrupting the brain’s balance-processing centers.
Central vertigo tends to feel different. It’s usually more severe, with pronounced instability and difficulty walking, and it often doesn’t respond to the head-position changes that relieve BPPV. It also tends to come with other neurological symptoms: slurred speech, double vision, numbness, or difficulty coordinating movements. Any vertigo accompanied by these symptoms warrants urgent medical evaluation, because some central causes, particularly stroke, are time-sensitive emergencies.
Why Vertigo Gets More Common With Age
Among adults aged 18 to 39, vestibular issues account for about 14% of dizziness complaints. That figure doubles to 28% for people between 40 and 59, and reaches 37% in those 60 and older. The inner ear’s calcium crystals degrade over time, making BPPV more likely. Blood flow to the inner ear and brain can decrease with age. And the accumulation of medications, many of which carry ototoxic potential, adds another layer of risk. If you’re over 50 and experiencing new vertigo, the silver lining is that the most common cause, BPPV, is also one of the most treatable, often resolving with a simple series of guided head movements performed in a clinical setting.