Vestibular neuritis is an inner ear condition that causes sudden, intense vertigo when the nerve responsible for balance becomes inflamed. It develops over several hours, peaks within 24 to 48 hours, and typically resolves on its own within days to a few weeks. The condition does not affect hearing, which is the key feature that separates it from a related condition called labyrinthitis.
What Causes Vestibular Neuritis
The exact cause isn’t fully established, but the leading theory points to a viral infection or reactivation of a dormant virus. Herpes simplex virus type 1 (the same virus behind cold sores) is the primary suspect. Researchers have found HSV-1 DNA in the vestibular ganglion, the nerve cluster that relays balance signals from the inner ear to the brain, and patients with vestibular neuritis show higher rates of prior HSV-1 exposure.
Other viruses have also been linked to the condition, including varicella-zoster (the chickenpox/shingles virus), Epstein-Barr virus, cytomegalovirus, influenza A and B, adenoviruses, and parainfluenza virus. In many cases, the episode follows an upper respiratory infection by a week or two, though it can also appear without any obvious viral illness beforehand.
What It Feels Like
The hallmark symptom is severe rotational vertigo, the sensation that the room is spinning around you. This comes on suddenly, often over a few hours, and brings intense nausea and vomiting with it. Most people also experience significant balance problems and find it difficult to walk or even stand without support during the worst of it.
Another characteristic sign is nystagmus, an involuntary rhythmic movement of the eyes. With vestibular neuritis, the eyes drift slowly toward the affected ear and then snap back. This eye movement is always in one direction regardless of where you look, and it gets more noticeable when you gaze toward the unaffected side. You may not be aware of your own nystagmus, but it’s one of the first things a clinician will look for.
Hearing remains completely normal because the cochlea (the hearing part of the inner ear) is not involved. If you’re experiencing vertigo along with hearing loss or ringing in the ear, that points to labyrinthitis or another condition rather than vestibular neuritis.
How It’s Diagnosed
There’s no blood test or scan that definitively confirms vestibular neuritis. Diagnosis is largely clinical, based on your symptoms and a set of bedside eye and head movement tests.
The most important of these is the HINTS exam, a three-step evaluation that checks head impulse response, nystagmus patterns, and vertical eye alignment (test of skew). In trained hands, this bedside exam is actually more sensitive than early MRI for distinguishing a harmless inner ear problem from a stroke in the brainstem, which can look very similar. A study published in Stroke found the HINTS exam was 100% sensitive and 96% specific for identifying a central cause like stroke. This matters because sudden vertigo, nausea, and balance problems are also warning signs of a posterior circulation stroke, and telling the two apart quickly can be lifesaving.
In vestibular neuritis, the head impulse test will be abnormal (your eyes can’t stay locked on a target when your head is turned quickly toward the affected side), the nystagmus beats in one fixed direction, and there’s no vertical misalignment of the eyes. If any of those three findings go the other way, further imaging is warranted.
A caloric test is sometimes used to confirm reduced function on one side. Warm water or air is delivered into the ear canal while you lie with your head elevated at 30 degrees. In a healthy ear, this triggers nystagmus; in vestibular neuritis, the response on the affected side is diminished. A difference of 25% or more between ears is considered significant.
Treatment During the Acute Phase
The first priority is controlling the vertigo, nausea, and vomiting that dominate the first couple of days. Medications that suppress the vestibular system, including antihistamines and benzodiazepines, can provide relief during this window. Anti-nausea medications are also commonly used. These drugs are only recommended for the first two to three days because prolonged use actually interferes with the brain’s ability to compensate for the damaged nerve.
A short course of oral steroids, started within 72 hours of symptom onset, may modestly speed vestibular recovery. The typical regimen is a five-day course that’s then gradually tapered over the following week or so. Not all clinicians prescribe steroids for vestibular neuritis, and the benefit is considered modest rather than dramatic.
Recovery and Vestibular Rehabilitation
Vestibular neuritis is a self-limiting condition. The severe vertigo and nystagmus usually fade within two to three days, and most people can handle basic daily activities within one to two weeks. Full recovery, however, depends on a process called vestibular compensation, where the brain learns to rely more on the healthy ear and other sensory inputs to maintain balance. This can take weeks to months, and some people notice lingering unsteadiness or dizziness with quick head movements for a while.
Vestibular rehabilitation therapy (VRT) is the most effective way to speed this compensation. It involves specific exercises that challenge your balance system in a controlled, progressive way. A typical program includes three main categories:
- Gaze stabilization exercises: You fix your eyes on a target while moving your head horizontally, vertically, and diagonally. This retrains the connection between head movement and eye focus. Progressions involve moving the target and your head in opposite directions simultaneously.
- Postural stability exercises: Standing with feet together, eyes open and then closed, for increasing durations. Over time, the surface gets more challenging (soft foam, uneven ground) and head movements are added.
- Walking exercises: Daily walks of about 30 minutes, gradually made harder by increasing speed, walking on uneven surfaces, navigating crowded spaces, or performing a mental task (like counting backwards) while walking.
An older but still widely used approach called Cawthorne-Cooksey exercises follows a progression from lying down to sitting, standing, and walking, incorporating eye tracking, head turns, ball tossing, and eventually stair climbing. These can be done at home and don’t require special equipment. The key with any VRT program is consistency. Doing the exercises several times a day, even when they temporarily increase dizziness, is what drives the brain to adapt.
Long-Term Outlook
Most people recover well from vestibular neuritis. The acute episode rarely lasts more than a few weeks, and with rehabilitation, the brain compensates effectively for the lost input from the affected nerve. Recurrence is uncommon, making this quite different from conditions like Ménière’s disease or benign paroxysmal positional vertigo (BPPV), which tend to come back. Some people do retain a measurable reduction in vestibular function on the affected side even after symptoms resolve, but the brain’s compensation typically makes this unnoticeable in everyday life.