CONDITION
Vestibular Disease
Vestibular disease describes a disruption to the system that helps dogs and cats maintain balance, coordinate eye movements, and orient themselves in space. When this system is affected, animals may suddenly appear profoundly unsteady, as though the world has tilted beneath them. Owners often describe a head tilt, circling, loss of coordination, or eyes that flick rhythmically from side to side. The outward signs can look dramatic, but the underlying causes range widely. The vestibular system has components in both the inner ear and the brainstem, and problems can arise in either location. Some cases resolve on their own within days to weeks; others reflect conditions that require investigation and longer-term management. This page explores what vestibular signs may indicate, how the anatomy of balance works, what investigations can help clarify the picture, and the range of approaches used depending on what is found. The goal is to help you understand what you may be observing and what questions the clinical picture raises.
Why this matters now
Vestibular disease affects the balance system and is one of the most alarming presentations for owners to witness. The idiopathic (unknown cause) form is particularly common in older dogs, often called 'old dog vestibular disease'. Cats of any age can also be affected. The sudden onset of symptoms often leads owners to fear a stroke or serious neurological event.
Signs typically appear suddenly and are often most severe in the first 24 to 48 hours. The acute phase can be quite distressing, with affected animals unable to stand or walk normally. In idiopathic cases, improvement usually begins within about 72 hours, with many dogs and cats returning to near-normal function within two to three weeks. An animal that does not improve, or gets worse, may have a more serious underlying disorder. Some animals retain a mild permanent head tilt, whilst others recover completely.
Signals & patterns
Early signals
Sudden head tilt
The head tilts noticeably to one side and the animal may struggle to hold it level.
Loss of balance
Affected animals stumble, lean, or fall to one side, often unable to walk in a straight line.
Nystagmus
The eyes move rhythmically back and forth, often horizontally, indicating vestibular disturbance.
Reluctance to move
Animals may freeze or refuse to walk, appearing frightened by the disorientation.
Signs that point to the brain
Dullness or reduced responsiveness, weakness or poor foot placement in the legs, nystagmus that moves up and down, or nystagmus that changes direction as the head position changes are features of central (brainstem) disease rather than an inner ear problem. Whether the cause lies in the inner ear or the brainstem cannot be judged at home.
Later signals
Circling
Some animals walk in circles, typically towards the side of the head tilt.
Nausea and vomiting
Motion sickness from the vestibular disturbance can cause drooling, lip-licking, and vomiting.
Rolling
Severely affected animals may roll repeatedly, unable to right themselves.
Gradual adaptation
Over days, animals typically begin compensating, showing progressive improvement.
Click to read about the biological mechanisms
How this is usually investigated
Assessment focuses on differentiating peripheral from central vestibular disease and identifying any underlying cause when possible.
Neurological examination
Ear examination
Blood tests
Advanced imaging (CT or MRI)
Cerebrospinal fluid analysis
Options & trade-offs
Management depends on the underlying cause. Idiopathic vestibular disease often improves with supportive care alone.
Supportive care
Providing a safe environment, assistance with mobility, and ensuring adequate food and water intake.
Trade-offs: Appropriate for idiopathic cases. Animals may need help eating and drinking initially. Recovery typically occurs over two to three weeks.
Anti-nausea medication
Medications to reduce motion sickness and nausea caused by vestibular dysfunction.
Trade-offs: Helps with comfort during the acute phase. Some of these medicines can cause drowsiness. Usually needed for only the first few days.
Treatment of ear infection
Antibiotics and other medications when middle or inner ear infection is identified.
Trade-offs: Addresses an underlying cause when present. May require prolonged treatment. Some infections can be challenging to resolve.
Physical support
Harness support, padded environment, and assistance with movement.
Trade-offs: Prevents injury during the acute phase. Most animals gradually regain their balance with time.
Investigation and treatment of central disease
Advanced diagnostics and targeted treatment when central vestibular disease is suspected.
Trade-offs: Necessary when signs suggest brainstem involvement. Treatment depends on the underlying cause identified.
Common misconceptions
"Vestibular disease means my pet has had a stroke"
Strokes can cause vestibular signs in animals, but idiopathic vestibular disease is the most common diagnosis in dogs with sudden peripheral vestibular signs, and older dogs are most often affected. It generally carries a favourable prognosis.
"Animals with vestibular disease will not recover"
Most dogs and cats with idiopathic vestibular disease begin to improve within about 72 hours and recover substantially within two to three weeks. Some keep a lasting head tilt. Recovery from other causes depends on what is found.
"Vestibular disease only happens once"
Some animals experience recurrent episodes of idiopathic vestibular disease, though this is less common. Episodes are typically self-limiting.
Related conditions
Otitis Interna
Otitis interna describes inflammation within the inner ear, the site of the peripheral vestibular apparatus. When infection or inflammation reaches this region, the resulting vestibular signs (head tilt, loss of balance and nystagmus) can be indistinguishable from other causes of vestibular disease, and investigation often focuses on distinguishing ear-related causes from those arising in the brainstem.
Otitis Media
Otitis media involves inflammation in the middle ear, which sits adjacent to the inner ear structures responsible for balance. In some cases, middle-ear disease can extend deeper to affect the vestibular apparatus, and signs of vestibular dysfunction may appear alongside other indicators of ear infection.
Brain Tumours
Brain tumours can produce vestibular signs when they develop in or compress the brainstem or cerebellum, regions that house central components of the balance system. The onset may be gradual rather than sudden, and other neurological changes often accompany the loss of coordination, helping to distinguish central from peripheral vestibular patterns.
Facial Nerve Paralysis
Facial nerve paralysis can occur alongside vestibular signs when disease affects structures deep within the skull where the facial and vestibulocochlear nerves run in close proximity. A dog or cat presenting with both a head tilt and asymmetry of the face may prompt investigation into conditions affecting this shared anatomical region.
Hypothyroidism in Dogs
Hypothyroidism has been associated with dysfunction of the facial and vestibulocochlear nerves in adult dogs, so thyroid testing may form part of the workup when a head tilt appears alongside facial nerve weakness.
Creating a safe space where the animal cannot fall or injure itself helps during the acute phase. Noting the direction of head tilt and nystagmus can help with veterinary assessment. Observing appetite, drinking, and toileting behaviour indicates whether supportive care needs are being met. Tracking improvement over days helps assess recovery progress.
Last reviewed: 9 October 2026 · Dr Alastair Greenway MRCVS