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.
Symptoms typically appear suddenly, often reaching maximum severity within the first 24 hours. The acute phase can be quite distressing, with affected animals unable to stand or walk normally. Improvement usually begins within a few days, with many dogs and cats returning to near-normal function within two to three weeks. 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.
Later signals
Circling
Some animals walk in circles, typically toward 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 one 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. May cause sedation. 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"
Whilst strokes can cause vestibular signs in animals, the vast majority of sudden vestibular episodes in older dogs are idiopathic vestibular disease, which has a generally favourable prognosis.
"Animals with vestibular disease will not recover"
Most dogs and cats with peripheral vestibular disease show significant improvement within days and substantial recovery within weeks. Some residual head tilt may persist but rarely affects quality of life.
"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, 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 Cats
Hypothyroidism in cats is uncommon, but peripheral vestibular disease has been reported in association with severe, prolonged thyroid hormone deficiency. The mechanism remains uncertain, and thyroid function may be explored as part of the workup when vestibular signs appear in the context of other metabolic abnormalities.
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: 24 April 2026 · Dr Alastair Greenway MRCVS