CONDITION

Vestibular Disease

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

Purpose: To assess vestibular function and determine whether signs indicate peripheral or central disease
Considerations: Specific findings help localise the lesion. Central disease often shows additional neurological deficits beyond balance disturbance.

Ear examination

Purpose: To check for middle or inner ear infection contributing to vestibular signs
Considerations: Otoscopy assesses the ear canal and tympanic membrane. Middle ear disease is a common cause of peripheral vestibular dysfunction.

Blood tests

Purpose: To assess general health and check for conditions that might affect the vestibular system
Considerations: Baseline health assessment and thyroid testing in dogs may be performed.

Advanced imaging (CT or MRI)

Purpose: To visualise the inner ear, brainstem, and surrounding structures
Considerations: Typically reserved for cases suggesting central disease, those not improving as expected, or when ear infection is suspected but not visible.

Cerebrospinal fluid analysis

Purpose: To assess for inflammatory or infectious causes affecting the brain
Considerations: Considered when central vestibular disease is suspected and advanced imaging findings warrant further investigation.

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

Misconception:

"Vestibular disease means my pet has had a stroke"

Reality:

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.

Misconception:

"Animals with vestibular disease will not recover"

Reality:

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.

Misconception:

"Vestibular disease only happens once"

Reality:

Some animals experience recurrent episodes of idiopathic vestibular disease, though this is less common. Episodes are typically self-limiting.

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