Ataxia is the medical term for incoordination or loss of balance in dogs. It is not a disease on its own but a neurological sign — a signal that something is disrupting how the brain, spinal cord, or inner ear is communicating with the rest of the body. Identifying what type of ataxia a dog is showing can help narrow down the underlying cause and guide the urgency of care.
What Is Ataxia in Dogs?
According to VCA Animal Hospitals¹, ataxia results from abnormal neurological input — meaning the brain, spinal cord, or inner ear is not sending or receiving signals correctly, causing the body’s movements to become disorganized. The most common visible sign is an unsteady, staggering gait, but the specific pattern of incoordination varies depending on which part of the nervous system is affected.
Ataxia is not painful in most cases, though the underlying cause may be. Dogs experiencing ataxia may appear drunk, confused, or unable to navigate familiar spaces.
The Three Types of Ataxia in Dogs
Cerebellar Ataxia
The cerebellum coordinates movement and fine-tunes motor activity. When damaged, dogs don’t lose the ability to move — but movements become poorly regulated and excessive.
Distinguishing features:
Exaggerated, high-stepping gait (goose-stepping)
Wide-based stance with legs planted further apart than normal
Intention tremor — trembling of the head or limbs that worsens when the dog is trying to reach a target (such as a food bowl), then eases when at rest
No head tilt in most cases
Causes of cerebellar ataxia include cerebellar hypoplasia (underdevelopment, often congenital), infections, inflammatory diseases, stroke, and tumors.
Vestibular Ataxia
The vestibular system — located in the inner ear and brainstem — controls balance and spatial orientation. Vestibular ataxia is among the most commonly encountered types, particularly in older dogs.
Distinguishing features:
Head tilt to one side
Nystagmus — involuntary, rhythmic back-and-forth or rotational eye movements
Falling, rolling, or leaning toward one side
Circling, often in the direction of the head tilt - Nausea and vomiting are common due to vertigo
Causes include inner ear infections (otitis media/interna), idiopathic vestibular disease (see below), brainstem tumors, hypothyroidism, and trauma.
Proprioceptive (Sensory) Ataxia
Proprioceptive ataxia results from damage to the spinal cord or, less commonly, the brainstem. Proprioception is the body’s awareness of limb position — when this signal is disrupted, dogs lose the ability to know where their paws are relative to the ground.
Distinguishing features:
Knuckling — walking on the tops of the paws instead of the pads
Paw dragging or crossing of limbs
Hindquarter weakness or wobbling
Stumbling when turning or navigating uneven surfaces
Causes include intervertebral disc disease (IVDD), spinal cord tumors, degenerative myelopathy, and trauma.
Old Dog Vestibular Syndrome
Idiopathic vestibular disease — commonly called old dog vestibular syndrome — is one of the most important conditions for dog owners to know about. It causes sudden, severe vestibular ataxia that can look identical to a stroke: a dog may fall over, be unable to stand, have rapid eye movements, and appear distressed.
Despite this alarming presentation, idiopathic vestibular disease is not a stroke. Symptoms are typically worst in the first 24–48 hours, begin to visibly improve by 72 hours, and largely resolve within one to two weeks. Most dogs recover fully, though some may retain a permanent mild head tilt.
Because the diagnosis can only be confirmed by ruling out other causes — inner ear infection, stroke, tumor — a veterinary examination is always warranted. Dogs that are elderly and experience sudden severe vestibular signs should be evaluated promptly, particularly if symptoms are not improving within the expected window.
Common Causes of Ataxia in Dogs
Ataxia has a wide range of underlying causes. The most frequently encountered include:
Inner ear infection (otitis media/interna)
Idiopathic vestibular disease
Intervertebral disc disease (IVDD)
Brain or spinal cord tumors
Degenerative myelopathy
Stroke or vascular event
Toxin exposure (metronidazole toxicity, marijuana, certain pesticides)
Inflammatory or infectious brain disease (meningitis, encephalitis)
Hypothyroidism
Head trauma
Nutritional deficiencies (thiamine)
Diagnosing Ataxia in Dogs
Because ataxia is a sign rather than a specific disease, diagnosis requires identifying the underlying cause. The diagnostic workup depends on the type of ataxia and the dog’s history and clinical presentation.
Standard initial workup:
Complete physical and neurological examination — the neurological exam helps identify which part of the nervous system is affected
Blood work and urinalysis — to rule out metabolic causes such as hypothyroidism
Otoscopic ear examination — to assess for ear infection as a cause of vestibular ataxia
Advanced diagnostics:
Cervical and thoracic spinal radiographs — for proprioceptive ataxia - CT scan — for structural assessment of the brain or spine
MRI — provides higher-resolution imaging of the brain and spinal cord; often required for definitive diagnosis
Cerebrospinal fluid (CSF) analysis — performed under general anesthesia to assess for infection or inflammation in the central nervous system
Treatment
Treatment is directed at the underlying cause rather than ataxia itself.
Underlying Cause | Common Treatment Approach |
|---|---|
Inner ear infection | Antibiotics and antifungals |
Idiopathic vestibular disease | Supportive care; anti-nausea medications; resolves naturally |
IVDD | Anti-inflammatories; surgery for severe cases |
Inflammatory brain disease | Immunosuppressive medications (corticosteroids or other) |
Tumor | Surgery, chemotherapy, radiation, or palliative care |
Toxin ingestion | Decontamination and supportive care |
Stroke | Supportive care; address underlying cardiovascular or metabolic factors |
Regardless of cause, most dogs benefit from supportive management during the acute phase: a safe environment free of stairs and obstacles, anti-nausea medications if vertigo is present, and close monitoring for changes in symptoms.
When to Seek Emergency Care
Seek emergency veterinary care immediately if your dog:
Suddenly cannot stand, walk, or hold their head upright
Is circling, rolling, or falling repeatedly
Has seizures or loss of consciousness accompanying the incoordination
Shows rapidly worsening symptoms rather than gradual stabilization
Has pale, white, or bluish gums along with ataxia
Knowing when a situation requires emergency veterinary evaluation is especially important with ataxia — while some causes may resolve quickly, others can represent true neurological emergencies where prompt diagnosis can affect the outcome.
Given that ataxia often requires advanced diagnostics, specialist referral, or hospitalization, understanding what pet insurance covers before a neurological emergency occurs can help reduce financial stress in a difficult situation. Because ataxia most commonly affects older dogs, reviewing coverage options for senior pets can be particularly worthwhile.
Unexpected vet bills can happen when you least expect them, but pet insurance may help make those costs more manageable. Having coverage in place can help pet parents feel more prepared for emergency care, surgery, diagnostics, and treatment for covered conditions.
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VCA Animal Hospitals. “Ataxia in Dogs.” https://vcahospitals.com/know-your-pet/ataxia-in-dogs
American Veterinary Medical Association (AVMA). “Pet Care: Neurological and Behavioral Health.”
The information presented in this article is for educational and informational purposes only and does not constitute or substitute for the advice of your veterinarian.
