Why Is My Dog Falling Over? Causes, Diagnosis, and Prevention

Why Is My Dog Falling Over? Causes, Diagnosis, and Prevention

Recurrent falling or loss of balance in dogs (ataxia) signals an underlying issue ranging from benign to life-threatening. Prompt veterinary evaluation is essential to identify the cause and initiate appropriate treatment.

Medical Causes

1. Vestibular Disease

• Peripheral (idiopathic/old dog vestibular syndrome): Sudden head tilt, nystagmus, circling, nausea. Common in seniors; often improves in days to weeks.
• Central (brainstem/cerebellar): Caused by stroke, tumor, infection, inflammation. More severe, progressive.

2. Ear Pathology

Otitis media/interna disrupts balance. Signs: head shaking, ear scratching, odor, discharge.

3. Neurological Disorders

• Epilepsy (post-ictal ataxia)
• Degenerative myelopathy (progressive hind-limb weakness, knuckling)
• Intervertebral disc disease (IVDD) – spinal cord compression
• Brain tumors, encephalitis, cerebellar hypoplasia

4. Musculoskeletal Conditions

• Osteoarthritis, hip/elbow dysplasia – pain-induced gait changes
• Cruciate ligament rupture, fractures, luxating patella
• Myopathies (e.g., polymyositis)

5. Systemic/Metabolic

• Hypoglycemia, hypothyroidism, electrolyte imbalances
• Toxin exposure (lead, marijuana, xylitol, certain medications)
• Anemia, cardiovascular disease (syncope vs. ataxia)

Environmental and Behavioral Factors

• Slippery floors (hardwood, tile) – add rugs, yoga mats, toe grips
• Clutter, stairs, uneven surfaces
• High furniture/jumping – use ramps/steps
• Startle responses (noise phobia, vision loss)
• Anxiety/fear – trembling, cowering, panic running

Age and Breed Considerations

• Puppies: immature coordination, cerebellar hypoplasia, hypoglycemia
• Seniors: cognitive dysfunction, sensory decline, arthritis, neoplasia
• Breed predispositions: Greyhounds/whippets (thin pads, high center of gravity); chondrodystrophic breeds (IVDD); large breeds (osteosarcoma, degenerative myelopathy)

Diagnostic Workup

1. Neurologic exam (cranial nerves, proprioception, reflexes)
2. Otoscopic exam ± cytology/culture
3. CBC, chemistry, urinalysis, thyroid, blood pressure
4. Imaging: radiographs, MRI/CT (gold standard for CNS)
5. CSF analysis, infectious titers, genetic testing if indicated

Management and Prevention

• Treat underlying condition (antibiotics, anti-inflammatories, surgery, chemotherapy)
• Physical rehabilitation (balance exercises, underwater treadmill, proprioceptive training)
• Home modifications: non-slip surfaces, ramps, night lights, raised bowls
• Assistive devices: harnesses (Help 'Em Up, GingerLead), boots, wheelchairs
• Anti-anxiety protocols if behavioral

Red flags for emergency care: sudden collapse, inability to rise, seizures, head trauma, toxin ingestion, pale gums, labored breathing. Do not wait—seek immediate veterinary attention.