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Pet
Seizure
Hub
Understanding Pet Seizures
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Key Takeaways
Investigation helps identify the underlying cause and guide treatment
Blood work and urinalysis are often the first step in seizure evaluation
MRI & CSF analysis may be recommended
Early veterinary investagation is important
A complete workup helps veterinarians rule out treatable causes of seizures (extracranial or intracranial disease) before diagnosing idiopathic epilepsy. The exact tests recommended may vary based on your pet's age, history, and physical and neurologic examination.
Baseline Blood Work
Blood tests are usually the first step in investigating seizures. They help assess overall organ
function and identify systemic issues that may trigger seizures.
Common tests include:
Urinalysis
A urinalysis may be performed to evaluate kidney function and look for evidence of infections, toxins or metabolic disorders that could contribute to seizures.
Electrolytes
Thyroid testing (as indicated)
Complete blood count (CBC)
Biochemistry panel
Advanced Imaging: MRI
Magnetic Resonance Imaging (MRI) provides detailed images of the brain and is the most advanced imaging modality available. An MRI can help identify structural abnormalities such as:
Brain tumors
Inflammation of the brain
Trauma or head injury
Congenital abnormality
Strokes
Infection
Other structural disease
An MRI is performed under general anesthesia. Your veterinarian will discuss whether MRI is recommended for investigating your pet's seizures.
Cerebrospinal Fluide (CSF) Analysis
A CSF tap (spinal tap) collects a small sample of fluid around the brain and spinal cord. This test helps detect inflammation, bleeding, or other abnormalities that may not always be visible on imaging.
CSF analysis is often performed at the same time as an MRI.
Other Tests (As Indicated)
Additional tests may be recommended based on your pet's history and findings. These can include tick-borne disease testing, bile acid stimulation testing, ammonia levels or tests for infectious diseases.
A Thorough Investigation Matters
Many conditions cause seizures, and some are treatable. A thorough diagnostic workup helps your veterinarian rule out underlying diseases and determine if your pet's seizures are due to idiopathic epilepsy. This information is essential for creating an effective treatment plan.
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