A Guide for Pet Owners
Epilepsy is one of the most common neurological conditions diagnosed in companion animals. It can be frightening to witness your pet have a seizure, but understanding what epilepsy is, how it is managed, and what you can do at home will help you feel more confident and better prepared to support your dog or cat.
What Is Epilepsy?
Epilepsy is a brain disorder characterized by repeated, unprovoked seizures. A seizure occurs when there is a sudden burst of abnormal electrical activity in the brain. This disrupts normal brain function and causes temporary changes in behavior, movement, or awareness.
A single seizure does not mean a pet has epilepsy. Veterinarians typically diagnose epilepsy only when a pet has experienced two or more unprovoked seizures separated in time.
Types of Epilepsy
Idiopathic Epilepsy
Idiopathic epilepsy is the most common form in dogs, particularly in certain breeds. It has no identifiable underlying structural cause. Genetic factors are believed to play a significant role. Breeds with higher rates of idiopathic epilepsy include Border Collies, Labrador Retrievers, Belgian Tervurens, German Shepherds, and Beagles.
Structural Epilepsy
Structural epilepsy, sometimes called secondary epilepsy, results from a visible or identifiable cause within the brain itself. Brain tumors, inflammatory disease, strokes, and head trauma can all lead to structural epilepsy. This form can affect both dogs and cats.
Reactive Seizures
Reactive seizures are not classified as true epilepsy. They occur as a response to an underlying metabolic or toxic problem outside the brain, such as low blood sugar, liver disease, toxin ingestion, or kidney failure. Treating the root cause usually resolves the seizures.
Epilepsy in Cats
Epilepsy is less common in cats than in dogs, but it does occur. Cats are more likely than dogs to have an identifiable underlying cause for their seizures, such as inflammatory brain disease, a brain tumor, or a metabolic disorder. Idiopathic epilepsy does occur in cats but is less frequently diagnosed.
Seizures in cats may look different than those in dogs. Cats sometimes show more subtle signs, such as facial twitching, excessive drooling, or brief periods of confusion. It is important not to assume a quiet or unusual episode is nothing of concern.
Recognizing a Seizure
Seizures can look very different from one animal to the next. They are generally grouped into two broad categories.
Generalized Seizures
Generalized seizures affect the entire brain and usually the entire body. The most dramatic type is the tonic or clonic seizure, often called a grand mal seizure, in which the animal loses consciousness, falls on its side, and experiences muscle rigidity or rhythmic paddling of the limbs. The pet may also urinate or defecate involuntarily.
Focal Seizures
Focal seizures originate in one area of the brain and may affect only part of the body. Signs can include facial twitching, repetitive blinking, chewing movements, or rhythmic movement of one limb. Focal seizures can progress into generalized seizures.
| The Three Phases of a Seizure Pre-ictal phase: The period before a seizure, sometimes called the aura. Your pet may appear restless, anxious, clingy, or dazed. Ictal phase: The seizure itself. This usually lasts from a few seconds to a few minutes. Post-ictal phase: The recovery period after the seizure ends. Your pet may seem confused, disoriented, temporarily blind, or unusually tired. This phase can last from minutes to hours. |
When to Call the Veterinarian
Not every seizure is an immediate emergency, but certain situations require urgent veterinary attention. Contact your veterinarian or an emergency clinic right away if any of the following occur:
- A seizure lasts longer than five minutes (this is called status epilepticus and can be life threatening). The pet’s temperature can rise to dangerous levels due to the constant muscle tremors.
- Your pet has more than two or three seizures within a 24-hour period (cluster seizures).
- Your pet does not recover to near normal within 30 minutes of the seizure ending.
- This is your pet’s first seizure ever.
- Your pet is injured during a seizure.
What to Do During a Seizure
Watching a pet have a seizure is stressful. Staying calm and knowing what to do will help you protect your pet and provide useful information to your veterinarian.
- Stay calm. Most seizures end on their own within one to two minutes.
- Do not restrain your pet or put your hands near the mouth. Animals are not able to swallow their tongues, and a seizing animal may bite unintentionally.
- Move nearby objects away to prevent injury.
- If possible, place something soft under your pet’s head.
- Keep the environment quiet and dim the lights if you can.
- Note the time the seizure begins so you can report its duration to your vet.
- Video the seizure on your phone if it is safe to do so. This footage is extremely helpful for your veterinarian.
Diagnosis
There is no single test that confirms epilepsy. Your veterinarian will take a thorough history, perform a physical and neurological examination, and run a series of tests to rule out other causes of seizures.
Common initial tests include blood and urine panels to assess organ function, blood sugar levels, and other metabolic parameters. Depending on the findings, your veterinarian may refer you to a veterinary neurologist for advanced imaging such as an MRI scan or a cerebrospinal fluid analysis to look for structural or inflammatory causes.
Idiopathic epilepsy is typically a diagnosis of exclusion, meaning other causes have been ruled out.
Treatment Options
Not every pet with epilepsy requires medication. The decision to start antiseizure treatment is based on several factors, including the frequency and severity of seizures, the pet’s recovery, and any identified underlying cause.
Antiseizure Medications
The goal of medication is not always complete elimination of seizures, but rather a significant reduction in their frequency and severity with minimal side effects. Common medications used in dogs include phenobarbital and potassium bromide. Levetiracetam is frequently used in both dogs and cats and is often favored in cats because it is generally well tolerated.
Medication must be given consistently and on schedule. Skipping doses or suddenly stopping treatment can trigger severe seizures. Never adjust your pet’s medication without first speaking to your veterinarian. A common side effect of anti-convulsants is sedation the first 2-3 weeks. This typically subsides as their body gets used to the medicine. Protective blood levels can take a few weeks or so depending on the medication so there may be some seizure activity during this period but the seizures are usually milder.
Monitoring and Follow Up
Pets on antiseizure medication require regular blood testing to monitor drug levels and assess organ health. This is especially important for phenobarbital, which is processed by the liver. Your veterinarian will schedule periodic check ups and may adjust dosages over time based on seizure control and test results.
Living with an Epileptic Pet
Many pets with epilepsy live full, happy, and active lives with appropriate management. There are several practical steps you can take at home to support your pet.
Keep a Seizure Diary
Recording the date, time, duration, and appearance of each seizure helps your veterinarian track patterns and assess whether medication is working. Many pet owners find a simple notebook or a phone note works well for this purpose.
Maintain a Consistent Routine
Stress and disruptions to routine can sometimes influence seizure activity. Try to keep feeding times, exercise schedules, and sleeping arrangements consistent.
Avoid Known Triggers
Some pets appear to have identifiable triggers such as extreme heat, flashing lights, or marked physical stress. While not every animal has clear triggers, staying observant and noting circumstances around each seizure may reveal patterns over time.
Medication Safety at Home
Store medications safely and away from children and other animals. Keep a small supply of emergency medication (such as diazepam or midazolam to be given rectally) if your veterinarian has prescribed one for use at home during prolonged seizures.
Talking to Your Veterinarian
Open communication with your veterinary team is one of the most important parts of managing epilepsy. Do not hesitate to reach out if you notice a change in seizure pattern, if your pet seems unwell between seizures, or if you have concerns about side effects from medication.
Ask your veterinarian whether a referral to a veterinary neurologist would be appropriate for your pet. Neurologists have specialized training in seizure disorders and access to advanced diagnostic and treatment options.
| Key Takeaways for Pet Owners Epilepsy is manageable. Many pets with epilepsy lead comfortable, fulfilling lives. Early and accurate diagnosis matters. Work with your vet to identify the cause. Consistent medication is essential. Never skip doses or stop treatment abruptly. Keep a seizure diary. Detailed records help your vet fine tune your pet’s care. Know when to seek emergency help. Status epilepticus is a medical emergency. You are not alone. Your veterinary team is your partner in your pet’s care. |
This article is intended for general informational purposes only and does not replace professional veterinary advice. If you have concerns about your pet’s health, please consult a licensed veterinarian.
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