Dog Seizures: Causes, Symptoms, and Treatment Options
This article is reviewed for clinical accuracy. Always consult your veterinarian for diagnosis and treatment.
Key Takeaways
- A seizure is an episode of abnormal, uncontrolled electrical activity in the brain; it is a symptom of underlying disease, not a diagnosis in itself, and identifying the cause determines the correct long-term treatment.
- Epilepsy is the most common neurological disorder in dogs, affecting an estimated 0.6 to 0.75 percent of the canine population; idiopathic (genetic) epilepsy has no identifiable structural or metabolic cause and is managed with lifelong anticonvulsant medication.
- A seizure lasting more than 5 minutes (status epilepticus) or two or more seizures within a 24-hour period without recovery between them is a neurological emergency that causes permanent brain damage and can be fatal without immediate treatment.
- The most important thing an owner can do during a seizure is stay calm, keep the dog away from stairs and hard surfaces, do not restrain the dog, and do not put anything in the dog’s mouth; dogs cannot swallow their tongue during a seizure.
- Diagnosis requires blood work, urinalysis, and ideally MRI and cerebrospinal fluid (CSF) analysis to rule out structural brain disease, toxins, and metabolic causes before concluding that epilepsy is idiopathic.
- First-line anticonvulsants in dogs are phenobarbital and potassium bromide (KBr); newer options including levetiracetam (Keppra), zonisamide, and imepitoin provide additional control with different side effect profiles.
You were in the kitchen when it started. A thump from the living room, then the sound of your dog’s legs scrabbling against the floor. By the time you got there, all four legs were paddling, the jaw was clamping rhythmically, and the eyes were staring ahead at nothing. It lasted maybe a minute and a half. Then it was over. Your dog lay still, breathing hard, confused, and unresponsive to your voice. The following two hours of disorientation (the postictal phase) were somehow more frightening than the seizure itself. If this has happened to your dog, or you are reading this to understand what to do if it ever does, this guide covers everything you need to know.
What Happens in the Brain During a Seizure
The brain communicates through electrical signals passing between neurons. Normally, excitatory and inhibitory signals are balanced; a seizure occurs when this balance breaks down and a group of neurons fires in an abnormal, synchronized, and self-sustaining burst. This aberrant electrical activity spreads across nearby brain tissue, recruiting more neurons into the cascade. The result is the involuntary motor, sensory, autonomic, or behavioral manifestations owners observe as a seizure.
The key neurotransmitters involved are glutamate (excitatory, drives the seizure) and gamma-aminobutyric acid (GABA, inhibitory, normally suppresses the seizure). Most anticonvulsant drugs work by enhancing GABA activity, reducing glutamate activity, or stabilizing neuronal membranes to raise the threshold for abnormal firing. Phenobarbital enhances GABA-A receptor activity. Potassium bromide competes with chloride at GABA-A receptors, increasing inhibitory chloride channel opening. Levetiracetam binds to synaptic vesicle protein SV2A, reducing neurotransmitter release. Zonisamide blocks voltage-gated sodium and calcium channels.
After a seizure, the affected brain areas are metabolically exhausted: ATP (cellular energy) has been consumed, excitatory neurotransmitters are temporarily depleted, and inhibitory signals are surging to suppress further firing. This metabolic recovery phase is the postictal period, during which the dog appears disoriented, blind, ataxic (wobbly), restless, or deeply lethargic. The postictal phase typically lasts 10 minutes to several hours; longer or more severe postictal periods generally correlate with more severe seizures.
Types of Seizures in Dogs
Generalized Tonic-Clonic Seizures (Grand Mal)
The most recognizable seizure type. All four limbs are involved; the dog loses consciousness. The tonic phase (rigid extension of the limbs, possible jaw clamping) is followed by the clonic phase (rhythmic paddling or jerking movements of the limbs). Salivation, urination, and defecation are common. Duration is typically 1 to 3 minutes. Most owners find grand mal seizures the most frightening to witness, but a typical isolated grand mal seizure that resolves within 5 minutes is not dangerous in itself.
Focal (Partial) Seizures
Focal seizures originate in a specific area of one hemisphere and produce localized signs. A dog may show rhythmic twitching of one limb or one side of the face, repetitive blinking, jaw chomping, fly-biting behavior (snapping at invisible flies), sudden behavioral changes (aggression, fear, confusion), or localized sensory disturbances. Focal seizures may evolve into generalized seizures (focal to bilateral tonic-clonic). Focal seizures are more likely than generalized seizures to indicate a structural brain lesion (tumor, stroke, encephalitis) and warrant MRI evaluation.
Absence Seizures
Characterized by brief episodes of staring, unresponsiveness, or behavioral arrest without significant motor activity. Rare and often underrecognized in dogs. The dog appears to briefly “check out” and then resume normal activity. Differentiation from normal inattentiveness requires video documentation and electroencephalogram (EEG).
Myoclonic Seizures
Sudden, brief muscle jerks, often bilateral and symmetrical. May involve the limbs, face, or trunk. Associated with juvenile myoclonic epilepsy in certain breeds (Rhodesian Ridgeback). Can be subtle and mistaken for startle responses.
Causes of Seizures in Dogs
| Category | Cause | Typical Age of Onset | Key Diagnostic Finding |
|---|---|---|---|
| Idiopathic epilepsy | Genetic predisposition; no structural or metabolic cause found | 1 to 5 years | Normal MRI, normal CSF, normal bloodwork |
| Structural (intracranial) | Brain tumor (meningioma, glioma), granulomatous meningoencephalitis (GME), necrotizing encephalitis, stroke, hydrocephalus, trauma | Over 5 years (tumor); any age (GME, trauma) | Abnormal MRI; abnormal CSF in inflammatory disease |
| Metabolic (extracranial) | Hypoglycemia, hepatic encephalopathy (portosystemic shunt or liver failure), hyponatremia, hypocalcemia, hyperosmolarity, polycythemia | Any age; young dogs (portosystemic shunt, hypoglycemia) | Abnormal bloodwork; bile acids elevated in hepatic disease |
| Toxin-induced | Xylitol, organophosphates, metaldehyde (slug bait), mycotoxins (moldy food), marijuana (THC), permethrin (in cats but also dogs), certain mushrooms, lead, strychnine | Any age; often acute onset | History of exposure; toxicology screening |
| Infectious | Canine distemper virus (CDV), Neospora caninum, Toxoplasma gondii, Cryptococcus neoformans, bacterial meningoencephalitis | Young unvaccinated (CDV); any age (others) | CSF analysis; serology; PCR |
| Vascular | Ischemic stroke (cerebrovascular accident), hemorrhagic stroke | Middle-aged to senior | MRI (diffusion-weighted imaging shows infarct) |
Breed Predispositions for Idiopathic Epilepsy
Idiopathic epilepsy has a strong genetic component. Breeds with documented high prevalence include the Belgian Shepherd (Tervuren), Labrador Retriever, Golden Retriever, Border Collie, German Shepherd, Standard Poodle, Beagle, Irish Setter, Dachshund, Keeshond, and English Springer Spaniel. In Belgian Shepherds, prevalence studies have found rates as high as 9 percent. Genetic testing panels for epilepsy-associated mutations are available for some breeds, including the Labrador Retriever (ADAM23 gene variant associated with benign familial juvenile epilepsy) and the Belgian Shepherd (LGI2 variant).
The Four Phases of a Seizure
| Phase | Duration | What the Dog Does | What to Do |
|---|---|---|---|
| Prodrome (aura) | Minutes to hours before | Restlessness, seeking owner, anxiety, hiding; not all dogs show a recognizable aura | Note the time; move the dog to a safe open floor area away from stairs |
| Ictus (seizure) | Typically 1 to 3 minutes | Loss of consciousness, paddling, jaw chomping, salivation, urination, defecation | Stay calm; time the seizure; keep dog away from hard surfaces; do NOT restrain; do NOT put anything in mouth |
| Postictal | 10 minutes to several hours | Disorientation, temporary blindness, pacing, restlessness, excessive thirst, deep sleep, or hypersalivation | Keep dog in a quiet, safe, confined area; offer water; keep other pets away; call vet |
| Interictal | Between seizures | Normal behavior in most dogs with idiopathic epilepsy between episodes | Document seizure frequency and character; administer prescribed medications consistently |
What to Do During Your Dog’s Seizure
During the Seizure
- Start timing immediately. Knowing whether the seizure lasted 45 seconds or 4 minutes is clinically important. Use your phone.
- Stay calm and stay nearby. Your dog is unconscious and unaware of distress, but your calm presence after the seizure helps with recovery.
- Clear the area. Move furniture, sharp edges, and other pets away from the dog. If the dog is near stairs, gently slide them away from the edge using a blanket or towel under the body; avoid direct physical restraint.
- Do not put anything in the dog’s mouth. Dogs cannot swallow their tongue during a seizure. Reaching into a seizing dog’s mouth risks a severe bite from involuntary jaw clamping.
- Do not restrain the dog. Holding down a seizing dog does not stop the seizure and may cause injury to the dog or to you.
- If available and prescribed by your vet, administer rescue medication (diazepam rectal gel, intranasal midazolam, or levetiracetam) if the seizure reaches 3 to 5 minutes.
- If the seizure exceeds 5 minutes, go to an emergency vet immediately with the dog still seizing if necessary; do not wait for it to stop.
After the Seizure
- Keep the dog in a quiet, darkened room; light and noise can trigger cluster seizures in some dogs
- Offer water once the dog is sufficiently recovered to swallow safely (usually 10 to 15 minutes after ictus)
- Record: time of onset, duration of ictus, what phase features you observed, postictal duration and character
- Contact your veterinarian even if it was the first seizure; an appointment within 24 to 48 hours is appropriate for a first seizure that resolved normally
How Veterinarians Diagnose Seizures
Blood Work and Urinalysis
A complete blood count, chemistry panel, electrolytes, bile acids (fasting and 2-hour post-prandial), and urinalysis are the starting point for any first seizure workup. These tests rule out the major metabolic causes: hypoglycemia, hyponatremia, hypocalcemia, liver disease (elevated bile acids, elevated ammonia, low BUN and albumin in severe hepatic failure), polycythemia, and kidney disease. In a young dog (under 1 year) with seizures, a portosystemic shunt must be excluded.
MRI of the Brain
MRI is the gold standard for evaluating intracranial disease. It is indicated in any dog with: first seizure onset over age 5, focal seizures of any type, abnormal neurological exam between seizures, seizures not controlled by appropriate medication, or any suspicion of structural disease from history or examination. MRI can identify brain tumors, inflammatory lesions (GME, necrotizing encephalitis), vascular events (stroke), hydrocephalus, and cortical malformations. CT scan is a lower-sensitivity alternative when MRI is not available; it is adequate for detecting large tumors and hemorrhage but misses many inflammatory and small lesions.
Cerebrospinal Fluid Analysis
CSF is obtained by lumbar or cisternal puncture under anesthesia, immediately after MRI. It detects inflammatory cell populations (pleocytosis indicates encephalitis), infectious organisms, elevated protein (suggests inflammation or blood-brain barrier disruption), and provides material for culture, cytology, and PCR testing for viral and protozoal pathogens. CSF analysis is essential for diagnosing GME, necrotizing encephalitis, cryptococcosis, and infectious encephalitis.
Diagnosis of Idiopathic Epilepsy
Idiopathic epilepsy is a diagnosis of exclusion: it is concluded when all other causes have been ruled out. The International Veterinary Epilepsy Task Force (IVETF) defines a three-tier confidence classification. Tier I (low confidence): characteristic age of onset (1 to 5 years), breed predisposition, normal inter-ictal neurological exam, normal bloodwork and urinalysis. Tier II (medium confidence): tier I criteria plus normal MRI. Tier III (high confidence): tier II plus normal CSF analysis.
Anticonvulsant Medications for Dogs
| Drug | Mechanism | Starting Dose | Monitoring | Key Side Effects |
|---|---|---|---|---|
| Phenobarbital | GABA-A enhancer; most widely used first-line drug | 2.5 to 3 mg/kg twice daily, titrated to serum level 20 to 40 mcg/mL | Serum levels at 2 weeks, then every 6 months; liver enzymes every 6 months | Sedation initially, polyphagia, polydipsia, polyuria; hepatotoxicity with long-term use |
| Potassium Bromide (KBr) | Hyperpolarizes neurons via chloride channels | 30 to 40 mg/kg once daily (dog); loading dose possible | Serum bromide levels at 3 months, then every 6 to 12 months; target 1,000 to 2,000 mg/L (monotherapy) | Sedation, ataxia, polyphagia, polydipsia; pancreatitis risk (see Dog Pancreatitis) |
| Levetiracetam (Keppra) | Binds SV2A synaptic vesicle protein | 20 mg/kg three times daily (standard); extended-release 30 to 60 mg/kg twice daily | No serum level monitoring required; recheck every 6 to 12 months | Sedation, behavioral changes (agitation in some dogs); generally well tolerated |
| Zonisamide | Sodium and calcium channel blocker | 5 to 10 mg/kg once to twice daily | Serum levels may be checked; hepatic monitoring | Sedation, ataxia, anorexia; rare idiosyncratic hepatotoxicity |
| Imepitoin (Pexion) | Partial GABA-A agonist; low-affinity benzodiazepine site | 10 to 30 mg/kg twice daily | Clinical response monitoring; no serum level | Polyphagia, sedation; generally mild side effect profile; not available in all countries |
| Diazepam (rectal/intranasal) | GABA-A enhancer; rapid-acting benzodiazepine | 0.5 to 1 mg/kg rectally or 0.2 to 0.5 mg/kg intranasally as rescue dose | Home rescue medication only; not for chronic daily use in dogs (tolerance develops rapidly) | Sedation, ataxia; rectal absorption variable; intranasal midazolam preferred by many neurologists |
Status Epilepticus: The Neurological Emergency
Status epilepticus (SE) is defined as a single seizure lasting 5 or more minutes, or two or more seizures within a 24-hour period without full recovery of consciousness between them. It is a life-threatening emergency. Continuous seizure activity causes: hyperthermia (body temperature rises rapidly from muscle activity, reaching 106 to 107 degrees Fahrenheit in severe cases, causing brain and multiorgan damage), hypoxia (inadequate oxygenation of the brain during prolonged seizure), metabolic acidosis, rhabdomyolysis (muscle breakdown), hypoglycemia (from massive glucose consumption), and direct excitotoxic neuronal death from uncontrolled glutamate release.
Emergency treatment of SE follows a stepwise protocol: IV diazepam or midazolam as initial rescue, repeated at 5-minute intervals if the first dose fails; if SE continues after two doses, IV phenobarbital loading; if still refractory, propofol or ketamine infusion under intensive monitoring. Concurrent management includes IV fluids, temperature management, blood glucose monitoring, and supplemental oxygen.
Red Flags: When Dog Seizures Require Emergency Care
- A seizure that does not stop within 5 minutes; do not wait for resolution at home, go to an emergency clinic immediately
- Two or more seizures within a 24-hour period without full return to normal consciousness between them (cluster seizures)
- A seizure in a dog that is currently not on any anticonvulsant medication and has never had a seizure before; the first seizure requires veterinary workup even if it self-resolves
- A seizure occurring within hours of known ingestion of a toxin (xylitol, slug bait, insecticide); toxin-induced seizures can progress rapidly and require specific antidotes
- A seizure in a dog under 1 year old; metabolic causes including portosystemic shunt and hypoglycemia are more common in young dogs and require prompt diagnosis
- A body temperature above 104 degrees Fahrenheit (40 degrees Celsius) during or after the seizure; hyperthermia during a prolonged seizure causes irreversible brain damage and requires emergency cooling
- A dog on anticonvulsants whose seizures are suddenly increasing in frequency or severity; medication failure, dose adjustment, or medication interactions require immediate veterinary evaluation
US Cost Overview for Seizure Diagnosis and Management
| Service | Typical US Cost |
|---|---|
| Emergency exam (during or after seizure) | $150 to $300 |
| CBC + chemistry + bile acids + urinalysis | $200 to $450 |
| MRI brain (under anesthesia) | $1,500 to $3,500 |
| CSF analysis | $300 to $700 (often done same session as MRI) |
| Neurologist consultation | $250 to $500 |
| Phenobarbital (monthly cost) | $15 to $40 |
| Potassium bromide (monthly cost) | $10 to $30 |
| Levetiracetam (monthly cost) | $40 to $120 |
| Phenobarbital serum level monitoring | $40 to $100 per test |
| Status epilepticus emergency hospitalization | $1,500 to $5,000 |
Age-Specific Considerations
Puppies (Under 1 Year)
- Seizures in puppies under 6 months almost always have a metabolic or structural cause; idiopathic epilepsy rarely presents this young
- Portosystemic shunts (abnormal blood vessel bypassing the liver) cause hepatic encephalopathy with neurological signs including seizures; any puppy with stunted growth, post-meal seizures, or salivation after eating needs bile acids testing
- Hypoglycemia is common in toy breed puppies and can cause seizures; a glucose check is among the first steps in any seizing puppy evaluation
- Canine distemper virus causes seizures in young unvaccinated dogs; acute onset with respiratory and GI signs preceding neurological involvement
- Storage diseases (lysosomal storage disorders) are hereditary enzyme deficiencies causing progressive neurological deterioration from a young age; affected breeds include the Cairn Terrier (globoid cell leukodystrophy), English Springer Spaniel, and Portuguese Water Dog
Adult Dogs (1 to 7 Years)
- Idiopathic epilepsy is the most likely diagnosis for a first seizure in a healthy 1-to-5-year-old dog of a predisposed breed with normal bloodwork
- The decision to start anticonvulsant medication after a first seizure depends on seizure frequency, severity, and recovery; many neurologists recommend starting medication after the second seizure or if cluster seizures or status epilepticus occurred on the first episode
- Granulomatous meningoencephalitis (GME) and necrotizing encephalitis most commonly affect young to middle-aged small breed dogs (Pug, Maltese, Yorkshire Terrier, Pomeranian, French Bulldog); MRI and CSF are essential for diagnosis
- Toxin exposure (xylitol, organophosphates, rodenticides) should be considered in any adult dog with acute-onset seizures and no prior history
- Consistent anticonvulsant administration is essential; missing doses is a common trigger for breakthrough seizures and cluster episodes
Senior Dogs (8+ Years)
- A first seizure in a dog over 5 years has a much higher likelihood of structural brain disease (tumor, stroke, inflammatory disease) than in a younger dog; MRI is strongly recommended rather than empirically starting anticonvulsants
- Brain tumors, particularly meningiomas and gliomas, are more common in older dogs; Boxers, Boston Terriers, and Golden Retrievers have elevated rates of brain neoplasia
- Cerebrovascular accidents (stroke) are increasingly recognized in senior dogs with hypertension (from Cushing’s disease, chronic kidney disease, or hypothyroidism), coagulation disorders, or cardiac disease; MRI shows characteristic lesions
- Phenobarbital use in senior dogs requires more frequent liver enzyme monitoring; baseline liver values before starting and every 6 months during treatment are important, as hepatotoxicity risk increases with age and long-term use
- Cognitive dysfunction syndrome (CDS), the canine equivalent of dementia, can produce behavioral changes that owners describe as seizure-like; video documentation helps distinguish true seizures from CDS episodes
Myths and Facts About Dog Seizures
You should put your hand or a spoon in your dog’s mouth during a seizure to prevent choking or tongue swallowing.
Dogs cannot swallow their tongue during a seizure. The tongue is attached at the base to the hyoid apparatus and cannot fall back to obstruct the airway. Placing any object in the mouth of a seizing dog puts you at serious risk of a severe bite from the involuntary, powerful jaw clamping of tonic-clonic seizures. Emergency physicians commonly treat hand injuries from well-meaning owners who attempted this. Keep your hands away from the dog’s mouth. If the dog is making gurgling sounds, gently tilt the body slightly to one side (log-roll, keeping the head and neck in line) to allow saliva to drain from the mouth, without putting your hands near the jaws.
Once a dog starts anticonvulsant medication, they will need to take it for the rest of their life and can never come off it.
While many dogs with idiopathic epilepsy do require lifelong anticonvulsant therapy, some dogs achieve seizure freedom and are eventually tapered off medication after an extended seizure-free period (typically 1 to 2 years). The decision to attempt withdrawal is made by the veterinary neurologist based on seizure history, current medication, and MRI findings. Withdrawal must always be gradual and supervised; abrupt discontinuation of phenobarbital or benzodiazepines can trigger severe rebound seizures or status epilepticus. The key message is that medication management decisions are individualized, not predetermined, and should involve a veterinary neurologist for dogs with difficult-to-control epilepsy.
A single brief seizure that resolves on its own is not serious and does not need veterinary attention.
A first seizure in a dog always warrants veterinary evaluation, even if it self-resolves quickly. A seizure is a symptom of underlying brain dysfunction; the cause may be a treatable metabolic problem, a toxin exposure requiring specific antidote, an infectious process, or an early brain tumor. Without evaluation, these causes cannot be excluded. In addition, a dog that has had one seizure is statistically more likely to have additional seizures, some of which may be more severe. Veterinary evaluation after a first seizure is not alarmist; it is the appropriate response to a neurological event that may signal a treatable underlying condition.
Frequently Asked Questions About Dog Seizures
My dog just had their first seizure. What should I do right now?
Stay calm, note the current time, and let the seizure run its course without restraining the dog or putting anything in the mouth. Clear the immediate area of hard edges and keep other pets away. Time the seizure from start to finish. If the seizure exceeds 5 minutes, go to an emergency veterinary clinic immediately with the dog still seizing if necessary. If the seizure resolves within 5 minutes, keep the dog in a quiet safe space during the postictal period, offer water when fully alert, and contact your veterinarian to schedule an appointment within 24 to 48 hours. A first seizure always warrants workup even when it self-resolves.
How often do dogs with epilepsy have seizures?
Seizure frequency in dogs with idiopathic epilepsy varies enormously between individuals. Some dogs have one or two seizures per year, while others have monthly or even more frequent episodes without medication. The goal of anticonvulsant therapy is not necessarily complete seizure elimination but rather reducing seizure frequency to a level that preserves quality of life for both the dog and the owner. Most neurologists define acceptable seizure control as reducing seizure frequency by at least 50 percent and maintaining seizures at no more than 1 per month, without status epilepticus or cluster events. Many well-managed dogs have far fewer seizures than this.
Can diet affect seizures in dogs?
There is growing evidence that a medium-chain triglyceride (MCT) enriched ketogenic diet may reduce seizure frequency in some dogs with drug-resistant epilepsy. MCTs are converted to ketone bodies in the liver, which the brain can use as an alternative energy source; ketones may have anticonvulsant effects by altering neuronal excitability and neurotransmitter metabolism. A clinical trial published in the British Journal of Nutrition found that dogs on an MCT-supplemented diet had significantly fewer seizures than dogs on a control diet. Royal Canin Veterinary Diet Neurological and Hill’s Prescription Diet j/d contain elevated MCT levels specifically for this purpose. This approach is adjunctive rather than a replacement for anticonvulsant medication in most dogs.
Is epilepsy in dogs inherited? Should I breed an epileptic dog?
Idiopathic epilepsy in many breeds has a strong genetic basis; breeding epileptic dogs is generally discouraged by veterinary neurologists and breed health organizations because it propagates the genetic risk to offspring. The genetics of epilepsy are complex (polygenic in most breeds), meaning affected offspring may not be predictable by simple pedigree analysis. Genetic tests for specific epilepsy-associated mutations exist for some breeds (Labrador Retriever, Belgian Shepherd, Beagle, Miniature Schnauzer) and allow identification of carriers before clinical signs appear. Dogs with confirmed idiopathic epilepsy, their parents, and their siblings should ideally not be used in breeding programs.
My dog is on phenobarbital and their liver enzymes are elevated. Should I stop the medication?
Elevated liver enzymes (ALP and ALT) are common and expected in dogs on phenobarbital; the drug induces liver enzymes as a direct pharmacological effect, and mild to moderate elevations do not necessarily indicate liver damage. The critical distinction is between enzyme induction (expected, generally benign) and true hepatotoxicity (progressive, potentially serious). True phenobarbital-induced hepatotoxicity is characterized by clinical signs of liver failure (jaundice, ascites, bleeding disorders, encephalopathy), greatly elevated liver enzymes (10 or more times normal), and abnormal liver function tests (bile acids, albumin, coagulation). Mild to moderate enzyme elevations without these signs typically require monitoring rather than immediate medication change. Never stop phenobarbital abruptly; do so only with veterinary guidance and only after an alternative anticonvulsant is at therapeutic levels.
What is a rescue medication and does my dog need one?
A rescue medication is a fast-acting anticonvulsant given at home to stop or shorten a breakthrough seizure or to prevent cluster seizures from progressing to status epilepticus. The most commonly prescribed rescue medications are diazepam rectal gel (administered rectally using a syringe), intranasal midazolam (a more reliable and faster-acting alternative), and oral levetiracetam (used in some protocols for cluster prevention). Rescue medication is recommended for dogs with a history of cluster seizures or prolonged seizures, dogs that live more than 30 minutes from an emergency clinic, and dogs whose owners have demonstrated the ability to administer it calmly during a seizure event. Your veterinarian or neurologist will prescribe and teach the administration technique; rescue medications should not be used without specific instruction.
Can a dog die from a seizure?
A typical brief grand mal seizure that self-resolves within 3 to 4 minutes is not directly fatal. However, status epilepticus (seizure exceeding 5 minutes or cluster seizures without recovery) can cause death or permanent brain damage through hyperthermia, metabolic collapse, and excitotoxic neuronal death. A dog in status epilepticus has a mortality rate of 20 to 40 percent without aggressive emergency treatment. Additionally, dogs can sustain physical injuries during a seizure (falling down stairs, drowning if seized near a pool, blunt trauma) that are independently life-threatening. This is why supervision and environmental safety measures (baby gates at stairs, no access to pools, padded sleeping areas) are important for dogs with known epilepsy.
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