Understanding What Can Trigger a Seizure in a Dog and Managing Epilepsy

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Posted Nov 5, 2024

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Dogs with epilepsy can experience seizures triggered by various factors. Stress is a known seizure trigger, with common causes including changes in environment, loud noises, and separation anxiety.

Some dogs may be more prone to seizures during certain times of the day. Research suggests that seizures often occur in the morning or early afternoon, possibly due to the natural fluctuations in cortisol levels.

A dog's diet can also play a role in seizure triggers. Some owners have reported that their dogs experience seizures after consuming certain foods, such as onions, garlic, or grapes.

Causes of Seizures

Dogs can experience seizures due to a variety of underlying causes, including faulty electrical activity in the brain, which leads to a loss of control over their body.

Some common causes of seizures in dogs include epilepsy, heat exhaustion, nutritional imbalances such as thiamine deficiency, low blood sugar levels, liver disease, and tumors. Ingested poisons like caffeine and chocolate, as well as injuries to the head, such as road accidents, can also trigger seizures.

Credit: youtube.com, Seizures in Dogs - Causes, Diagnosis and Treatment | Southeast Veterinary Neurology

Additionally, physical factors like fatigue, exhaustion from strenuous exercise, illness, and infections can lower the seizure threshold in dogs. Hormonal changes, such as those that occur during estrus or pregnancy, and fluctuations in body temperature can also contribute to seizures.

Here are some underlying medical conditions and infections that can predispose dogs to seizures:

  • Liver disease
  • Kidney disease
  • Diabetes Mellitus
  • Tumors/cancer
  • Sepsis
  • Cushing's disease
  • Addison's disease
  • Hypothyroidism
  • Canine distemper
  • Canine parvovirus
  • Tick-borne diseases
  • Meningitis/Encephalitis
  • Severe respiratory or heart disease leading to low oxygen concentrations to the brain

Physical Factors

Physical factors can play a significant role in lowering a dog's seizure threshold. Fatigue is a common trigger, and dogs that are exhausted from strenuous exercise are more likely to have a seizure.

Exhaustion from physical activity can be a major contributor to seizures in dogs. This is because their bodies are already under stress, making them more susceptible to other triggers.

Illness, such as urinary tract infections or ear infections, can also increase the risk of seizures. Hormonal changes, like those experienced during estrus or pregnancy, can have a similar effect.

Fluctuations in body temperature can also lower a dog's seizure threshold. This can be especially true for dogs that are prone to overheating or have trouble regulating their body temperature.

Here are some common physical factors that can contribute to seizures in dogs:

  1. Fatigue
  2. Exhaustion from strenuous exercise
  3. Illness (such as urinary tract infections or ear infections)
  4. Hormonal changes (such as during estrus or pregnancy)
  5. Fluctuations in body temperature

Sensory Stimuli

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Sensory stimuli can be a major trigger for seizures in some dogs with epilepsy. Flashing or flickering lights can be particularly problematic, as they can cause photosensitive epilepsy in some dogs.

Some common examples of visual stimuli that can trigger seizures include flashing lights, intense visual patterns like strobe lights or flickering television screens.

Loud noises can also be a trigger for seizures in some dogs. This can include fireworks, thunderstorms, or any other sudden, intense sound.

Repetitive noises can also be a problem for some dogs. This can include sounds like a ringing phone or a repetitive beeping noise.

Here are some common sensory stimuli that can trigger seizures in dogs:

  1. Flashing/flickering lights
  2. Intense visual patterns (such as strobe lights or flickering television screens)
  3. Loud noises (such as fireworks or thunderstorms)
  4. Repetitive noises

Dietary Factors

Dietary Factors play a significant role in triggering seizures in some dogs with epilepsy. Certain ingredients and feeding patterns can have a profound impact on their health.

A change in feed or feed pattern can be a common trigger for seizures in dogs. This can be due to the introduction of new ingredients or a change in the frequency of meals.

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Chocolate ingestion is a well-known seizure trigger for dogs. Even small amounts of chocolate can cause a seizure in some cases.

Caffeine ingestion can also trigger seizures in dogs. This is because caffeine can affect the brain's electrical activity, leading to seizures.

Artificial colourings, preservatives, and flavourings can also be seizure triggers for dogs. These ingredients are often found in processed dog foods.

An allergic reaction to a certain food can cause seizures in dogs. This is because the body's immune system overreacts to the food, leading to inflammation and seizures.

Inadequate nutrition can result in low blood sugar levels, which can trigger seizures in dogs. This is especially true if the dog is not eating regularly.

Irregular meal times can also lead to low blood sugar levels, which can trigger seizures in dogs. This is because the body needs a steady supply of energy to function properly.

Here are some common dietary factors that can trigger seizures in dogs:

  1. Change in feed or feed pattern
  2. Chocolate ingestion
  3. Caffeine ingestion
  4. Artificial colourings
  5. Preservatives
  6. Flavourings
  7. Allergic reaction to a certain food
  8. Inadequate nutrition resulting in low blood sugar levels
  9. Irregular meal times resulting in low blood sugar levels

Hormonal Changes

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Dogs may experience increased seizure frequency due to natural hormonal fluctuations. These fluctuations can be quite unpredictable, but understanding them can help you better manage your furry friend's condition.

One of the main hormonal changes that can trigger seizures is the oestrus cycle in intact female dogs. This is a natural process where the female dog's body prepares for reproduction.

Intact male dogs can also experience hormonal changes that may lead to seizures. Specifically, changes in testosterone levels can play a role.

Some of the key factors to keep in mind when it comes to hormonal changes and seizures in dogs include:

By being aware of these hormonal changes, you can take steps to help minimize the risk of seizures in your dog.

Genetic Predisposition

Genetic Predisposition plays a significant role in seizures in dogs. Certain breeds are more prone to epilepsy, which can lead to seizures.

Beagles, for example, are one of the breeds that have a higher incidence of epilepsy. Golden Retrievers, Labrador Retrievers, and English Springer and Cocker Spaniels are also commonly affected.

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Labrador Retrievers are one of the breeds that can suffer from seizures due to their genetic predisposition. Other breeds that are prone to seizures include German Shepherds, Border Collies, and Brachycephalic breeds.

Some breeds are more prone to seizures due to their genetic makeup. These breeds include Bernese Mountain Dogs, Boxers, Dachshunds, Irish Setters, Irish Wolfhounds, St. Bernards, Corgis, Wire-haired Fox Terriers, Standard Poodles, and Yorkshire terriers.

Here is a list of breeds that are more commonly affected by epilepsy:

  1. Beagles
  2. Golden Retrievers
  3. Labrador Retrievers
  4. English Springer and Cocker Spaniels
  5. German Shepherds
  6. Border Collies
  7. Brachycephalic (flatter faced) breeds
  8. Bernese Mountain Dogs
  9. Boxers
  10. Dachshunds
  11. Irish Setters
  12. Irish Wolfhounds
  13. St. Bernards
  14. Corgis
  15. Wire-haired Fox Terriers
  16. Standard Poodles
  17. Yorkshire terriers
  18. Staffordshire Bull Terriers

Managing Seizures

Seizures can occur in any breed of dog, though some types are more common in certain breeds.

If your dog is having a seizure, it's essential to keep her calm and safe. Seizures can happen suddenly, and your dog may appear confused or disoriented.

During a seizure, your dog may drop to the floor on her side and start kicking her legs as if she's treading water.

Medication Changes

Managing medication changes is crucial when it comes to seizure control in dogs with epilepsy. Abrupt changes in medication can disrupt seizure control and increase the risk of breakthrough seizures.

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A change in dose is a significant medication change that can affect seizure control. This is especially true if the dose is increased or decreased without consulting the veterinarian.

Forgetting to administer medication or altering the administration schedule can also disrupt seizure control. This is why it's essential to stick to the recommended administration schedule.

A change in formulation or manufacturer of medication can also affect seizure control. This is because different formulations or manufacturers may have varying levels of active ingredients.

Here are some common medication changes that can affect seizure control:

  1. Change in dose
  2. Change in formulation/manufacturer of medication
  3. Alterations to administration schedule
  4. Insulin overdose in diabetic animals

Remember, it's always best to consult with your veterinarian before making any changes to your dog's medication. They can help you determine the best course of action to ensure your dog's seizure control remains stable.

Take a look at this: Can You Hurt a Dog's Feelings?

Managing Canine Epilepsy

To minimize the impact of epilepsy triggers, it's essential to identify and avoid them. You can download a free seizure tracker to help determine what might be causing your dog's seizures.

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Establishing a regular daily routine for your dog can help reduce stress and anxiety, common triggers for seizures. This can include a consistent sleep schedule and regular exercise.

Providing a safe environment for your dog is crucial, free from potential hazards and triggers. This includes keeping toxic substances out of reach and ensuring adequate rest and relaxation.

A balanced diet with high-quality ingredients is vital to support overall health and minimize the risk of dietary-related triggers. Feed your dog a well-balanced diet and consult with your veterinarian for recommendations.

Monitoring and managing stress is also essential. Minimize stressors in your dog's environment and provide outlets for relaxation and mental stimulation, such as regular exercise and training.

Here are some potential triggers to be aware of:

  • Toxins from particular chemicals and foods
  • Heat exhaustion
  • Kidney disease
  • Anaemia
  • Liver disease
  • Trauma to the head
  • Tumours in the brain
  • Obstructed blood vessels (embolism)
  • Certain dog medications, such as some antidepressants
  • Diabetes
  • Electrolyte imbalances
  • Heartworms
  • Low blood sugar
  • Certain infectious diseases, such as Toxoplasma or Lyme disease
  • Nutritional deficiencies, such as thiamine, magnesium, zinc or folic acid
  • Stress

Cluster seizures, which are two or more seizures in a row, can be particularly dangerous and should be reported to your veterinarian immediately.

Signs and Symptoms

A seizure in a dog can be a frightening experience, but being aware of the signs and symptoms can help you identify what's happening and get your furry friend the help they need.

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One of the most common signs of a seizure is collapse, but there are many other indicators to look out for, including jerking bodily movements, stiffening, and muscle twitching.

Drooling and foaming at the mouth can also be signs of a seizure, and if your dog is experiencing any of these symptoms, it's essential to schedule a neurological examination with your veterinarian for proper diagnosis and treatment.

Some common signs of a seizure include:

  • Muscle spasms or tremors
  • Lack of awareness or consciousness
  • Drooling or foaming at the mouth
  • Paddling or jerking of the limbs

Emotional States

Stress can trigger seizures in some dogs, especially when there's a change in routine. This can be as simple as a different feeding schedule or a change in the daily walk.

Excitement or stimulation can also be a seizure trigger, such as during meal time or playtime with another dog.

Separation anxiety is another common emotional state that can lead to seizures. This can be especially true if your dog is left alone for extended periods of time.

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Fear is a natural response to a perceived threat, and in some dogs, it can trigger seizures. This can be due to a variety of factors, including loud noises or unfamiliar environments.

Changes in environment can be overwhelming for some dogs, leading to anxiety and potentially seizures. This can be as simple as a visit to a new park or a trip to the vet.

Some common emotional states that can lead to seizures in dogs include:

  • Stress due to changes in routine
  • Excitement or stimulation
  • Separation anxiety
  • Fear
  • Changes in environment
  • Witnessing traumatic events

Electrolyte Imbalances

Electrolyte Imbalances can be a serious issue for your furry friend's health. Dehydration, vomiting, diarrhea, and kidney disease can all disrupt electrolyte levels in dogs.

Dehydration is a common cause of electrolyte imbalances, and it's essential to monitor your dog's water intake, especially during hot summer months or after intense exercise.

Vomiting and diarrhea are also major culprits, as they can quickly lead to an imbalance of essential electrolytes like sodium and potassium.

Here's an interesting read: What Food Gives Dogs Diarrhea

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Kidney disease can also disrupt electrolyte levels, making it crucial to work closely with your veterinarian to manage your dog's condition.

Here are some common electrolytes that can be affected by these disruptions: ElectrolyteRole in the BodySodiumHelps regulate fluid balancePotassiumSupports nerve functionCalciumEssential for muscle and nerve functionMagnesiumInvolved in muscle and nerve function

Seizure Signs and Symptoms

If your dog is having a seizure, there are some common signs and symptoms to look out for. One of the most obvious signs is the dog collapsing.

A dog may exhibit jerking bodily movements, stiffening, muscle twitching, and loss of consciousness during a seizure. Drooling, chomping or tongue chewing, foaming at the mouth, and involuntary defecating or urating are also possible symptoms.

Right before a seizure hits, a dog may look dazed or as if she's staring off into space. She may also become unsteady.

During a seizure, a dog may experience involuntary muscle spasms or tremors that can affect their entire body or just certain parts of their body. These spasms or tremors can be violent and cause the dog to shake uncontrollably.

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If your dog is having a seizure, you may notice a lack of awareness or consciousness, where she seems dazed and unresponsive to your touch or voice. She may also drool excessively or foam at the mouth.

Some seizures can cause increased activity in the brain's motor neurons that control movement, resulting in paddling or jerking of the limbs. This can be a sign of involuntary rigidity.

Here are some common symptoms of seizures in dogs:

  • Muscle spasms or tremors
  • Lack of awareness or consciousness
  • Drooling or foaming at the mouth
  • Paddling or jerking of the limbs

A grand mal seizure is a type of seizure that can cause a dog to lose consciousness, experience convulsions, stiffen their limbs, and shake uncontrollably.

Frequently Asked Questions

Can a dog have a seizure out of nowhere?

Yes, dogs can have seizures without warning, but it's essential to have your vet investigate the cause to rule out underlying conditions. Overheating and dehydration are common triggers, but a thorough examination is still necessary to determine the root cause.

What infectious diseases cause seizures in dogs?

Dogs can develop seizures due to infectious diseases such as rabies and canine distemper. These diseases can cause inflammation and damage to the brain, leading to seizures.

What autoimmune disease causes seizures in dogs?

Systemic Lupus Erythematosus (SLE) is an autoimmune disease that can cause seizures in dogs, along with other symptoms such as lameness and kidney failure. If you suspect your dog has SLE, consult a veterinarian for proper diagnosis and treatment.

Ada Goodwin

Lead Writer

Ada Goodwin is a versatile writer with a passion for uncovering the hidden stories of our world. With a keen eye for detail and a love for the unusual, she has explored a wide range of topics, from the cultural history of Japan to the fascinating world of taxidermy exhibits. Her writing often delves into the lives of individual dogs, monuments, and statues, revealing the unique stories and histories behind each one.