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Epilepsy

DISEASES OF DOGS

Symptoms, diagnosis and treatment options

If you see this icon in a fact sheet summary you may be dealing with a life threatening issue. Consult a veterinarian immediately.

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EPILEPSY

Epilepsy is a disorder of the brain where, although the brain is normal in structure, it functions abnormally. Generally, the disease occurs in animals between 6 months and 5 years of age, causing seizures that vary in intensity and frequency depending upon the dog. The condition is controlled by medication.

Where epilepsy develops in dogs  under 2 years of age it is often the case that medication may not fully control the seizures. As the animal ages, the seizure activity usually increases and it may become difficult to maintain control over the disease.

SEVERITY: Moderate to Severe. Generally controllable with medication but can become life threatening. See Treatment Options tab.

An epiletic seizure will begin without warning. A single seizure may be brief or may consist of multiple events with no break (Status epilecticus. See Treatment Options tab).

The dog will fall on its side, become stiff, chomp its jaw, salivate profusely, urinate, defecate, vocalise, and/or paddle with all four limbs and may become unconscious. These seizure activities generally last between 30 and 90 seconds. Dogs can display abnormal behaviour after seizuring that may include periods of confusion and disorientation, aimless wandering or pacing, eating or drinking more. Recovery from a seizure may be immediate or may take up to 24 hours.

Epilepsy is often first diagnosed by eliminating the possibility of other contributing diseases, for example, brain tumours, or toxicity. Blood tests are required initially to exclude such causes and also to give a baseline for future referral after initiating medication.

The two determining factors in diagnosis are age at onset and the pattern of seizures, i.e., the type and frequency. As a rule, the younger the age at onset, the more severe the epilepsy and also the increased likelihood of the disease being resistant to medication.

There are a number of therapies available for epilepsy and we may need to trial a few before the best option for your pet is found. During the initial stages of medicating, several blood tests may be required to determine the correct dosage.

The need for treatment is based on the severity and frequency of seizures, and the level of owner concern. Isolated instances of mild seizures every 2-3 months are usually not thought to warrant anti-epileptic medications initially. However, seizures often gradually increase in frequency so medication may need to be started in the future.

Therapy is initiated if there is either more than one generalised seizure, acute ‘clusters’ of more than one seizure within a 7 day period over a period of a month, or in the case of acute status epilepticus. Status epilepticus is defined as a series of seizures with no intervening states of consciousness. This stage of epilepsy is considered a medical emergency as it can cause irreversible nerve damage and/or be fatal. Once therapy has begun it must be maintained for the life of the dog. Cessation of treatment can induce seizures.

Human anti-epileptic medications are not appropriate for use in animals.

Anti-epileptic medications will decrease the severity, frequency and length of seizure activity but perfect control is rarely achieved. The normal goal of treatment is to achieve a balanced state of less than one seizure over 6 to 8 weeks. Epilepsy can become resistant to medication despite trialling the appropriate therapies available.

There are very few indicators that will help warn you of impending seizures in animals but reducing stress and avoiding ‘hot’ foods may help in reducing the likelihood of a seizure. If a seizure does occur try to prevent your pet from injuring themselves on surrounding objects, and avoid placing fingers in their mouths as muscle spasms may cause severe bites.

MORE DISEASES OF DOGS

DOGS: ADVICE FOR EMERGENCIES

ALL of the articles in this section cover symptoms that require immediate veterinary treatment.

E&OE. The information provided in the articles on this site is intended as a guide to assist readers to become better informed about health issues that may affect their pets and livestock. They are not a substitute for appropriate veterinary advice and treatment. They should not be used for diagnosis or treatment of any individual animal and no person should place reliance on information derived from them, where such reliance may result in loss, damage or injury. Always consult a qualified veterinarian to obtain advice.

Although Alpine Animal Doctors make every effort to ensure that the information contained in our articles is accurate and up-to-date we can accept no responsibility for errors or omissions that may occur.