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Epilepsy in animals occurs most often
as a genetically inherited trait. Certain pure bred dogs seem to
be more likely to have this problem, such as the Poodle, German
Shepherd, Irish setter, and others. The most common age of onset
is between 3-5 years. There seems to be no greater incidence of
epilepsy for females verses males.
Epilepsy is expressed as a seizure
or convulsion that lasts for approximately 1-2 minutes. Dogs can
have both the grand mal type as well as the petite
mal type of seizure. In both cases there may be an aura
that precedes the event. The owners see this as a period of instability
with strange, often submissive like behavior. The grand mal type
of seizure is described as a marching discharge of activity while
the petite mal may be described as a frozen stare for a very short
period of time. In both cases there is an inability of the pet to
respond voluntarily or be able to focus on where they are during
the event. The post ictal phase, which follows the seizure, is usually
of a variable length of time. Often the owner and pet are very frightened
of what has just happened and act accordingly.
The diagnosis of epilepsy is often
made by ruling out other possible causes or by having a known epileptic
in the family tree. Confirmation of epilepsy is made by the EEG
(electroencephalogram). A consistent repetition of seizures over
time is a hallmark sign of epilepsy.
Treatment centers on suppressing the
irritable spot in the brain where the seizure starts or by strengthening
the zone of inhibition around the unstable spot. Drugs such as phenobarbital
have long been used to accomplish this process. This drug is safe
for long term use, however, once started you must continue to give
the medication regularly otherwise you will risk an avalanche
of seizures occurring. A blood test is performed to see if there
are adequate levels of the medication in the bloodstream. In most
cases once the proper dosage has been established the seizures will
disappear and a normal life expectancy will return.
While convulsions are not always from
epilepsy they are always dramatic through the eyes of the pet owner.
Your veterinarian will be able to best advise you as to the significance
of the seizure as well as how best to prevent them. In most cases
it is best to try and not panic when your pet has a seizure but
rather to observe what happens during the event so as to be able
to recount the details of the experience to your veterinarian upon
examination.
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