About
Epilepsy
Epilepsy
is a brain disorder in which clusters of nerve cells, or
neurons, in the brain sometimes signal abnormally. In epilepsy,
the normal pattern of neuronal activity becomes disturbed,
causing strange sensations, emotions, and behavior or sometimes
convulsions, muscle spasms, and loss of
consciousness.
Epilepsy
is a disorder with many possible causes. Anything that disturbs
the normal pattern of neuron activity - from illness to brain
damage to abnormal brain development - can lead to
seizures.
Epilepsy
may develop because of an abnormality in brain wiring, an
imbalance of nerve signaling chemicals called
neurotransmitters, or some combination of these
factors.
Having a
seizure does not necessarily mean that a person has epilepsy.
Only when a person has had two or more seizures is he or she
considered to have epilepsy. EEGs and brain scans are common
diagnostic test for epilepsy.
Treatment
Once
epilepsy is diagnosed, it is important to begin treatment as
soon as possible. For about 80 percent of those diagnosed with
epilepsy, seizures can be controlled with modern medicines and
surgical techniques.
Some
antiepiletic drugs can interfere with the effectiveness of oral
contraceptives. In 1997, the FDA approved the vagus nerve
stimulator for use in people with seizures that are not
well-controlled by medication.
Prognosis
Most
people with epilepsy lead outwardly normal lives. While
epilepsy cannot currently be cured, for some people it does
eventually go away. Most seizures do not cause brain damage. It
is not uncommon for people with epilepsy, especially children,
to develop behavioral and emotional problems, sometimes the
consequence of embarrassment and frustration or bullying,
teasing, or avoidance in school and other social
setting.
For many
people with epilepsy, the risk of seizures restricts their
independence (some states refuse drivers licenses to people
with epilepsy) and recreational activities. People with
epilepsy are at special risk for two life-threatening
conditions: status epilepticus and sudden unexplained
death.
Most women
with epilepsy can become pregnant, but they should discuss
their epilepsy and the medications they are taking with their
doctors. Women with epilepsy have a 90 percent or better chance
of having a normal, healthy baby.
Research
Scientists
are studying potential antiepileptic drugs with goal of
enhancing treatment for epilepsy. Scientists continue to study
how neurotransmitters interact with brain cells to control
nerve firing and how non-neuronal cells in the brain contribute
to seizures.
One of the
most-studied neurotransmitters is GABA, or gamma-aminobutryic
acid. Researchers are working to identify genes that may
influence epilepsy.
This
information may allow doctors to prevent epilepsy or to predict
which treatments will be most beneficial. Doctors are now
experimenting with several new types of therapies for epilepsy,
including transplanting fetal pig neurons into the brains of
patients to learn whether cell transplants can help control
seizures, transplanting stem cells, and using a device that
could predict seizures up to 3 minutes before they
begin.
Researchers are continually improving MRI and other
brain scans. Studies have show that in some case, children may
experience fewer seizures if they maintain a strict diet -
called the ketogenic diet - rich in fats and low in
carbohydrates.
Reference for
Epilepsy Article
National Institutes
of Health
Health
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Institute
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Institute
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and Blood Institute
National Institute on
Aging
National Institute of
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National Institute on Drug
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