Seizures
References online:
Epilepsy
Foundation The Epilepsy Foundation
will ensure that people with seizures are able to participate
in all life experiences; and will prevent, control and cure
epilepsy through research, education, advocacy and services.
NICHCY
- National Information Center for
Children and Youth with Disabilities. Subject is epilepsy.
Seizure
alert dogs Seizure Alert dogs are lifesavers for their owners.
Their innate ability to predict imminent seizures, enables them
to warn their owners to get to a place of safety and prepare
themselves so that they can avoid injury.
Americans
with disability act - Epilepsy as a Disability
Johns Hopkins Research
Center- Epilepsy research laboratory.
Children with seziure
disorders - A pediatric nueraology site.
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Information from the childbrain.com web site
What is a Seizure?
A seizure is an abnormal electrical discharge from the brain. It
may affect a small focal area of the brain, or the entire brain (generalized).
The area affected by the seizure loses its regular ability of function
and may react uncontrollably. For example, if an area of the brain
that controls an arm has a seizure, the arm may shake repetitively.
If a seizure affects the entire brain, all the extremities may shake
uncontrollably. Some seizures may present with staring and unresponsiveness.
Theoretically, any function of the brain, motor, smell, vision, or
emotion may be individually affected by a seizure. The seizure, however,
for the most part will always follow the same pattern in a given individual.
For further understanding of seizures, you can watch this seizure
video using the link below. To view this online video, you must have
the RealVideo™ plug-in.
[Free version available.]
A Video
Journal on Epilepsy: "Was That a Seizure?"
This video is an educational tool for physicians to help differentiate
among a few of the most common medical problems that mimic or actually
cause seizures.
Ciba-Geigy Corporation
1993, 21:24
2. What is Epilepsy?
Epilepsy or a seizure disorder (same meaning) is defined by having
2 or more seizures. The seizures must be of an unprovoked cause. Meaning
that there is no immediate connectable cause for the seizures, such
as low blood glucose, exposure to toxins, alcohol withdraw, immediate
effect of a trauma, of fever in young children (less than 6 years
of age).
3. What are the Different Types of Seizures?
Seizures are generally divided into 2 main types:
-
Focal: involving a limited brain
region
-
Generalized: involving the entire
brain. Therefore always associated with loss of consciousness.
Focal seizures may spread to the rest of the brain,
therefore becoming focal seizures with secondary generalization.
-
Partial (focal) seizures
- Simple partial seizures (without loss of consciousness)
- With motor signs (uncontrolled muscle movements)
- With somosensory or special sensory symptoms (smell, vision,...)
- With autonomic symptoms (nausea, blood pressure changes,...)
- With psychic symptoms
- Complex partial seizures (with loss of consciousness)
- Simple partial followed by a loss of consciousness
- Impaired consciousness from the onset
- Partial seizures evolving to generalized seizures
- simple partial with secondary generalization
- Complex partial with secondary generalization
- Simple to complex to generalized
-
Generalized seizures
-
Typical absence seizures (petit mal): consists
of staring for a few seconds then returning to full function,
where activity was left at the onset of the seizure, as if nothing
occurred. The patient has no recollection of the event. This is
unlike most other seizures that will be followed by as after seizure
(or postidital) drowsiness and confusion that may be prolonged
at times.
-
Myoclonic seizures: Usually presents with rapid
muscle jerks. These may be caused by:
-
Benign (non-epileptic myoclonus): similar
to the jerks one has when falling asleep.
-
Benign myoclonic epilepsy: A rare disorder
that starts between 4 months and 2 years
-
Severe myoclonic epilepsy: A disorder that
results in chronic progressive brain damage
-
Lenox-Glastaut syndrome: A severe epileptic
disorder, associated with atypical absence (atonic and myoclonic),
slow spike–wave complexes on EEG, and mental retardation.
-
Clonic seizures:
-
Tonic seizures
-
Clonic tonic seizures (grand mal)
-
Atomic seizures: Loss of muscle tone (drop effects)
-
Unclassified epileptic seizures: seizures that
do not fit in the above classification, such as neonatal seizures
and febrile seizures.
4. What are Febrile Seizures?
Definition. Febrile seizures are
convulsive events that are considered benign (not associated with
serious difficulties), occurring between 6 months and 6 years of age.
The typical febrile seizure is a convulsive event that lasts about
one to five minutes. This usually occurs with the rapid rise of the
fever and consists of a rhythmic jerking of the extremities, eye rolling,
unresponsiveness, sometimes cyanosis (bluish discoloration around
the mouth and the tips of the extremities), followed by 30 minutes
of drowsiness and confusion. As the temperature normalizes, the child
may return to his normal self. An occasion, a febrile seizure may
occur differently, non-convulsive (without shaking), presenting a
loss of tone and consciousness or with stiffening of the body.
Complex features. Some children may have complex
febrile seizures. Complex features include the following:
- Duration, more than 20 minutes
- Focality when the seizure occurs on one side of the body
- Multiplicity, when more than one seizure occurs during a 24-hour
period
The significance of the complex features is that of a higher risk
for future epilepsy; the more complex the features, the higher the
risk for epilepsy or seizures without fever. Generally if a child
has a simple febrile seizure the risk for epilepsy is 2% compared
to 1% in the general population. The risk for future febrile seizures
is about 30%, or 50% if the first seizure occurred before one year
of age. Also, the lower the temperature that provoked the first
febrile seizure is, the higher the risk for future febrile seizure
events.
Treatment. Treatment for febrile seizures is usually
unnecessary. Lowering of the temperature with Tylenol or Motrin
is usually ineffective. Anticonvulsants may be used in unusual situations,
usually continuous Phenobarbithal or Depakene (Depakene after 3
years of age). Oral valium as premedication, given intermittently
during febrile illnesses is highly effective and does not require
continuous medication administration and monitoring. This is my
first choice for febrile seizures that require treatment.
Long-term effects. Febrile seizures are not considered
to cause any damage to the brain. Studies have shown no difference
in intelligence between children who suffer from febrile seizures
or their siblings (or identical twins) who do not have febrile seizures.
Some recent studies even suggest improved memory function in children
who have had febrile seizures.
Complications. Complications from febrile seizures
are rare and are mostly associated with focal and prolonged febrile
seizures. Future epilepsy, especially with recurrent focal seizures,
was reported. Respiratory compromise is rare and may be caused by
prolonged convulsions affecting the respiratory muscles and breathing.
Mesial temporal sclerosis, or scarring of the inner
part of the temporal lobe, called the hippocampus, is a condition
thought-to-be-caused by recurrent focal febrile seizures. The hippocampus,
if damaged, is highly epileptogenic (causing seizures). If mesial
temporal sclerosis develops, this is associated with a form of epilepsy
(partial complex seizures), difficult to control. This, however,
is a rare and questionable complication of febrile seizures.
5. What are Some of the Possible Causes for Seizures?
The causes for seizures include the immediate causes
for acute seizures and the chronic causes for epilepsy or a seizure
disorder. The acute causes include hypoglycemia (low blood sugar,
hypocalcemia (low blood calcium), meningitis, bacterial toxins (such
as shigella), alcohol withdrawal, environmental toxins, electrical
shock, and side effects of medication. Penicillin overdose may also
cause a seizure. Chronic causes for epilepsy include genetic epilepsy
(benign rolandic, absence and juvenile myoclonic epilepsies are some
examples), congenital brain malformation associated with some neurocutaneous
disorders (tuberous sclerosis, neurofibromatosis), migrational defects
(where gray matter migrates to the wrong brain region during early
development. Other causes include chronic effects of trauma or infection
that did cause brain damage or damaged an area called the hippocampus
in the front central temporal lobe that if damaged, becomes highly
epileptogenic.
Seizure Disorders
By :Daisy Salas for Adaptive Physical Education
- Seizures are a condition of the brain.
- Around 650 out of ever 100,000 people are reported as having a seizure
disorder.
- There are several types of seizures to find out more about the different
types look on page 238 of Adapted Physical Education and Sport, by
Joseph P. Winnick.
If some one is having a seizure:
- Put something soft under their head
- Do not restrain them
- Clear the area of hard or harmful objects
- Do not put anything into the persons mouth
- Clear the room, so when the person is finished they wont be embarrassed
- After the seizure the person should be told what happened
- After a seizure give support and let them know it is ok
Students with seizure disorders are aloud to participate in
all types of sports and activities.
- As long as the seizure is controlled and supervised.
The activity depends on the medication
- Physical activity is thought to elevate the seizure threshold.
When a student is swimming
- they must have their seizures under control
- they should swim with a partner
Activities that people with seizures can not do or need them
to be modified.
- weight training
- gymnastics
- rope climbing
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