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Pediatric Neurology
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Absence Seizure
Absence Seizure
Jagdish Kathwate
More..
Absence Seizure - Patient Education
What is an absence seizure?
In absence seizures, also called petit mal seizures, a person loses awareness of their surroundings for up to 20 seconds.During an absence seizure, a child will suddenly stop what they are doing and appear to stare into space.Absence seizures are part of a group of epilepsy symptoms called generalised seizures and mostly affect children.
What causes absence seizures?
The brain's nerve cells (neurons) communicate with one another by firing tiny electric signals, but with a seizure, these signals become abnormal.Absence seizures rarely cause a true convulsion in which the person falls down or collapses, and despite briefly losing consciousness, the person recovers fully with no lingering confusion or other ill effects. These "spells" may occur infrequently or several times per hour. In children, absence seizures may interfere with learning and are often misinterpreted as impertinence or inattention.
What are the symptoms of an absence seizure?
Because absence seizures (also known as petit mal) are usually quite brief, tend to strike during times of inactivity, and closely resemble daydreaming or "being off in one's own world," they may pass unnoticed by others and go undiagnosed for some time.
Absence seizures fall into two categories: typical and atypical.
Typical absence seizures begin abruptly, last up to 20 seconds, and resolve themselves without complication. The person simply stops in his or her tracks and enters a staring, trance-like state during which he or she is unresponsive and unaware of his or her surroundings. He or she may make fumbling movements with his or her hands, and there may also be eyelid fluttering, lip smacking, or chewing motions during the seizure. When the seizure passes, the person returns to normal, with no memory of the event and no lingering effects. Generally speaking, typical absence seizures have no discernible cause.Atypical seizures are similar to typical seizures, except that they tend to begin more slowly, last longer (up to a few minutes) and can include slumping or falling down. The person may also feel confused for a short time after regaining consciousness. While the cause of atypical seizures may be unidentifiable, they are sometimes traced to abnormalities in the brain that were present at birth (congenital) or from trauma or injury, or from complications from liver or kidney disease.
Jagdish Kathwate
Absence Seizure
Absence Seizure
08/01/2015
08/01/2015
×
Contributor Information and Disclosures
Jagdish Kathwate
MD Pediatrics. Assistant Professor, Government Medical College, Aurangabad, India.
First Created:
08/01/2015
Last Updated:
08/01/2015
×
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