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Absence seizures involve brief, sudden lapses of consciousness. They're more common in children than in adults.
A person having an absence seizure may stare blankly into space for a few seconds. Then the person typically returns quickly to being alert. This type of seizure usually doesn't lead to physical injury. But injury can result during the period when the person loses consciousness. This is particularly true if someone is driving a car or riding a bike when the seizure happens....
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A simple absence seizure causes a vacant stare, which may be mistaken for a brief lapse in attention. The seizure lasts about 10 seconds, though it may last as long as 30 seconds. There's no confusion, headache or drowsiness after the seizure.
Symptoms of absence seizures include:
Absence seizures usually have a genetic cause.
In general, seizures occur as a result of a burst of electrical impulses from nerve cells in the brain, called neurons. Neurons typically send electrical and chemical signals across the synapses that connect them.
In people who have seizures, the brain's usual electrical activity is altered. During an absence seizure, these electrical signals repeat themselves over and over in a three-second pattern....
Your child's health care provider may start at the lowest dosage of anti-seizure medicine possible. Then the provider may increase the dosage as needed to control the seizures. Children may be able to taper off anti-seizure medicines under a provider's supervision after they've been seizure-free for two years.
Drugs prescribed for absence seizure include:
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
© Mayo Clinic
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