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    Juvenile Myoclonic Epilepsy - Topic Overview

    Juvenile myoclonic epilepsy develops between ages 12 and 18. People with the disorder tend to have seizures that cause jerking in the shoulders or arms. Generalized tonic-clonic seizures and absence seizures may be present along with myoclonic seizures. Seizures often occur early in the morning.

    People with juvenile myoclonic epilepsy have normal intelligence and do not have other brain or nerve disorders. A family history of myoclonic seizures is present in about half of the people with the disorder. But the exact cause is unknown. Most people require lifelong treatment with medicine.

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    Understanding Absence Seizure -- the Basics

    Affecting about two of every 1,000 people, absence seizures (formerly called ''petit mal'' seizures) are caused by abnormal and intense electrical activity in the brain. Normally, the brain's nerve cells (neurons) communicate with one another by firing tiny electric signals. But with a seizure, these signals become abnormal. Seizures may affect an isolated part of the brain or may involve abnormal activity in the whole brain (called generalized seizures). Absence seizures are one form of generalized...

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    WebMD Medical Reference from Healthwise

    Last Updated: March 12, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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