Juvenile myoclonic epilepsy (Jantz syndrome) quiz
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Learn more about Juvenile myoclonic epilepsy (Jantz syndrome)
Content updated on 2022-06-02
Juvenile myoclonic epilepsy is an epilepsy syndrome characterized by myoclonic jerks (quick jerks of the arms or legs), generalized seizures, and sometimes, absence seizures. They often occur when people first awaken in the morning. The exact cause is unknown. A family history of epilepsy or gene mutations may sometimes be linked to the condition.
The hand or leg on one side occasionally jerks or makes a sudden movement
Limbs on one side of the body jerk when / just after waking up
Lost consciousness when drinking alcohol or hungover
Lose consciousness when sleep deprived
Your doctor may ask these questions to diagnose juvenile myoclonic epilepsy (Jantz syndrome)
Do the limbs on one side of your body jerk when / just after waking up?
Do you lose consciousness when drinking alcohol or hungover?
Do you lose consciousness when you don't sleep enough?
Juvenile myoclonic epilepsy (Jantz syndrome) is usually well controlled with medications. Most patients do not outgrow their seizures and will need to take medication for the rest of their lives. Adequate sleep and avoiding alcohol can help reduce the likelihood of seizures.
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Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan