Juvenile Myoclonic Epilepsy (Jantz Syndrome) Quiz
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Shohei Harase, MD (Neurology)
Dr. Harase spent his junior and senior high school years in Finland and the U.S. After graduating from the University of Washington (Bachelor of Science, Molecular and Cellular Biology), he worked for Apple Japan Inc. before entering the University of the Ryukyus School of Medicine. He completed his residency at Okinawa Prefectural Chubu Hospital, where he received the Best Resident Award in 2016 and 2017. In 2021, he joined the Department of Cerebrovascular Medicine at the National Cerebral and Cardiovascular Center, specializing in hyperacute stroke.
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Learn more about Juvenile myoclonic epilepsy (Jantz syndrome)
Content updated on Sep 14, 2022
What is juvenile myoclonic epilepsy (Jantz syndrome)?
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.
Symptoms of juvenile myoclonic epilepsy (Jantz syndrome)
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
Questions your doctor may ask to check for juvenile myoclonic epilepsy (Jantz syndrome)
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?
Treatment for juvenile myoclonic epilepsy (Jantz syndrome)
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.
View the symptoms of Juvenile myoclonic epilepsy (Jantz syndrome)
Diseases related to Juvenile myoclonic epilepsy (Jantz syndrome)
Reviewed By:
Shohei Harase, MD (Neurology)
Dr. Harase spent his junior and senior high school years in Finland and the U.S. After graduating from the University of Washington (Bachelor of Science, Molecular and Cellular Biology), he worked for Apple Japan Inc. before entering the University of the Ryukyus School of Medicine. He completed his residency at Okinawa Prefectural Chubu Hospital, where he received the Best Resident Award in 2016 and 2017. In 2021, he joined the Department of Cerebrovascular Medicine at the National Cerebral and Cardiovascular Center, specializing in hyperacute stroke.
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Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan