Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Juvenile myoclonic epilepsy ?
    ### Response:
    Juvenile myoclonic epilepsy is an epilepsy syndrome characterized by myoclonic jerks (quick jerks of the arms or legs), generalized tonic-clonic seizures (GTCSs), and sometimes, absence seizures. The seizures of juvenile myoclonic epilepsy often occur when people first awaken in the morning.
    