The exact etiology of JAE is still elusive. Patients with JAE usually develop normally, although uncontrolled absence seizures may have an impact on their ability to learn at school. GTCS and myoclonic seizures often occur 1-10 years after the absence seizure onset. The seizures onset is typically between 9 and 13 years of age and it manifests as a ''staring spell'' that can be accompanied by atonic postures such as drooping of the head and/or automatisms such as lip smacking. ![]() JAE is characterized by sporadic occurrence of absence seizures (only one or a few absences daily 100% of cases), frequently associated with a long-life prevalence of generalized tonic-clonic seizures (GTCS 80%) and sporadic myoclonic jerks (20%). The incidence of JAE is still unknown but it accounts for approximately 2-3% of patients with adult epilepsy in general, and about 8-10% of patients with genetic generalized epilepsy (GGE).
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