This is a hereditary epilepsy, with focal seizures arising in different focal regions in different family members but with each individual in a family having a single focal seizure type. There are no implications expected for development or learning and seizures are typically infrequent and well controlled.
This syndrome is characterized by the onset of focal seizures, typically in the presence of a family history of focal seizures that may arise in different locations in different individuals. Age of seizure onset is highly variable (from infancy to adulthood, mean age 13 years). Both males and females are affected. Antecedent and birth history are unremarkable. Head size and neurological examination are normal. Development and cognition are normal.