Adult-Onset Seizure Disorder Secondary to Schizencephaly.

Schizencephaly is a very rare neurological disorder usually discovered during radiological evaluation of children and young adults with seizure disorders or neurodevelopmental anomalies. We present a 66-year-old patient with right-sided hemiatrophy and paresis presenting with an adult-onset seizure disorder. Her seizure was satisfactorily controlled with a single-therapy antiseizure drug. Congenital brain lesions should be part of the differential diagnoses in patients with epilepsy who have body asymmetry dated back to childhood.