Key Clinical MessageTo rule out underlying developmental brain defects such as schizencephaly, pediatric seizures necessitate a thorough examination. Adults who receive a diagnosis later in life may face severe management and prognosis difficulties. To avoid underdiagnosis of developing brain abnormalities, imaging should be a part of the workup for pediatric seizures. Imaging is critical to the diagnosis and therapy of such cases.AbstractClosed‐lip schizencephaly with the absence of the septum pellucidum is a rare congenital malformation of the brain that can be associated with a variety of neurological conditions. We report the case of a 25‐year‐old male with left hemiparesis who presented with recurrent seizures from childhood, poorly controlled with medications, and increased tremors. He has been taking anticonvulsant for the last 7 years and is under symptomatic management. Magnetic resonance imaging of the brain revealed closed‐lip schizencephaly with absent septum pellucidum.