Epilepsy affects approximately 65 million people worldwide and is associated with increased rates of bodily injuries and mortality when not optimally treated. The primary goal of epilepsy treatment is to eliminate seizures while minimizing adverse effects of antiseizure drugs. JAMA Senior Editor Christopher Muth, MD, and Professor of Clinical Neurology at the University of Miami Miller School of Medicine Andres Kanner, MD, discuss establishing a diagnosis of epilepsy and the use of antiseizure medications for adult patients with epilepsy. Related Content: Treating Epilepsy With Antiseizure Medications A Review of Antiseizure Medications for Adults With Epilepsy