Epilepsy is a neurological disorder that affects millions of people in the United States and around the world. It causes abnormal signals in clusters of brain neurons that can lead to seizures. While anti-epileptic drugs can help control seizures for many, epilepsy has no cure and our understanding of its exact pathophysiology remains incomplete. The document discusses epilepsy's definition, diagnosis, related clinical disorders, treatment options, and areas that require further research to improve treatment.