“When identifiable, the causes of epilepsy usually involve some form of injury to the brain. For most people, though, epilepsy’s causes aren’t known.  A seizure occurs when a burst of electrical impulses in the brain escape their normal limits. They spread to neighboring areas and create an uncontrolled storm of electrical activity. The electrical impulses can be transmitted to the muscles, causing twitches or convulsions.”

WebMD (Dr. Matthew Hoffman)