Convulsive seizures (also called generalized tonic-clonic seizures) involve the whole body. These seizures used to be called “grand mal” seizures. They are the most dramatic type of seizure, causing rapid, rhythmic and sometimes violent shaking movements, often with loss of consciousness.
Epilepsy is a central nervous system (neurological) disorder in which brain activity becomes abnormal, causing seizures or periods of unusual behavior, sensations and sometimes loss of awareness.
Seizure symptoms can vary widely. Some people with epilepsy simply stare blankly for a few seconds during a seizure, while others repeatedly twitch their arms or legs. Having a single seizure doesn’t mean you have epilepsy. At least two seizures without a known trigger (unprovoked seizures) that happen at least 24 hours apart are generally required for an epilepsy diagnosis. Anyone can develop epilepsy. Epilepsy affects both males and females of all races, ethnic backgrounds and ages.