Not Medical Advice: A Grand Mal (Granny) seizure, also known as a generalized tonic-clonic seizure, are seizures that involve the entire body and are most commonly associated with epilepsy. They are caused by abnormal electrical activity throughout the brain.
Grand Mal seizures usually involve rigid muscles, violent contractions and loss of consciousness. Many people will have hallucinations, dizziness or sensory changes right before the seizure starts.
Rapper Lil Wayne was rushed to a hospital earlier this month after having numerous seizures. He attributes the seizures to stress and is currently recovering after his near death experience.