There is a very recurrent seizure that can occur in a substantial amount of people,; therefore, it’s very important to know about the cause of it. HC Health System confirms that, “Tonic-clonic (grand-mal) seizures occur in 25% of all patients with seizures [making this seizure the] most common type... in adults” (Kammerman and Wasserman). Most people, especially adults, have grand mal seizures. In public places, it’s anticipated for a person to acquire a grand mal seizure thenthan any other seizure. It’s useful to know in order for people to be aware of what seizure is more likely to happen to them. To, to also see if they can prevent a seizure from happening.