A tonic–clonic, historically referred to as “grand mal,” seizure, is one of the most common seizure types appearing in epilepsy. The key differences between these phases are as follows: The tonic ...

Tonic-clonic seizures are the type of epileptic seizure most people recognise. In the past they were called grand-mal seizures. Tonic-clonic seizures can have a generalised onset, meaning they affect ...