What is a tonic-clonic seizure? This type of seizure (also called a convulsion) is what most people think of when they hear the word "seizure." An older term for this type of seizure is "grand mal." As implied by the name, they combine the characteristics of tonic and clonic seizures. Tonic means stiffening, and clonic means rhythmical jerking.

2023年12月12日 · A tonic-clonic seizure, previously known as a grand mal seizure, causes a loss of consciousness and violent muscle contractions. It's the type of seizure most people picture when they think about seizures.

Tonic-clonic seizures, formerly known as “grand mal” seizures, are the most visible and recognized type of seizure. These involve uncontrolled convulsions and other muscle movements. They usually don’t last more than a few minutes, but often happen with epilepsy and sometimes cause severe problems and injuries.

Tonic-clonic seizures involve both tonic (stiffening) and clonic (twitching or jerking) phases of muscle activity. Tonic-clonic seizures may start with a simple partial seizure or aura. The person may experience changes in sensation, mood or emotion leading up to the tonic-clonic seizure.

A seizure that originates in both halves (hemispheres) of the brain simultaneously, causing stiffness or twitching throughout the body, is known as a generalized tonic or clonic seizure. A tonic or clonic seizure can also begin in one area of the brain (called a partial or focal seizure), affecting only one part of the body such as an arm or a leg.

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 both sides of the brain from the start. When this happens, the seizure is called a generalised tonic-clonic or bilateral convulsive seizure.

2020年11月17日 · Tonic-clonic seizures, formerly known as grand mal seizures, embodies the social idea of seizures with the strong convulsions and foaming at the mouth that are common symptoms of this type of electrical disturbance in the brain.