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Epilepsy: Tonic Seizures - Topic Overview

Tonic seizures are fairly uncommon. They occur mostly in people with Lennox-Gastaut syndrome. This is a severe form of generalized epilepsy that begins in early childhood. (Children with Lennox-Gastaut syndrome may also have atonic seizures.)

When a tonic seizure occurs, the muscles in the body contract and the entire body stiffens. This occurs suddenly and without warning. And it often causes the person to fall down.

Recommended Related to Epilepsy

Understanding Seizures -- Symptoms

Symptoms of seizures vary widely, depending on the part of the brain affected by the electrical misfiring. If a very small part of the brain is affected, you might sense only an odd smell or taste. In other cases, you could have hallucinations or convulsions, or you could lose consciousness. Generalized tonic-clonic. This type of seizure is sometimes preceded by an aura (awareness of a strange odor, taste, or vision). You might lose consciousness, fall, and experience muscle rigidity (stiffness)...

Read the Understanding Seizures -- Symptoms article > >

People who have tonic or atonic seizures are likely to be injured when they fall. Children may have to wear helmets and restrict their activities to prevent serious injury.

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WebMD Medical Reference from Healthwise

Last Updated: August 26, 2011
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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