An atonic seizure is a sudden loss of muscle tone in the muscles that hold the body and head upright.
Atonic seizures are fairly uncommon and 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 tonic seizures.)
People who have atonic or tonic seizures are likely to be injured when they fall. Children may have to wear helmets and restrict their activities to prevent serious injury.
|Primary Medical Reviewer||Susan C. Kim, MD - Pediatrics|
|Specialist Medical Reviewer||Steven C. Schachter, MD - Neurology|
|Last Revised||August 26, 2011|
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