Epilepsy: Atonic Seizures
Topic Overview
An atonic seizure is a sudden loss of muscle tone in the muscles that hold the body and head upright.
- The seizure occurs without warning and usually causes the person to fall down.
- Some atonic seizures may be more limited, only causing the person's head to drop for a moment.
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.
Credits
ByHealthwise Staff
Primary Medical Reviewer John Pope, MD, MPH - Pediatrics
Adam Husney, MD - Family Medicine
Martin J. Gabica, MD - Family Medicine
Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Steven C. Schachter, MD - Neurology
Current as ofOctober 9, 2017
Current as of:
October 9, 2017