Published on: 7/9/2025
Can a seizure occur while fainting?
Yes, a seizure-like event can happen during fainting, known as convulsive syncope.
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Explanation
When someone faints, they may sometimes have movements that look like a seizure, called convulsive syncope.
How It Happens:
- Blood Flow: Fainting occurs when there is a sudden drop in blood flow to the brain.
- Body's Reaction: The body may react with jerking movements or twitching, which can look like a seizure.
Important Points:
- These movements are not the same as epileptic seizures.
- Convulsive syncope can occur in situations like donating blood, where fainting is more likely.
Understanding the difference between a true seizure and convulsive syncope is important for proper care and treatment.
(References)
- Kelly DM, & Costello DJ. (2017). Can syncope cause convulsive seizures in adults?. Clinical autonomic research : official journal of the Clinical Autonomic Research Society, 28667576.
- Brenner RP. (1997). Electroencephalography in syncope. Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society, 9244159.
- Lin JT, Ziegler DK, Lai CW, & Bayer W. (1982). Convulsive syncope in blood donors. Annals of neurology, 7103429.
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