Back What is a seizure?

A seizure is the abnormal electrical release of cells, called neurons, in the brain. This can cause different symptoms based on the location of the seizure and where the abnormal electrical activity spreads. Not all seizures are the same. They can range from tingling in a finger to grand mal (generalized) seizures, during which people lose consciousness, become stiff, and jerk.

Video: What is a seizure?

A brief demonstration of how normal neurons communicate compared to overly excited neurons that cause seizures in the brain.

Keep in mind: This animation contains sequences of flashing images/flash photography. Please consider prior to viewing. When watching the animation, please make sure the room is well lit and avoid sitting too close to your screen.