A seizure is abnormal electrical activity in your brain that temporarily affects your consciousness, muscle control and behavior.

Depending on the regions of the brain involved, seizures can lead to changes in movement, sensation, behavior, awareness, or consciousness. Symptoms vary widely.

What Exactly Is a Seizure? A seizure occurs when a person experiences a sudden surge of abnormal electrical activity in the brain.

A seizure is a burst of uncontrolled electrical activity between brain cells that causes temporary abnormalities in muscle tone or movements (stiffness, twitching or limpness), behaviors, sensations …

May 15, 2024 · There are two main types of seizures: generalized and focal seizures. These types describe where a seizure starts in the brain and how it may affect a person. Call 911 if a seizure (of …

Nov 1, 2024 · Learn about this burst of electrical activity in the brain and what causes it. Find out what to do if you see someone having a seizure.

Apr 7, 2025 · During a seizure, many neurons send signals at the same time, much faster than normal. This surge of excessive electrical activity may cause involuntary movements, sensations, emotions, …

A seizure is an abnormal release of electrical activity in the brain that causes temporary changes in how a person moves, feels, or thinks. Seizures can take many different forms, including whole-body …

Apr 17, 2025 · Seizures are changes in your brain’s electrical activity. Learn more about types of seizures, causes and symptoms, and how you can help someone having a seizure.

Seizure, sudden, uncontrolled electrical activity in the brain. Seizures produce a wide range of symptoms, including changes in behaviour, shaking or sudden movements, and changes in …