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.

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.

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 …

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.

A seizure is a burst of uncontrolled electrical activity between brain cells (also called neurons or nerve cells) that causes temporary abnormalities in muscle tone or movements (stiffness, twitching or …

May 9, 2025 · A seizure is a sudden change in the brain's normal electrical activity. During a seizure, brain cells "fire" uncontrollably at up to four times their normal rate, temporarily affecting the way a …

Mar 13, 2026 · Epilepsy (sometimes referred to as a seizure disorder) can have many different causes and seizure types. Epilepsy varies in severity and impact from person to person and can be …

Jul 8, 2025 · A seizure is a sudden surge of electrical activity in the brain. Read about types of seizures, symptoms, diagnosis, treatment, prevention, and more.

Dec 4, 2023 · What Is a Seizure? A seizure is abnormal electrical activity in the brain that happens quickly. It may go nearly unnoticed. In serious cases, it may cause unconsciousness and …