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.

What is a seizure? A seizure (pronounced “see-zhr”) is a surge of abnormal electrical activity in your brain. The most recognizable symptoms of a seizure are a temporary loss of consciousness and …

Apr 7, 2025 · Epilepsy is a chronic brain disorder in which groups of nerve cells, or neurons, in the brain sometimes send the wrong signals and cause seizures. Epilepsy (sometimes referred to as a seizure …

There are two major classes or groups of seizures. Focal onset seizures start in one area and can spread across the brain and cause mild or severe symptoms, depending on how the electrical …

May 15, 2024 · Generalized seizures affect both sides of the brain and may cause loss of consciousness. When a person has a generalized seizure, they may: Fall down if they lose muscle …

Apr 16, 2025 · The term "seizure" is often used interchangeably with "convulsion." During convulsions a person has uncontrollable shaking that is rapid and rhythmic, with the muscles contracting and …

A seizure is characterized by a sudden and temporary burst of abnormal electrical activity between brain cells (neurons). Seizure types and symptoms vary.

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.

Jul 25, 2024 · Epilepsy is a brain disorder that happens when certain nerve cells in your brain misfire. It is the most common cause of recurring seizures. They can affect your behavior or the way you see...

However, when a seizure occurs, there may be too much or too little activity, causing an imbalance between exciting and stopping activity. The chemical changes can lead to surges of electrical activity …