What Is a Seizure?

A seizure is a sudden burst of electricity in your brain, very much like a tiny bolt of lightning. This electricity is a signal that causes your body to feel different, or makes your body do things that you can't control. Sometimes the electrical signal only reaches part of your brain. Then a part of your body, like an arm or a leg, may move on its own. If the signal goes all through your brain, you may shake all over or may fall asleep for a short time. The whole seizure is usually very short—only a few seconds or perhaps a minute or so.

Topic Editor: Steven C. Schachter, M.D.
Last Reviewed:12/15/06