A seizure is a temporary abnormal electro-physiologic phenomenon of the
brain, resulting in abnormal synchronization of electrical
neuronal activity. It can manifest as an alteration in
mental state,
tonic or
clonic movements, convulsions, and various other psychic symptoms (such as
déjà vu or
jamais vu). It is caused by a temporary abnormal electrical activity of a group of
brain cells. The medical syndrome of recurrent, unprovoked seizures is termed
epilepsy, but some seizures may occur in people who do not have epilepsy.
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