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You are most likely asking about a convulsive seizure commonly known as a grand mal seizure. There is no set period of time. Seizures may last a few seconds or several minutes. Commonly they last about 1 to 3 minutes, but have been known to last much longer in severe cases.

There are also many types of seizures. They are no longer limited to just grand mal and petit mal. In fact those two terms given way to more descriptive terms relating to the actual type of seizure involved. The lengths of time for the various types of seizures also varies according to the specific type involved.

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14y ago

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