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| Generalized seizures |
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| In a generalized seizure, consciousness is often impaired, and both hemispheres of the brain are involved from the start. These seizures are sometimes called "primary generalized seizures." (This is to show the difference from partial seizures that become secondarily generalized.) |
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| Types of generalized seizures |
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Absence seizures |
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Mostly common in children, this seizure involves a brief disruption of consciousness—lasting from a few seconds to about half a minute. Typically, this seizure starts suddenly; the person stops what they are doing and stares blankly. Their eyes may roll upwards briefly before this event disappears as quickly as it came. In the past, these seizures were known as "petit mal" attacks. These seizures can include eyelid movement, drooping or drawing back of the head, smacking of lips, or sweating. |
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Myoclonic seizures |
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These seizures are characterized by sudden muscle jerks—often confined to one or more limbs. There may be single or several jerks. Myoclonic seizures often happen while falling asleep or within a short time of waking up. They can happen alone or with other types of generalized seizures. |
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