The difference may seem obvious, but there are many degrees of consciousness impairment or preservation. One question that is used to further classify partial seizures is whether consciousness (the ability to respond and remember) is impaired or preserved. Some partial seizures are related to head injury, brain infection, stroke or tumor but, in most cases, the cause is unknown. Hereditary factors are important in partial generalized epilepsy, which is more likely to involve genetic factors than partial epilepsy - a condition in which the seizures arise from a limited area of the brain. Partial seizures begin with an electrical discharge in one limited area of the brain.Įpilepsy in which the seizures begin from both sides of the brain at the same time is called primary generalized epilepsy. Primary generalized seizures begin with a widespread electrical discharge that involves both sides of the brain at once. The difference between these types is in how they begin. Typically, seizures belong in one of two basic categories: primary generalized seizures and partial seizures. Seizures vary so much that epilepsy specialists frequently re-classify seizure types.
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