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UPDATED: Fri, 06/13/2008 - 6:46am

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Types of Seizures

Seizures take many forms. Before your doctor can prescribe the right treatment, he or she must figure out which type (or types) you have. That's the purpose of all the tests discussed in the Diagnosis section—not just to tell whether you have epilepsy but also to tell what kind.

There are so many kinds of seizures that neurologists who specialize in epilepsy are still updating their thinking about how to classify them. Usually, they classify seizures into two types, primary generalized seizures and partial seizures. The difference between these types is in how they begin:

Primary generalized seizures

Primary generalized seizures begin with a widespread electrical discharge that involves both sides of the brain at once. Hereditary factors are important in many of these seizures.

Partial seizures

Partial seizures begin with an electrical discharge in one limited area of the brain. Some are related to head injury, brain infection, stroke, or tumor, but in most cases the cause is unknown.

One question that is used to further classify partial seizures is whether consciousness (the ability to respond and remember) is "impaired" or "preserved." The difference may seem obvious, but really there are many degrees of impairment or preservation of consciousness.

Identifying certain seizure types and other characteristics of a person's epilepsy like the age at which it begins, for instance, allows doctors to classify some cases into epilepsy syndromes. This kind of classification helps us to know how long the epilepsy will last and the best way to treat it.

Click on the names below for descriptions and details about each type:

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


This content is user-generated. Content is not monitored nor consistently reviewed by the epilepsy.com Editorial Board. Epilepsy.com therefore cannot guarantee the accuracy of any content edited with the Wiki sections. While epilepsy.com, the Epilepsy Therapy Project, and its partners encourage visitor interaction and publishing within these sections, users should use caution when exploring content, especially as it pertains to health concerns. No content on epilepsy.com is intended to replace the care of a doctor. We encourage you to contact your own health care provider for individual medical advice. We cannot provide second opinions or make specific recommendations regarding therapy, nor does this Wiki content constitute a recommendation for any diagnosis or treatment options.


It has been said repeatedly that there are over 40 different types of seizures with more or less only the most 'popular' listed. Let's see if we can locate all of the common ones, as well as the more rare types of seizures and epilepsy. Some of the names may refer to the same type of seizure or epilepsy and whenever possible, this should be cross-referenced. 

This thread was created by Spiz's curiosity to research how many types of seizures can be located. Anyone interested in helping find them, please list what you find here along with their description.  

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Are your seizures usually

Less than 1 per year
14% (24 votes)
A few per year
22% (37 votes)
A few per month
25% (42 votes)
A few per week
20% (33 votes)
Several per day
19% (31 votes)
Total votes: 167

View results
View past poll results