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Definition

By Mayo Clinic staff

Epilepsy is a disorder that results from the generation of electrical signals inside the brain, causing recurring seizures. Seizure symptoms vary. Some people with epilepsy simply stare blankly for a few seconds during a seizure, while others have full-fledged convulsions.

About one in 100 people in the United States will experience an unprovoked seizure in their lifetime. However, a solitary seizure doesn't mean you have epilepsy. At least two unprovoked seizures are required for an epilepsy diagnosis.

Even mild seizures may require treatment, because they can be dangerous during activities like driving or swimming. Treatment — which generally includes medications and sometimes surgery — usually eliminates or reduces the frequency and intensity of seizures. Many children with epilepsy even outgrow the condition with age.

Symptoms
References
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  2. Schachter SC, et al. Overview of the management of epilepsy in adults. http://uptodate.com/home/index.html. Accessed Jan. 6, 2009.
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  5. Information for healthcare professionals: Suicidal behavior and ideation and antiepileptic drugs. U.S. Food and Drug Administration Center for Drug Evaluation and Research. http://www.fda.gov/cder/drug/InfoSheets/HCP/antiepileptics200812.htm. Accessed Feb. 2, 2009.
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  9. Bell GS, et al. Drowning in people with epilepsy: How great is the risk? Neurology. 2008;71:578.
  10. First aid. Epilepsy Foundation. http://www.epilepsyfoundation.org/about/firstaid/. Accessed Feb. 2, 2009.
  11. Law enforcement/EMS response to seizures. Epilepsy Foundation. http://www.epilepsyfoundation.org/about/professionals/emergency/index.cfm. Accessed Feb. 2, 2009.
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  16. Neurological diagnostic tests and procedures. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/misc/diagnostic_tests.htm. Accessed Feb. 2, 2009.
  17. Living with epilepsy: Tips for living. Epilepsy Foundation. http://www.epilepsyfoundation.org/about/quickstart/newlydiagnosed/qsliving/idvtips.cfm. Accessed Feb. 2, 2009.
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  19. Myoclonus fact sheet. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/myoclonus/detail_myoclonus.htm#105233160. Accessed March 3, 2009.
  20. Stroke: Hope through research. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/stroke/detail_stroke.htm. Accessed March 3, 2009.
  21. Browne TR, et al. Handbook of Epilepsy. 4th ed. Philadelphia, Pa.: Lippincott Williams & Wilkins; 2008:133.
  22. Cancer imaging. National Cancer Institute. http://imaging.cancer.gov/imaginginformation/cancerimaging/. Accessed March 5, 2009.
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  26. Pre-surgical evaluation. Epilepsy Foundation. http://www.epilepsyfoundation.org/about/treatment/surgery/evaluation.cfm. Accessed March 24, 2009.
  27. Spencer SS, et al. Multiple subpial transection for intractable partial epilepsy: An international meta-analysis. Epilepsia. 2002;43:141.
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