J Korean Neurol Assoc.  2016 Aug;34(3):176-183. 10.17340/jkna.2016.34.3.2.

A Practical Definition of Epilepsy

Affiliations
  • 1Department of Neurology, Gachon University College of Medicine, Incheon, Korea.
  • 2Department of Neurology, Inje University College of Medicine, Busan, Korea. BILEE@paik.ac.kr
  • 3Department of Neurology, Hallym University College of Medicine, Seoul, Korea.

Abstract

In 2005, the ILAE conceptually defined epilepsy as a disorder of the brain, characterized by an enduring predisposition to generate epileptic seizures and by its psychosocial consequences. In clinical practice, this definition of epilepsy is usually taken to mean at least two unprovoked seizures more than 24 h apart. The operational definition for special circumstances that do not meet the criteria of two unprovoked attacks has been recommended. In 2014, the ILAE refined the practical definition of epilepsy. With this definition, epilepsy is a disease of the brain with either: (1) at least two unprovoked (or reflex) seizures occurring more than 24 h apart; (2) one unprovoked (or reflex) seizure and a probability of further seizures similar to the general recurrence risk (at least 60%) after two unprovoked seizures, occurring over the next 10 years; (3) diagnosis of an epilepsy syndrome. Epilepsy is considered to be resolved for individuals past the applicable age of an age-dependent epilepsy syndrome or those who have remained seizure-free for the past 10 years, without seizure medicines for the past 5 years.

Keyword

Epilepsy; Seizure; Definition; Unprovoked; Recurrence

MeSH Terms

Brain
Diagnosis
Epilepsy*
Recurrence
Seizures
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