Book contents
- How to Read an EEG
- Reviews
- How to Read an EEG
- Copyright page
- Dedication
- Contents
- Figure Contributions
- Foreword to the First Edition
- Preface
- How to Read This Book
- Part I Basics
- Part II Interpretation
- Part III Specific Conditions
- Chapter 15 Seizure Mimics
- Chapter 16 Types of Seizures
- Chapter 17 Epilepsy
- Chapter 18 Epilepsy Syndromes
- Chapter 19 Lesions and Encephalopathy
- Chapter 20 Status Epilepticus
- Chapter 21 Postcardiac Arrest
- Appendix: How to Write a Report
- Index
- References
Chapter 17 - Epilepsy
from Part III - Specific Conditions
Published online by Cambridge University Press: aN Invalid Date NaN
Book contents
- How to Read an EEG
- Reviews
- How to Read an EEG
- Copyright page
- Dedication
- Contents
- Figure Contributions
- Foreword to the First Edition
- Preface
- How to Read This Book
- Part I Basics
- Part II Interpretation
- Part III Specific Conditions
- Chapter 15 Seizure Mimics
- Chapter 16 Types of Seizures
- Chapter 17 Epilepsy
- Chapter 18 Epilepsy Syndromes
- Chapter 19 Lesions and Encephalopathy
- Chapter 20 Status Epilepticus
- Chapter 21 Postcardiac Arrest
- Appendix: How to Write a Report
- Index
- References
Summary
Epilepsy is a disorder of recurrent unprovoked (or reflex) seizures, the key to diagnosing epilepsy is estimating the risk of recurrence. Epilepsy may be diagnosed if a patient has two or more seizures at least 24 hours apart, a first-time seizure with factors that increase the risk of recurrence or an epilepsy syndrome. When determining the type of epilepsy, first identify the seizure type(s), then the corresponding epilepsy type. Consider if the epilepsy is potentially syndromic or nonsyndromic. Consider the underlying etiology (structural, genetic, infectious, immune, or metabolic). Focal epilepsies may be classified based on their region of onset: frontal, temporal (mesial/lateral), parietal, occipital, and insular. Ictal and interictal EEG findings vary with the type of focal epilepsy. [123 words/725 characters]
Information
- Type
- Chapter
- Information
- How to Read an EEG , pp. 249 - 258Publisher: Cambridge University PressPrint publication year: 2025
References
Fisher, RS, Acevedo, C, Arzimanoglou, A, et al. ILAE official report: a practical clinical definition of epilepsy. Epilepsia. 2014 Apr;55(4):475–82.CrossRefGoogle ScholarPubMed
Krumholz, A, Wiebe, S, Gronseth, GS, et al. Evidence-based guideline: management of an unprovoked first seizure in adults: report of the Guideline Development Subcommittee of the American Academy of Neurology and the American Epilepsy Society: evidence-based guideline. Epilepsy Currents. 2015 May;15(3):144–52.10.5698/1535-7597-15.3.144CrossRefGoogle Scholar
Fisher, RS, Cross, JH, D’souza, C, et al. Instruction manual for the ILAE 2017 operational classification of seizure types. Epilepsia. 2017 Apr;58(4):531–42.CrossRefGoogle ScholarPubMed
McGonigal, A, Chauvel, P. Frontal lobe epilepsy: seizure semiology and presurgical evaluation. Practical Neurology. 2004 Oct 1;4(5):260–73.CrossRefGoogle Scholar
Marks, WJ Jr, Laxer, KD. Semiology of temporal lobe seizures: value in lateralizing the seizure focus. Epilepsia. 1998 Jul;39(7):721–6.CrossRefGoogle ScholarPubMed
Siegel, AM, Williamson, PD. Parietal lobe epilepsy. Advances in Neurology. 2000;84:189–99.Google ScholarPubMed
Williamson, PD, Thadani, VM, Darcey, TM, et al. Occipital lobe epilepsy: clinical characteristics, seizure spread patterns, and results of surgery. Annals of Neurology. 1992 Jan;31(1):3–13.10.1002/ana.410310103CrossRefGoogle ScholarPubMed
Obaid, S, Zerouali, Y, Nguyen, DK. Insular epilepsy: semiology and noninvasive investigations. Journal of Clinical Neurophysiology. 2017 Jul 1;34(4):315–23.CrossRefGoogle ScholarPubMed
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