Epilepsy eeg: Difference between revisions

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== Overview ==
== Overview ==
An ECG may be helpful in the diagnosis of epilepsy. Findings on an [[EEG]] suggestive of epilepsy include: Synchronous generalized spikes and waves in all leads in [[Tonic-clonic seizure|tonic-clonic seizures]], spike and wave activity at a frequency of approximately 3 HZ in [[Absence seizure|absence seizures]], localized epileptic activity over the seizure focus in [[focal seizures]] with intact [[consciousness]] and [[temporal]] slow waves or spikes in [[focal seizures]] with impaired [[consciousness]].
An [[EEG]] may be helpful in the diagnosis of epilepsy. Findings on an [[EEG]] suggestive of epilepsy include synchronous generalized spikes and waves in all leads in [[Tonic-clonic seizure|tonic-clonic seizures]], spike and wave activity at a frequency of approximately 3 HZ in [[Absence seizure|absence seizures]], localized epileptic activity over the [[seizure]] focus in [[focal seizures]] with intact [[consciousness]] and [[temporal]] slow waves or spikes in [[focal seizures]] with impaired [[consciousness]].


== Electroencephalogram ==
== Electroencephalogram ==
An ECG may be helpful in the diagnosis of epilepsy. Findings on an [[EEG]] suggestive of epilepsy include:<ref name=":0">{{cite book | last = Mattle | first = Heinrich | title = Fundamentals of neurology : an illustrated guide | publisher = Thieme | location = Stuttgart New York | year = 2017 | isbn = 9783131364524 }}</ref>
An [[EEG]] may be helpful in the diagnosis of epilepsy. Findings on an [[EEG]] suggestive of epilepsy include:<ref name=":0">{{cite book | last = Mattle | first = Heinrich | title = Fundamentals of neurology : an illustrated guide | publisher = Thieme | location = Stuttgart New York | year = 2017 | isbn = 9783131364524 }}</ref>




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{{Family tree | | | | | | | | B01 | | | | | | B02 | | | | | | B01=Generalized|B02=Focal}}
{{Family tree | | | | | | | | B01 | | | | | | B02 | | | | | | B01=Generalized|B02=Focal}}
{{Family tree | | | | | | |,|-|^|-|.| | | |,|-|^|-|.| | | | | }}
{{Family tree | | | | | | |,|-|^|-|.| | | |,|-|^|-|.| | | | | }}
{{Family tree | | | | | | C01 | | C02 | | C03 | | C04 | | | | C01=Tonic–Clonic Seizures|C02=Absences|C03=Focal Seizures without
{{Family tree | | | | | | C01 | | C02 | | C03 | | C04 | | | | C01=[[Tonic–clonic Seizure]]|C02=Absences|C03=Focal seizures without
Altered Consciousness|C04=Focal Seizures with Altered
altered consciousness|C04=[[Focal seizures]] with altered
Consciousness}}
[[consciousness]]}}
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{{Family tree | | | | | | |!| | | |!| | | |!| | | |!| | | | | }}
{{Family tree | | | | | | D01 | | D02 | | D04 | | D05 | | | | D01=synchronous generalized
{{Family tree | | | | | | D01 | | D02 | | D04 | | D05 | | | | D01=Synchronous generalized
spikes and waves in all leads|D02=bursts of synchronous, generalized
spikes and waves in all leads|D02=Bursts of synchronous, generalized
spike-and-wave activity at a frequency of approximately
spike-and-wave activity at a frequency of approximately
3 Hz|D04=localized epileptic activity over the seizure
3 Hz|D04=Localized epileptic activity over the seizure
focus|D05=temporal slow waves or spikes. In
focus|D05=[[Temporal]] slow waves or spikes. In
the interictal period/Normal EGG}}
the interictal period/Normal [[EEG]]}}
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Latest revision as of 21:37, 29 July 2020

Epilepsy Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Epilepsy from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

Diagnostic Study of Choice

History and Symptoms

Physical Examination

Laboratory Findings

EEG

X Ray

CT

MRI

Echocardiography or Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Fahimeh Shojaei, M.D.

Overview

An EEG may be helpful in the diagnosis of epilepsy. Findings on an EEG suggestive of epilepsy include synchronous generalized spikes and waves in all leads in tonic-clonic seizures, spike and wave activity at a frequency of approximately 3 HZ in absence seizures, localized epileptic activity over the seizure focus in focal seizures with intact consciousness and temporal slow waves or spikes in focal seizures with impaired consciousness.

Electroencephalogram

An EEG may be helpful in the diagnosis of epilepsy. Findings on an EEG suggestive of epilepsy include:[1]


 
 
 
 
 
 
 
 
 
 
 
Epilepsy
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Generalized
 
 
 
 
 
Focal
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Tonic–clonic Seizure
 
Absences
 
Focal seizures without altered consciousness
 
Focal seizures with altered consciousness
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Synchronous generalized spikes and waves in all leads
 
Bursts of synchronous, generalized

spike-and-wave activity at a frequency of approximately

3 Hz
 
Localized epileptic activity over the seizure focus
 
Temporal slow waves or spikes. In the interictal period/Normal EEG
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

NOTE: Video-EEG monitoring is a combination of recording EEG and clinical behavior of the patient. Although, it's it's more expensive, it is more effective in differentiating different type if seizures.[2]

Transferred from en.wikipedia to Commons by Sreejithk2000 using CommonsHelper.
Generalized 3 Hz spike and wave discharges in a child with childhood absence epilepsy/Uploaded from the German Wikipedia, uploaded into the German Wikipedia by Der Lange 11/6/2005, created by himself. http://commons.wikimedia.org/w/index.php?title=File:Spike-waves.png&action=edit&section=2

References

  1. Mattle, Heinrich (2017). Fundamentals of neurology : an illustrated guide. Stuttgart New York: Thieme. ISBN 9783131364524.
  2. Worrell GA, Lagerlund TD, Buchhalter JR (September 2002). "Role and limitations of routine and ambulatory scalp electroencephalography in diagnosing and managing seizures". Mayo Clin. Proc. 77 (9): 991–8. doi:10.4065/77.9.991. PMID 12233935.

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