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Related Concept Videos

Seizures: Classification01:13

Seizures: Classification

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Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
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Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
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Prevalence and Incidence01:08

Prevalence and Incidence

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In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...
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Antiepileptic Drugs: Potassium Channel Activators01:20

Antiepileptic Drugs: Potassium Channel Activators

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Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
Ezogabine has gained approval as an adjunctive treatment...
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Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein01:20

Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein

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Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Related Experiment Video

Updated: Nov 15, 2025

Behavioral Characterization of Pentylenetetrazole-induced Seizures: Moving Beyond the Racine Scale
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Behavioral Characterization of Pentylenetetrazole-induced Seizures: Moving Beyond the Racine Scale

Published on: July 8, 2025

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Seizure Clusters: Morbidity and Mortality.

Kristie Bauman1, Orrin Devinsky1

  • 1Department of Neurology, NYU Grossman School of Medicine and NYU Langone Comprehensive Epilepsy Center, New York, NY, United States.

Frontiers in Neurology
|March 5, 2021
PubMed
Summary
This summary is machine-generated.

Seizure clusters increase the risk of sudden unexplained death in epilepsy (SUDEP) by 2.5 times. Understanding seizure frequency and duration is key to preventing SUDEP and improving epilepsy care.

Keywords:
SUDEP (sudden unexplained death in epilepsy)morbiditymortalityseizureseizure cluster

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Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
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A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy
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Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
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A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy
06:58

A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy

Published on: July 12, 2021

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Area of Science:

  • Neurology
  • Epilepsy Research
  • Sudden Death Research

Background:

  • Seizure clusters represent a critical intermediate state between single seizures and status epilepticus.
  • These clusters are linked to significant patient morbidity, reduced quality of life, and increased mortality.
  • The specific association between seizure clusters and sudden unexplained death in epilepsy (SUDEP) remains inadequately defined.

Purpose of the Study:

  • To define seizure clusters in the context of epilepsy.
  • To review comorbidities, including psychiatric disorders and memory deficits, associated with seizure clusters.
  • To examine the relationship between seizure clusters and SUDEP by reviewing witnessed SUDEP cases with available pre-death seizure frequency data.

Main Methods:

  • Literature review defining seizure clusters.
  • Review of comorbid psychiatric and cognitive deficits linked to seizure clusters.
  • Analysis of witnessed SUDEP cases, focusing on pre-death seizure frequency and seizure types.

Main Results:

  • Patients with a history of seizure clusters exhibit a 2.5-fold elevated risk of SUDEP.
  • Approximately one-third of in-hospital SUDEP cases involved a preceding cluster of generalized tonic-clonic seizures.
  • Seizure clusters are significantly associated with an increased risk of SUDEP.

Conclusions:

  • A history of seizure clusters is a significant risk factor for SUDEP.
  • Further investigation into the impact of seizure frequency and duration on SUDEP risk is warranted.
  • Identifying the effects of seizure patterns on SUDEP pathophysiology may reveal novel intervention targets.