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Related Concept Videos

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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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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Antiepileptic Drugs: Glutamate Antagonists01:14

Antiepileptic Drugs: Glutamate Antagonists

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Glutamate is a fundamental neurotransmitter in the central nervous system, playing a vital role in neuronal communication and various cognitive processes. Glutamate stands as the principal excitatory neurotransmitter in the brain. Its presence is crucial for the communication between neurons, underpinning essential processes such as synaptic transmission, neuronal excitability, and plasticity. These functions are vital for higher-order cognitive processes, including learning and memory. The...
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Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

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γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for...
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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: Sodium Channel Blockers01:08

Antiepileptic Drugs: Sodium Channel Blockers

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Antiepileptic drugs are specialized medications that prevent seizures in individuals diagnosed with epilepsy. These drugs primarily function by blocking the movement of sodium ions through channels in the neuronal membrane, inhibiting the repetitive firing of action potentials often associated with seizures.
Sodium channel blockers modulate ion channels, particularly voltage-gated sodium channels. They block only sodium ion movement.
Among the most commonly prescribed antiepileptic drugs are...
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Updated: Mar 2, 2026

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
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[Epileptic encephalopathies].

J Ramos-Lizana1

  • 1Hospital Torrecardenas, 04009 Almeria, Espana.

Revista De Neurologia
|May 20, 2017
PubMed
Summary
This summary is machine-generated.

Epileptic encephalopathy describes severe cognitive and behavioral issues caused by epilepsy itself. Distinguishing epilepsy

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Area of Science:

  • Neurology
  • Epileptology
  • Developmental Neuroscience

Background:

  • The term 'epileptic encephalopathy' acknowledges that epileptic activity can independently cause severe cognitive and behavioral disabilities.
  • Defining the precise contribution of epileptic seizures versus underlying pathology to cognitive deficits remains challenging.
  • Certain epileptic syndromes, including West, Lennox-Gastaut, and Dravet syndromes, frequently present with encephalopathic features.

Purpose of the Study:

  • To clarify the concept of epileptic encephalopathy as defined by the ILAE Commission on Classification and Terminology.
  • To highlight the diagnostic challenges in differentiating the impact of seizures from underlying causes on cognitive function.
  • To identify common etiologies associated with epileptic encephalopathy.

Main Methods:

  • Conceptual analysis based on the ILAE Commission's classification and terminology.
  • Review of established epileptic syndromes and their associated cognitive outcomes.
  • Identification of prevalent causes linked to epileptic encephalopathy.

Main Results:

  • Epileptic activity can be a direct contributor to severe cognitive and behavioral impairments.
  • A clear distinction between seizure-related and pathology-related cognitive deficits is often difficult.
  • West, Lennox-Gastaut, and Dravet syndromes are strongly linked to encephalopathic traits.

Conclusions:

  • Epileptic encephalopathy is a recognized concept where seizures exacerbate cognitive and behavioral disabilities.
  • Etiological factors such as hypoxic-ischemic encephalopathy, brain malformations, genetic disorders, tuberous sclerosis, and metabolic diseases are frequently implicated.
  • Further research is needed to better delineate the interplay between epileptic activity and underlying pathologies in cognitive development.