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Seizures: Classification

Seizures: Classification

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:

Seizures l: Introduction

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...

Seizures ll: Types

Seizures ll: Types

Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...

Epilepsy ll: Types

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.

Epilepsy and Seizures: Overview

Epilepsy and Seizures: Overview

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...

Antiepileptic Drugs: Glutamate Antagonists

Antiepileptic Drugs: Glutamate Antagonists

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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Related Experiment Video

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Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Published on: September 20, 2024

Psychogenic nonepileptic seizures.

Richard J Brown¹, Tanvir U Syed, Selim Benbadis

¹Division of Clinical Psychology, University of Manchester, Manchester, UK.

Epilepsy & Behavior : E&B

|April 1, 2011

Summary

This summary is machine-generated.

Recent research on psychogenic nonepileptic seizures (PNES) shows progress in diagnosis and treatment. Empirically testable models are emerging, but understanding PNES aetiology and ensuring long-term treatment effectiveness requires further investigation.

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Area of Science:

Neurology
Psychiatry
Clinical Psychology

Background:

Psychogenic nonepileptic seizures (PNES) present diagnostic challenges, with common delays and misdiagnoses.
Non-specific electroencephalogram (EEG) findings are frequently misinterpreted as epilepsy.
Understanding PNES symptomatology is crucial for accurate diagnosis.

Purpose of the Study:

To review recent advancements in psychogenic nonepileptic seizures (PNES).
To identify key priorities for future PNES research.
To highlight emerging empirically testable models of PNES.

Main Methods:

Review of current literature on PNES.
Analysis of diagnostic techniques, including Video-EEG and self-report questionnaires.
Evaluation of psychological treatment approaches for PNES.

Main Results:

Video-EEG aids in securing PNES diagnoses, yet diagnostic delays persist.
Self-report questionnaires show potential for earlier and more accurate PNES diagnosis.
A pilot randomized controlled trial (RCT) indicated short-term effectiveness of psychological treatment for PNES.

Conclusions:

Further research is needed to fully elucidate the aetiology of PNES.
Improving diagnostic accuracy and reducing delays in PNES are critical.
Longer-term effectiveness of psychological interventions for PNES requires further demonstration.