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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...

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.

Seizures l: Introduction

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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,...

Psychosurgery

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Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
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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.
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Focal Seizures
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Related Experiment Video

Updated: Jun 25, 2026

Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study

Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study

Published on: August 15, 2025

Epilepsy surgery: a critical review.

Soheyl Noachtar¹, Ingo Borggraefe

¹Epilepsy Center, Department of Neurology, University of Munich, Munich, Germany. noa@med.uni-muenchen.de

Epilepsy & Behavior : E&B

|February 25, 2009

Summary

Epilepsy surgery aims to control seizures and improve quality of life for patients with drug-resistant epilepsy. Accurate diagnosis and localization of the epileptogenic zone are crucial for successful surgical outcomes.

Area of Science:

Neurology
Neurosurgery
Epileptology

Background:

Medically intractable epilepsy significantly impacts patient quality of life.
Surgical intervention is a viable option for select patients with drug-resistant epilepsy.
Accurate diagnosis and localization are paramount for successful epilepsy surgery.

Purpose of the Study:

To review diagnostic methods for patient selection in epilepsy surgery.
To discuss factors influencing surgical outcomes in epilepsy.
To critically analyze reasons for epilepsy surgery failure.

Main Methods:

Review of diagnostic modalities for epilepsy surgery.
Evaluation of patient selection criteria.
Discussion of surgical outcomes and failure analysis.

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Last Updated: Jun 25, 2026

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Main Results:

Confirmation of epilepsy diagnosis and medical intractability are essential prerequisites.
Exclusion of nonepileptic events and verification of adequate drug trials are mandatory.
Diagnostic evaluation is key to localizing the epileptogenic zone for optimal surgical planning.

Conclusions:

Epilepsy surgery offers potential for seizure control and improved quality of life.
Careful patient selection based on thorough diagnostic evaluation is critical.
Understanding reasons for surgical failure can guide future treatment strategies.