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Related Concept Videos

Epilepsy and Seizures: Overview01:24

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...
Seizures l: Introduction01:20

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,...
Epilepsy ll: Types01:22

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: Classification01:13

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 ll: Types01:19

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...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...

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Related Experiment Video

Updated: May 13, 2026

Generation and On-Demand Initiation of Acute Ictal Activity in Rodent and Human Tissue
06:45

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Published on: January 19, 2019

Seven questions about stroke and epilepsy.

Thomas P Bleck1

  • 1Professor of Neurological Sciences, Neurosurgery, Internal Medicine, and Anesthesiology, Rush Medical College, Chicago, IL ; Associate Chief Medical Officer (Critical Care), Rush University Medical Center, Chicago, IL.

Epilepsy Currents
|March 1, 2013
PubMed
Summary

Seizures occurring with stroke raise concerns for both stroke specialists and epileptologists. Understanding this complex relationship is crucial, as subclinical seizures and certain anticonvulsants can impact stroke outcomes.

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Area of Science:

  • Neurology
  • Stroke Medicine
  • Epileptology

Background:

  • Seizures and stroke are common neurologic conditions.
  • Their co-occurrence raises significant clinical concerns beyond individual conditions.
  • Potential for seizures to exacerbate stroke and for stroke to lead to epilepsy exists.

Purpose of the Study:

  • To survey the connections between seizures and stroke.
  • To address key questions regarding their relationship.
  • To clarify data-driven answers versus expert opinions.

Main Methods:

  • Literature review and synthesis of existing data.
  • Analysis of clinical concerns from stroke and epilepsy perspectives.
  • Evaluation of the impact of subclinical seizures and anticonvulsants.

Main Results:

  • Concerns include stroke worsening due to seizures (hypertension, airway compromise).
  • Epileptologists worry about acute seizures heralding future epilepsy.
  • Subclinical seizures may worsen stroke; some anticonvulsants pose risks.

Conclusions:

  • The relationship between seizures and stroke is complex and multifactorial.
  • Further research is needed to resolve uncertainties.
  • Clinical management requires careful consideration of both conditions.