Related Experiment Video
Updated: May 19, 2026

05:33
A Model for Epilepsy of Infectious Etiology using Theiler's Murine Encephalomyelitis Virus
Published on: June 23, 2022
Seizures and encephalitis: clinical features, management, and potential pathophysiologic mechanisms
Benedict D Michael1, Tom Solomon
1Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Epilepsia
|September 6, 2012
Summary
Encephalitis, a brain inflammation often from viral infections, is a significant cause of seizures and epilepsy. This review covers its definition, causes like herpes simplex virus and Japanese encephalitis virus, and management strategies.
Area of Science:
- Neurology
- Infectious Diseases
- Epileptology
Background:
- Encephalitis, characterized by brain inflammation, frequently stems from viral infections.
- It represents a critical cause of acute symptomatic seizures and subsequent epilepsy.
- Understanding encephalitis's role in seizure disorders is crucial for patient outcomes.
Purpose of the Study:
- To define and review the epidemiology and etiology of encephalitis as a cause of seizures.
- To focus on specific viral causes, including herpes simplex virus and Japanese encephalitis virus.
- To discuss antibody-associated encephalitis and emerging etiologies like human herpesvirus 6.
Main Methods:
- Literature review focusing on encephalitis and seizures.
- Analysis of epidemiological data and etiological factors.
- Discussion of clinical management and pathophysiological mechanisms.
Main Results:
- Encephalitis is a key cause of acute seizures and epilepsy.
- Herpes simplex virus and Japanese encephalitis virus are prominent viral etiologies.
- Antibody-associated encephalitis and human herpesvirus 6 are increasingly recognized.
Conclusions:
- Encephalitis presents a significant etiological factor for seizures and epilepsy.
- Comprehensive management strategies are vital for acute and long-term care.
- Continued research into novel etiologies like HHV-6 is warranted.
Related Concept Videos
Encephalitis ll: Pathophysiology
Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Encephalitis l: Introduction
Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
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...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
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: 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 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:
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.

