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Related Concept Videos

Encephalitis l: Introduction01:19

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...
Encephalitis ll: Pathophysiology01:26

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...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Acute Pharyngitis01:30

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...

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Related Experiment Video

Updated: Jun 6, 2026

A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease
04:23

A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease

Published on: April 28, 2019

[Acute encephalitis].

J C García-Moncó1

  • 1Servicio de Neurología, Hospital de Galdakao-Usansolo, País Vasco, España. hospit05@sarenet.es

Neurologia (Barcelona, Spain)
|December 7, 2010
PubMed
Summary
This summary is machine-generated.

Acute encephalitis is a serious viral infection requiring immediate medical care. Diagnosis relies on clinical signs, imaging, and cerebrospinal fluid analysis, with PCR being highly accurate for identifying causes like herpes simplex virus.

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Hippocampal Neuronal Cultures to Detect and Study New Pathogenic Antibodies Involved in Autoimmune Encephalitis
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Last Updated: Jun 6, 2026

A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease
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Hippocampal Neuronal Cultures to Detect and Study New Pathogenic Antibodies Involved in Autoimmune Encephalitis

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Virology

Context:

  • Acute encephalitis is a life-threatening neurological condition with diverse viral etiologies.
  • A significant number of cases remain undiagnosed due to the wide range of causative agents.
  • Herpes simplex virus type 1 is the most common cause of sporadic encephalitis globally.

Purpose:

  • To outline the diagnostic challenges and critical management strategies for acute encephalitis.
  • To highlight key diagnostic tools including clinical presentation, neuroimaging, and cerebrospinal fluid analysis.
  • To discuss the role of Polymerase Chain Reaction (PCR) in identifying specific viral pathogens.

Summary:

  • Encephalitis necessitates intensive care, focusing on respiratory support, seizure control, and managing intracranial pressure.
  • Herpes simplex virus encephalitis, with an incidence of 4 per million, is diagnosed using clinical, EEG, MRI, and CSF findings, with PCR offering high sensitivity.
  • Arboviruses, transmitted by ticks and mosquitoes, represent another significant etiological group, requiring serological and PCR-based diagnosis due to the absence of specific treatments.

Impact:

  • Early and accurate diagnosis of encephalitis is crucial for timely and effective treatment, improving patient outcomes.
  • Understanding the diverse etiologies, including herpes simplex virus and arboviruses, aids in targeted therapeutic interventions.
  • Advances in diagnostic techniques like PCR enhance the ability to identify causative agents, guiding treatment decisions and public health strategies.