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Related Concept Videos

Arboviral Encephalitis01:25

Arboviral Encephalitis

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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...
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Bacterial Meningitis I: Introduction01:22

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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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Bacterial Meningitis II: Pathophysiology01:26

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Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
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Encephalitis l: Introduction01:19

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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...
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Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

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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...
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Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

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A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial...
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Induction and Clinical Scoring of Chronic-Relapsing Experimental Autoimmune Encephalomyelitis
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Development of Severity Classification Criteria for Acute Neuro-Behçet's Disease.

Shunsei Hirohata1,2,3, Hirotoshi Kikuchi3, Tetsuji Sawada4

  • 1Department of Rheumatology, Nobuhara Clinic, Japan.

Internal Medicine (Tokyo, Japan)
|June 11, 2025
PubMed
Summary

New severity criteria for acute neuro-Behçet's disease (ANB) help guide treatment. Higher severity scores correlate with poorer outcomes, aiding clinical decisions for ANB patients.

Keywords:
Behçet's diseaseacute typeneurological involvementseverity classificationtreatment

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Area of Science:

  • Neurology
  • Immunology
  • Rheumatology

Background:

  • Existing guidelines lack specific criteria for treating acute neuro-Behçet's disease (ANB).
  • A need exists for objective measures to classify ANB severity and guide therapeutic interventions.

Purpose of the Study:

  • To develop and validate novel severity classification criteria for acute neuro-Behçet's disease (ANB).
  • To establish criteria that correlate with treatment intensity and patient outcomes.

Main Methods:

  • Retrospective analysis of 61 ANB patients meeting international criteria.
  • Development of a treatment intensity score (TIS) based on treatment details, including glucocorticoid (GC) dosage.
  • Correlation of TIS with neurological symptoms, cerebrospinal fluid findings, brain MRI, and recovery from attacks.

Main Results:

  • A higher TIS was significantly associated with worse recovery from acute attacks.
  • TIS correlated with focal brain symptoms and MRI T2 high-intensity areas.
  • Established ANB severity criteria (stage 1-4) showed significant correlation with poorer recovery and increased GC/immunosuppressant use.

Conclusions:

  • The novel ANB severity classification criteria may aid in determining appropriate treatment strategies.
  • These criteria provide an objective measure for assessing disease severity and predicting outcomes in ANB.