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Related Concept Videos

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...
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...
Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
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...
Vascular Spasm01:16

Vascular Spasm

The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last for...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

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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Related Experiment Video

Updated: Jun 10, 2026

Visualizing Impairment of the Endothelial and Glial Barriers of the Neurovascular Unit during Experimental Autoimmune Encephalomyelitis In Vivo
10:50

Visualizing Impairment of the Endothelial and Glial Barriers of the Neurovascular Unit during Experimental Autoimmune Encephalomyelitis In Vivo

Published on: March 26, 2019

Central nervous system vasculitis in children.

Tania Cellucci1, Susanne M Benseler

  • 1Division of Rheumatology, Department of Pediatrics, University of Toronto, Toronto, Canada.

Current Opinion in Rheumatology
|July 31, 2010
PubMed
Summary
This summary is machine-generated.

Childhood primary central nervous system vasculitis (cPACNS) can cause severe neurological and psychiatric symptoms but is reversible. The diagnosis is improving with new insights into inflammatory and noninflammatory brain diseases.

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Related Experiment Videos

Last Updated: Jun 10, 2026

Visualizing Impairment of the Endothelial and Glial Barriers of the Neurovascular Unit during Experimental Autoimmune Encephalomyelitis In Vivo
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Published on: March 26, 2019

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Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain
05:51

Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain

Published on: July 24, 2016

Area of Science:

  • Pediatric Neurology
  • Neuroimmunology
  • Vascular Neurology

Background:

  • Childhood primary central nervous system vasculitis (cPACNS) presents with diverse neurological and psychiatric symptoms.
  • Accurate diagnosis is crucial as cPACNS is a potentially reversible cause of severe deficits.

Purpose of the Study:

  • To review current literature on childhood CNS vasculitis.
  • To evaluate the expanding differential diagnosis of inflammatory and noninflammatory brain diseases in children.

Main Methods:

  • Literature review of childhood primary and secondary CNS vasculitis.
  • Evaluation of diagnostic advancements and differential diagnoses.

Main Results:

  • cPACNS is a reversible condition with distinct subtypes, clinical, and radiological features.
  • Improved diagnostic yield from brain biopsies aids in identifying angiography-negative cPACNS.
  • The differential diagnosis has expanded to include vasoconstrictive and neuronal antibody-associated disorders.

Conclusions:

  • Recent data on cPACNS diagnosis, treatment, and prognosis are summarized.
  • The evolving differential diagnosis for CNS vasculitis in children is addressed.
  • An improved understanding facilitates tailored diagnostic approaches and timely initiation of therapy.