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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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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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Alterations in Muscle Tone lll

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Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
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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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Hepatic Encephalopathy01:29

Hepatic Encephalopathy

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DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic...
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The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
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[Abdominal pain in progressive encephalomyelitis with rigidity].

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PubMed
Summary

Progressive encephalomyelitis with rigidity and myoclonus (PERM) is a rare neurological disorder. Early diagnosis is crucial, aided by antineuropile antibodies and electromyogram findings, despite varied presentations.

Keywords:
Abdominal painAuto immunitéAutoimmunityDouleur abdominaleEncephalomyelitisEncéphalomyéliteRigidityRigidité

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Area of Science:

  • Neurology
  • Immunology

Background:

  • Stiff-person syndrome is a rare neurological disorder characterized by trunk rigidity and painful muscle spasms.
  • Progressive encephalomyelitis with rigidity and myoclonus (PERM) is a clinical variant of stiff-person syndrome, encompassing neurological and cognitive disturbances.

Observation:

  • A 73-year-old woman presented with abdominal pain, anorexia, and significant weight loss.
  • The patient was diagnosed with progressive encephalomyelitis with rigidity and myoclonus (PERM).

Findings:

  • Diagnosis of PERM can be delayed due to diverse clinical presentations, sometimes lacking overt neurological signs.
  • The presence of antineuropile antibodies combined with electromyogram-confirmed muscular spasms strongly supports a PERM diagnosis.

Implications:

  • Recognizing the varied presentations of PERM is essential for timely diagnosis and management.
  • Antineuropile antibodies and EMG are key diagnostic biomarkers for PERM, improving patient outcomes.