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Related Concept Videos

Hepatic Encephalopathy01:29

Hepatic Encephalopathy

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 shunting—including...
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...
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...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Huntington Disease l: Introduction01:21

Huntington Disease l: Introduction

Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show reduced penetrance,...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...

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Related Experiment Video

Updated: May 15, 2026

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
08:47

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia

Published on: November 19, 2008

[Hashimoto's encephalopathy].

M A Anikina, O B Murav'ev, A S Sotnikov

    Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova
    |December 20, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Hashimoto's encephalopathy, an autoimmune brain disease, presents diverse symptoms mimicking other neurological disorders. Early diagnosis is crucial for effective treatment with corticosteroids and immunotropic drugs.

    Related Experiment Videos

    Last Updated: May 15, 2026

    The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
    08:47

    The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia

    Published on: November 19, 2008

    Area of Science:

    • Neurology
    • Immunology
    • Endocrinology

    Background:

    • Hashimoto's encephalopathy is an autoimmune inflammatory brain disease linked to antithyroid antibodies.
    • It presents a diagnostic challenge due to varied clinical manifestations resembling neurological and psychiatric conditions.

    Observation:

    • This case highlights the diverse presentations of Hashimoto's encephalopathy.
    • The study emphasizes the difficulties in diagnosing this condition accurately.

    Findings:

    • Diagnostic criteria are presented to prevent both underdiagnosis and overdiagnosis.
    • Timely diagnosis is critical for managing this severe yet treatable neurological disorder.

    Implications:

    • Accurate diagnostic criteria are essential for appropriate patient management.
    • Effective treatment strategies involve corticosteroids and other immunotropic medications.
    • Understanding the varied clinical spectrum aids in early detection and intervention.