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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...
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...
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...
Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
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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...

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Related Experiment Video

Updated: Jul 10, 2026

Portable Thermographic Screening for Detection of Acute Wallenberg's Syndrome
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Published on: September 19, 2019

Wernicke-Korsakoff encephalopathy.

J M S Pearce1

  • 1Emeritus Consultant Neurologist, Department of Neurology, Hull Royal Infirmary and Hull York Medical School, Hull, UK.

European Neurology
|October 16, 2007
PubMed
Summary

This study reviews Wernicke-Korsakoff syndrome, a neurological condition often linked to alcoholism, characterized by confusion, ataxia, and memory issues. It highlights earlier historical descriptions of the syndrome by key medical figures.

Area of Science:

  • Neurology
  • Neuroscience
  • Medical History

Background:

  • Wernicke-Korsakoff syndrome is a severe neurological disorder.
  • It is primarily associated with chronic alcoholism and thiamine deficiency.
  • Key symptoms include confusion, ataxia, ophthalmoplegia, amnesia, and confabulation.

Discussion:

  • This paper examines the seminal work of Wernicke and Korsakoff in defining the syndrome.
  • It analyzes the clinical and pathological findings described by Wernicke, including polioencephalitis haemorrhagica superioris.
  • Korsakoff's contribution, emphasizing confabulation and amnesia in alcoholic patients, is also discussed.

Key Insights:

  • The syndrome is characterized by a distinct set of neurological and cognitive deficits.
  • Alcohol abuse is a primary risk factor, leading to thiamine deficiency.

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Last Updated: Jul 10, 2026

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  • Historical accounts reveal early recognition of similar conditions before formal syndrome definition.

    • Outlook:

    • Further research into the precise neuropathological mechanisms is warranted.
    • Understanding the historical context aids in appreciating the evolution of neurological diagnostics.
    • Continued focus on prevention and treatment strategies for thiamine-deficient encephalopathies is crucial.