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The term "psychosis" refers to a spectrum of mental disorders characterized by abnormal thoughts, perceptions, and behaviors. It can manifest as mood disorders, dementia, delirium with psychotic features, substance-induced psychosis with psychotic features, brief psychotic disorder, delusional disorder, schizoaffective disorder, and schizophrenia. Among all these disorders, schizophrenia is the most common psychotic disorder, affecting 1% of the worldwide population. Psychotic symptoms in all...
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Related Experiment Video

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Symmetric Bihemispheric Postmortem Brain Cutting to Study Healthy and Pathological Brain Conditions in Humans
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Published on: December 18, 2016

Dementia associated with psychiatric disorders.

John O'Brien1

  • 1Wolfson Research Centre, Institute for Ageing and Health, Newcastle General Hospital, Westgate Road, Newcastle upon Tyne NE4 6BE, UK. j.t.o'brien@ncl.ac.uk

International Psychogeriatrics
|October 22, 2005
PubMed
Summary

Cognitive deficits are common in functional psychiatric disorders like schizophrenia and depression. This review examines their impact, course, and links to dementia, offering insights into brain function.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Science

Background:

  • Functional psychiatric disorders frequently present with cognitive deficits.
  • These impairments can range from mild to severe, impacting daily functioning.
  • Understanding these deficits is crucial for patient outcomes.

Purpose of the Study:

  • To review the cognitive profiles in schizophrenia, depression, bipolar, and anxiety disorders.
  • To examine the longitudinal course and clinical outcomes of cognitive impairment.
  • To discuss potential mechanisms and links to dementia.

Main Methods:

  • Literature review of studies on cognitive function in psychiatric disorders.
  • Analysis of cognitive profiles across different diagnostic groups.
  • Exploration of etiological factors and neurobiological underpinnings.

Main Results:

  • Patients with schizophrenia, depression, bipolar, and anxiety disorders exhibit distinct cognitive deficits.
  • Cognitive impairment often follows a chronic course, influencing long-term prognosis.
  • Shared mechanisms may underlie cognitive deficits in psychiatric disorders and dementia.

Conclusions:

  • Cognitive impairment is a core feature of several functional psychiatric disorders.
  • Further research into underlying mechanisms could reveal therapeutic targets.
  • Investigating the relationship with dementia may provide novel insights into brain health.