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Cognitive impairments may mimic delusions.

Marija Eterović1, Dragica Kozarić-Kovačić1

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Cognitive deficits can mimic delusions, leading to misdiagnosis as psychosis. Recognizing pseudo-delusions caused by cognitive decline is crucial for appropriate treatment.

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Area of Science:

  • Psychopathology
  • Cognitive Neuroscience
  • Geriatric Psychiatry

Background:

  • Delusions are central to psychosis, defined by strong beliefs despite contrary evidence.
  • Current understanding often overlooks the role of individual cognitive capacities in delusion formation.
  • The impact of cognitive decline on delusions remains underexplored in theory and practice.

Purpose of the Study:

  • To investigate how cognitive deficits influence the formation and perception of delusions.
  • To introduce and define the concept of "pseudo-delusions" arising from cognitive impairment.
  • To highlight the risk of misdiagnosing cognitive decline as delusions, particularly in the elderly.

Main Methods:

  • Conceptual analysis of delusion definitions and cognitive capacity.
  • Distinguishing between true delusions and pseudo-delusions based on cognitive status.
  • Reviewing clinical observations and potential biases in diagnosing elderly patients.

Main Results:

  • Cognitive deficits can facilitate, oppose, or mimic delusions.
  • Pseudo-delusions are beliefs that appear delusional but are explained by cognitive impairment.
  • Misdiagnosing pseudo-delusions as true delusions can lead to inappropriate antipsychotic treatment.

Conclusions:

  • Cognitive impairment is a critical factor that can lead to pseudo-delusions.
  • Accurate diagnosis requires considering the individual's cognitive status.
  • Focusing on underlying cognitive deficits, rather than solely on antipsychotics, is essential for effective treatment.