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Related Experiment Videos

Delusional misidentification, AIDS and the right hemisphere.

P Crichton1, S Lewis

  • 1Department of Psychiatry, Charing Cross Hospital, London.

The British Journal of Psychiatry : the Journal of Mental Science
|October 1, 1990
PubMed
Summary

This study details a patient with Acquired Immunodeficiency Syndrome (AIDS) who experienced Capgras syndrome due to an opportunistic infection. Findings suggest that visuospatial deficits, particularly in facial recognition, may cause this delusion.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Infectious Diseases

Background:

  • Capgras syndrome is a rare delusional misidentification, often associated with neurological or psychiatric conditions.
  • Opportunistic infections in patients with Acquired Immunodeficiency Syndrome (AIDS) can lead to complex neuropsychiatric manifestations.

Observation:

  • A patient diagnosed with AIDS presented with an acute confusional state and developed Capgras syndrome.
  • Neuropsychological assessments indicated dysfunction in the non-dominant hemisphere, specifically affecting facial recognition abilities.

Findings:

  • Serial computed tomography (CT) scans revealed a lesion in the right parietal lobe.
  • The lesion resolved concurrently with the improvement of the patient's psychosis and Capgras syndrome.

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Implications:

  • These results support the hypothesis linking visuospatial processing deficits to the etiology of Capgras syndrome.
  • The case highlights the importance of considering opportunistic infections as a cause of neuropsychiatric symptoms in AIDS patients.