Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-25T05:19:44.438Z Has data issue: false hasContentIssue false

Delusional Misidentification of Persons in Dementia

Published online by Cambridge University Press:  02 January 2018

Mario F. Mendez*
Affiliation:
Behavioural Neurology, Department of Neurology, St Paul-Ramsey Medical Center, Jackson at University, St Paul, MN 55101, USA, and Department of Neurology, The University of Minnesota

Abstract

The misidentification of a familiar person or of oneself may occur as a complication of dementia. Seven patients experienced alterations of the sense of familiarity for a familiar object or place, for the misidentified person in a novel role, for personal characteristics, or for unfamiliar events as familiar. Five of these had persecutory delusions. These cases suggest that person misidentification in dementia begins with an altered sense of familiarity for a familiar person from a mismatch of new perceptions with past memories. They are sustained by paranoid elaboration or confabulatory rationalisation of a double.

Type
Brief Reports
Copyright
Copyright © Royal College of Psychiatrists, 1992 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Alexander, M. P., Stuss, D. T. & Benson, D. F. (1979) Capgras syndrome: a reduplicative phenomenon. Neurology, 29, 334339.Google Scholar
Ardila, A. & Rosseli, M. (1988) Temporal lobe involvement in Capgras syndrome. International Journal of Neuroseience, 43, 219224.Google ScholarPubMed
Berson, R. J. (1983) Capgras' syndrome. American Journal of Psychiatry, 140, 969978.Google ScholarPubMed
Burns, A., Jacoby, R. & Levy, R. (1990) Psychiatric phenomena in Alzheimer's disease. II: Disorders of perception. British Journal of Psychiatry, 157, 7681.Google Scholar
Damasio, A. R., Eslinger, P. J., Damasio, H., et al (1985) Multimodal amnesic syndrome following bilateral temporal and basal forebrain damage. Archives of Neurology, 42, 252259.Google Scholar
Kumar, V. (1987) Capgras syndrome in a patient with dementia. British Journal of Psychiatry, 150, 251.Google Scholar
Lipkin, B. (1988) Capgras syndrome heralding the development of dementia. British Journal of Psychiatry, 153, 117118.CrossRefGoogle ScholarPubMed
Signer, S. F. (1987) Capgras' syndrome: the delusion of substitution. Journal of Clinical Psychiatry, 48, 147150.Google ScholarPubMed
Todd, J., Dewhurst, K. & Wallis, G. (1981) The syndrome of Capgras. British Journal of Psychiatry, 139, 319327.Google Scholar
Submit a response

eLetters

No eLetters have been published for this article.