Acta Neurologica Belgica

, Volume 118, Issue 2, pp 187–191 | Cite as

Uncommon and/or bizarre features of dementia. Part II

  • Gabriele Cipriani
  • Sabrina Danti
  • Angelo Nuti
  • Claudio Lucetti
  • Mario Di Fiorino


In the past decades, clinicians have recognized that dementia may appear as atypical or variant syndromes, as well as the typical form. This study aimed at describing uncommon or bizarre symptoms/syndromes observed in patients suffering from dementia. Medline and Google scholar searches were conducted for relevant articles, chapters, and books published before 2017. Search terms used included delusional jealousy, delusion of pregnancy, dementia, erotomania, folie à deux, and lycanthropy. Publications found through this indexed search were reviewed for further relevant references. The uncommon symptoms/syndromes were described as case reports and there were no systematic investigations.


Delusional jealousy Delusion of pregnancy Dementia Erotomania Folie à deux Lycanthropy 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

For this type of study, formal consent is not required.


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Copyright information

© Belgian Neurological Society 2018

Authors and Affiliations

  • Gabriele Cipriani
    • 1
    • 3
  • Sabrina Danti
    • 4
  • Angelo Nuti
    • 2
  • Claudio Lucetti
    • 2
  • Mario Di Fiorino
    • 3
  1. 1.Department of NeurologyVersilia HospitalLido Di CamaioreItaly
  2. 2.Department of PsychologyPontedera HospitalPontederaItaly
  3. 3.Department of PsychiatryVersilia HospitalLido Di CamaioreItaly
  4. 4.Clinical and Health Psychology UnitPontedera HospitalPontederaItaly

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