Revisiting Criteria for Psychosis in Alzheimer's Disease and Related Dementias: Toward Better Phenotypic Classification and Biomarker Research

Corinne E. Fischer, Zahinoor Ismail, James M. Youakim, Byron Creese, Sanjeev Kumar, Nicolas Nuñez, R. Ryan Darby, Antonella Di Vita, Fabrizia D'Antonio, Carlo de Lena, William J. McGeown, Ravona Ramit, Jill Rasmussen, Joanne Bell, Huali Wang, Marie Andrée Bruneau, Peter K. Panegyres, Krista L. Lanctôt, Luis Agüera-Ortiz, Constantine LyketsosJeffrey Cummings, Dilip V. Jeste, Mary Sano, D. P. Devanand, Robert A. Sweet, Clive Ballard

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


BACKGROUND: Psychotic symptoms are common in Alzheimer's disease (AD) and related neurodegenerative disorders and are associated with more rapid disease progression and increased mortality. It is unclear to what degree existing criteria are utilized in clinical research and practice. OBJECTIVE: To establish research criteria for the diagnosis of psychosis in AD. METHODS: The International Society to Advance Alzheimer's Research and Treatment (ISTAART) Neuropsychiatric Symptoms (NPS) Professional Interest Area (PIA) psychosis subgroup reviewed existing criteria for psychosis in AD and related dementias. Through a series of in person and on-line meetings, a priority checklist was devised to capture features necessary for current research and clinical needs. PubMed, Medline and other relevant databases were searched for relevant criteria. RESULTS: Consensus identified three sets of criteria suitable for review including those of Jeste and Finkel, Lyketsos, and the Diagnostic and Statistical Manual for Mental Disorders, 5th edition. It was concluded that existing criteria could be augmented by including a more specific differentiation between delusions and hallucinations, address overlap with related conditions (agitation in particular), adding the possibility of symptoms emerging in the preclinical and prodromal phases, and building on developing research in disease biomarkers. CONCLUSION: We propose criteria, developed to improve phenotypic classification of psychosis in AD, and advance the research agenda in the field to improve epidemiological, biomarker, and genetics research in the field. These criteria serve as a complement to the International Psychogeriatric Association criteria for psychosis in neurocognitive disorders.

Original languageEnglish
Pages (from-to)1143-1156
Number of pages14
JournalJournal of Alzheimer's Disease
Issue number3
StatePublished - 2020


  • Alzheimer’s disease
  • criteria
  • delusions
  • hallucinations
  • mild cognitive impairment
  • psychosis


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