{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T13:46:10Z","timestamp":1793108770685,"version":"4.5.0"},"reference-count":48,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T00:00:00Z","timestamp":1656374400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>The theme, strength, and duration of a delusion are considered important in distinguishing one psychosis of old age from another. Research results, however, are mostly based on studies conducted on one form of psychosis, namely schizophrenia. The aim of this hypothesis-driven narrative review is to gather clinically important information about the psychosis identified as delusional disorder (DD), as it affects persons of senior age. We hypothesized that DD becomes relatively prevalent in old age, especially in women; and that it is associated with demonstrable brain changes, which, in turn, are associated with cognitive defects and poor pharmacological response, thus increasing the risk of aggression and suicide. Computerized searches in PubMed and ClinicalTrials.gov were conducted using the following search terms: (delusional disorder) AND (elderly OR old OR aged OR psychogeriatrics). A total of 16 recent studies (including case reports) were reviewed. Our hypotheses could not be definitively confirmed because research evidence is lacking. In order to improve eventual outcomes, our literature search demonstrates the need for more targeted, well-designed studies.<\/jats:p>","DOI":"10.3390\/ijerph19137911","type":"journal-article","created":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T23:59:22Z","timestamp":1656460762000},"page":"7911","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Delusional Disorder in Old Age: A Hypothesis-Driven Review of Recent Work Focusing on Epidemiology, Clinical Aspects, and Outcomes"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1855-8566","authenticated-orcid":false,"given":"Alexandre","family":"Gonz\u00e1lez-Rodr\u00edguez","sequence":"first","affiliation":[{"name":"Department of Mental Health, Mutua Terrassa University Hospital, 5 Dr Robert Square, 08221 Terrassa, Spain"},{"name":"University of Barcelona, CIBERSAM, 08221 Terrassa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6797-3382","authenticated-orcid":false,"given":"Mary V.","family":"Seeman","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, University of Toronto, 605 260 Heath Street West, Toronto, ON M5T 1R8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eduard","family":"Izquierdo","sequence":"additional","affiliation":[{"name":"Department of Mental Health, Mutua Terrassa University Hospital, 5 Dr Robert Square, 08221 Terrassa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mentxu","family":"Natividad","sequence":"additional","affiliation":[{"name":"Department of Mental Health, Mutua Terrassa University Hospital, 5 Dr Robert Square, 08221 Terrassa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Armand","family":"Gu\u00e0rdia","sequence":"additional","affiliation":[{"name":"Department of Mental Health, Mutua Terrassa University Hospital, 5 Dr Robert Square, 08221 Terrassa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elo\u00efsa","family":"Rom\u00e1n","sequence":"additional","affiliation":[{"name":"Department of Mental Health, Mutua Terrassa University Hospital, 5 Dr Robert Square, 08221 Terrassa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0906-927X","authenticated-orcid":false,"given":"Jos\u00e9 A.","family":"Monreal","sequence":"additional","affiliation":[{"name":"Department of Mental Health, Mutua Terrassa University Hospital, 5 Dr Robert Square, 08221 Terrassa, Spain"},{"name":"University of Barcelona, CIBERSAM, 08221 Terrassa, Spain"},{"name":"Institut de Neuroci\u00e8ncies, UAB, 08221 Terrassa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"164","DOI":"10.1016\/j.schres.2019.04.027","article-title":"An empirical study of five sets of diagnostic criteria for delusional disorder","volume":"209","author":"Peralta","year":"2019","journal-title":"Schizophr. 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