Delusional disorder
MONDO:0004359A disorder characterized by the presence of one or more nonbizarre delusions that persist for at least 1 month; the delusion(s) are not due to schizophrenia or a mood disorder, and do not impair psychosocial functioning apart from the ramifications of the delusion(s).
75 clinical trials for this condition and its sub-types, 21 tagged with Delusional disorder itself.
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Sub-types of Delusional disorder
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Capgras syndrome 1 trial
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Can a new therapy curb violence in young psychosis patients?
Disease control OngoingThis small pilot study tests a behavioral therapy called PICASSO, designed to help young adults (ages 16-30) with early psychosis who have shown violent behavior. The therapy uses cognitive behavioral techniques to address anger and violence. The study will check if the therapy i…
Sponsor: Columbia University • Aim: Disease control
Last updated Jun 26, 2026 13:24 UTC
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Can group CBT help quiet the voices and fears of psychosis?
Symptom relief By invitation onlyThis study tests a group version of the Feeling Safe Programme, a type of cognitive behavioral therapy for people with schizophrenia or schizoaffective disorder. The goal is to reduce distressing symptoms like paranoia and hallucinations and improve quality of life. Fifty partici…
Sponsor: The Royal Ottawa Mental Health Centre • Aim: Symptom relief
Last updated Aug 14, 2026 00:00 UTC
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Can magnetic pulses unlock memory secrets in early psychosis?
Knowledge-focused OngoingThis study uses a noninvasive brain stimulation technique called TMS, combined with brain scans, to understand working memory problems in people with early psychosis. Twenty participants will receive both active and placebo TMS to see how it affects brain activity and memory perf…
Sponsor: Massachusetts General Hospital • Aim: Knowledge-focused
Last updated Sep 13, 2026 00:00 UTC
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Gut bugs linked to antipsychotic weight gain in youth
Knowledge-focused OngoingThis study looks at how gut bacteria change when young people (ages 12-35) with psychosis start taking antipsychotic medication. Researchers want to see if these changes are linked to weight gain and other metabolic problems. Participants provide stool and blood samples over 12 w…
Sponsor: Centre for Addiction and Mental Health • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:37 UTC