In addition to attenuated psychotic symptoms, individuals at high clinical risk of developing psychosis display a wide range of psychopathological features. Some of these may be subjectively perceived as more troubling than others and may therefore be more likely to trigger help-seeking behavior. We aimed at investigating the nature and prevalence of symptoms subjectively considered most distressing by high-risk individuals at the time of their presentation to early recognition services and to determine their impact on baseline and longitudinal functional and clinical outcomes. The clinical records of 221 clients meeting ultra-high risk (UHR) criteria and receiving care at a specialized early intervention service ("Outreach and Support in South London") between 2001 and 2011 were reviewed. Main outcome measures were reason to seek help as subjectively reported by the clients, comorbid DSM-IV SCID diagnoses, transition to psychosis, psychosocial functioning at baseline and after a median follow-up period of 4.5 years. Affective symptoms, i.e., depression and/or anxiety, were the most commonly reported subjective reasons to seek help (47.1%). Sub-threshold psychotic symptoms were reported by 39.8%. There was no significant association between subjective complaints at presentation and transition to psychosis. However, the group reporting affective symptoms as their main subjective reason to seek help at baseline had a significantly poorer longitudinal outcome in psychosocial functioning relative to the group reporting sub-threshold psychotic symptoms. Assessment of subjective complaints in UHR individuals at initial presentation may help to identify predictors of future functional outcome and tailor treatments accordingly.
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http://dx.doi.org/10.1016/j.psychres.2015.05.018 | DOI Listing |
Background: Psychotic symptoms may manifest in Alzheimer's disease (AD), especially in advanced disease stages and in patients with higher polygenic risk scores for schizophrenia (SCZ-PRS). Such genetic risk seems also to influence grey matter volume (GMV) alterations in patients with psychosis. Since multiple neurotransmitter systems, namely dopamine (DA) and serotonin (5-HT), have been implicated in psychosis, the aim of this study was to investigate whether a SCZ-PRS may explain variance in the association between GMV and the cerebral distribution of DA and 5-HT.
View Article and Find Full Text PDFBackground: Neuropsychiatric symptoms (NPS) constitute a major challenge for patients with Alzheimer's disease (AD). We have recently demonstrated that in AD, overall NPS burden is significantly associated with patient function. However, few studies have examined the relationship between specific symptom clusters with neurological biomarkers.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada.
Background: Individuals diagnosed with COVID-19 may continue to experience symptoms long after infection. Research suggests that the COVID-19 virus may be linked to brain pathology and dementia risk, possibly due to neurological complications and long-term cognitive effects. Mild Behavioral Impairment (MBI) is an early indicator of dementia risk characterized by later life onset of persistent changes in behavior or personality.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
King's College London, London, United Kingdom; College of Medicine and Health, University of Exeter, Exeter, United Kingdom.
Psychosis is a common and distressing disorder in people with Alzheimer disease, associated with a poor clinical prognosis, an increased risk of institutionalization and for which there are no approved treatments. New approaches to diagnosis and symptom assessment and treatment are beginning to move the field forward, including the emergence of psychosis at the pre-clinical or even pre-cognitive impairment stages of disease in some individuals. The Alzheimer's Association International Society to Advance Alzheimer's Research and Treatment (ISTAART) research criteria for psychosis in neurodegenerative disease, and the ISTAART criteria for mild behavioural impairment are examples of recent developments.
View Article and Find Full Text PDFBackground: We present Phase 1 trial data using the Neuropsychiatric Inventory ("NPI") domains, NPI-delusions and NPI-hallucinations as symptoms of psychosis in participants with Alzheimer's ("AD") receiving IGC-AD1, a combination of low concentration delta 9-tetrahydrocannabinol ("THC") and melatonin. Cannabis use is considered an established risk factor for psychosis in young people. Psychosis is prevalent in AD patients, with around 50% experiencing it, generating safety concerns regarding the use of THC in these patients.
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