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Studies indicate a high prevalence of childhood trauma in patient cohorts with established psychotic disorder and in those at risk of developing psychosis. A causal link between childhood trauma and development of psychosis has been proposed. We aimed to examine the association between experience of childhood trauma and the development of a psychotic disorder in a large “Ultra High Risk” (UHR) for psychosis cohort. The data were collected as part of a longitudinal cohort study of all UHR patients recruited to research studies at the Personal Assessment and Clinical Evaluation clinic between 1993 and 2006. Baseline data were collected at recruitment to these studies. The participants completed a comprehensive follow-up assessment battery (mean time to follow-up 7.5 years, range 2.4–14.9 years), which included the Childhood Trauma Questionnaire (CTQ), a self-report questionnaire that assesses experience of childhood trauma. The outcome of interest was transition to a psychotic disorder during the follow-up period. Data were available on 233 individuals. Total CTQ trauma score was not associated with transition to psychosis. Of the individual trauma types, only sexual abuse was associated with transition to psychosis (P = .02). The association remained when adjusting for potential confounding factors. Those with high sexual abuse scores were estimated to have a transition risk 2–4 times that of those with low scores. The findings suggest that sexual trauma may be an important contributing factor in development of psychosis for some individuals. [ABSTRACT FROM PUBLISHER]

Abstract: The proposed Risk Syndrome for Psychosis (RS) criteria are derived from the Ultra High Risk criteria (UHR) and prodromal or Clinical High Risk criteria (CHR), and consist of subthreshold or attenuated positive psychotic symptoms with operationalized recency and frequency criteria. The rationale behind the proposed inclusion of the RS in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSMV) is that several studies have found that the UHR/prodromal/CHR criteria predict onset of psychotic disorder, mainly schizophrenia, within a brief time period of a few years. Identifying individuals meeting these criteria thus affords the possibility of early intervention to prevent or delay onset of full blown psychotic disorder. However, the RS is yet to be properly validated. Additionally, there are potential dangerous unintended consequences of the reification of this syndrome as a formal diagnosis. Thus we feel it is premature to justify inclusion of the RS in the DSM. [Copyright &y& Elsevier]

Abstract: Background: Identification of individuals “prodromal” for schizophrenia and other psychotic disorders relies on criteria that predict onset within a brief period. Previous trials and biological research have been predicated on the view that certain “ultra high risk” (UHR) criteria detect “the prodrome”, but there is a need to test the validity of these criteria. Aim: To assess the predictive validity of the UHR criteria in a clinical population. Method: The presence of UHR criteria was determined in 292 help-seeking individuals. At 2 year follow-up the number of new cases of psychotic disorder was assessed. Results: The criteria significantly predicted onset of psychotic disorder within 2 years. The transition rate of 16% was much lower than in initial cohorts (over 40%). Conclusions: The predictive validity of UHR criteria depends on the sample to which they are applied. Although young help-seekers meeting these criteria are at greater risk of psychotic disorder than those who do not meet them, caution is needed in their management, since a high transition rate can no longer be assumed. [Copyright &y& Elsevier]

Abstract: Three types of orbitofrontal cortex (OFC) sulcogyral patterns have been identified in the general population. The distribution of these three types has been found to be altered in individuals at genetic risk of psychosis, and in patients with first episode psychosis (FEP) and chronic schizophrenia. This study aims at establishing whether altered OFC sulcogyral patterns were present in a large cohort of individuals at ultra high risk (UHR) for psychosis. OFC pattern type was classified and the number of posterior and intermediate sulci present on the surface of the OFC was counted. OFC sulcogyral type and the number of sulci were compared between controls (n=58) and UHR participants who transitioned (n=49) versus those who did not transition (n=77) to psychosis. Finally, the relationship between sulcogyral type and number of sulci with intellectual quotient (IQ), symptom severity and social functioning of UHR individuals was explored. In line with other studies conducted in chronic schizophrenia and FEP, UHR individuals who later transitioned to psychosis showed a reduced incidence of the Type I OFC on the right hemisphere compared to controls (χ2 =19.847, p<0.001). These highly consistent results point towards the protective effect of possessing a Type I OFC in the right hemisphere. Furthermore, OFC sulcus counts revealed that controls presented with a higher number of posterior (right hemisphere; χ2 =11.658, p=0.003) and intermediate sulci (left: χ2 =6.643, p=0.036; right: χ2 =11.726, p=0.020) when compared to UHR individuals. However, no associations between OFC types or sulcus count and IQ, symptoms and functioning were observed. [Copyright &y& Elsevier]

Abstract: Few studies have addressed the correlates of trauma in young people at Ultra-High Risk (UHR) of developing a psychotic disorder. We aimed to examine baseline differences in intensity, form and content of attenuated positive psychotic symptoms, other clinical symptomatology and comorbidity between UHR patients with and without a history of trauma. In a sample of 127 UHR individuals (53 male, 74 female; mean age 18.2 years, range 14–26) we assessed trauma history and baseline symptomatology using an audit tool developed to retrieve data from patient medical records. 56% of the subjects had experienced at least one type of trauma. The intensity of perceptual abnormalities was significantly higher in the group with a history of physical abuse and ‘other trauma’ compared to those without a trauma history. Physical abuse was related to higher levels of visual disturbances, suspiciousness, grandiose beliefs and low mood compared to those without a history of physical abuse. Sexual trauma was related to perceptual disturbances with abusive content and PTSD symptoms. The prevalence of previous trauma in people at UHR of developing psychosis is high. Our findings tentatively suggest that different types of trauma may impact differently on initial presentation to UHR services. [Copyright &y& Elsevier]

Abstract: Individuals at “ultra high risk” (UHR) for psychosis have been found to experience high rates of sexual trauma. An aetiological role for sexual trauma has been proposed for psychotic disorders and may influence psychotic symptom content. We aimed to investigate the relationship between previous sexual trauma and reported psychotic-like experiences, in particular psychotic symptoms with a sexual content in a UHR sample. We investigated the prevalence of “attenuated” or “subthreshold” psychotic symptoms with a sexual content in a consecutive series of patients recruited to a specialist UHR clinic. Patient''s experience of general and sexual trauma was rated separately using a trauma questionnaire based on the list of events qualifying as traumas under DSM IV. The sample consisted of 92 patients, 14 (15.2%) had experienced an attenuated psychotic symptom with sexual content. The most common symptom was overvalued ideas/delusions of being watched in the shower/toilet or undressing. A considerable proportion of the sample (36.2%) had experienced sexual trauma (sexually molested or raped). Presence of attenuated psychotic symptoms with sexual content was related to history of previous sexual trauma (OR 7.17, P <0.01). This relationship remained significant when other traumatic experiences, PTSD diagnosis, age and sex were adjusted for. Further research into this relationship with regard to outcome and treatment is warranted. [Copyright &y& Elsevier]