Sexual assault and psychosis in two large general population samples: Is childhood and adolescence a developmental window of sensitivity?

What Do Four Decades of Research Tell Us About the Association Between Childhood Adversity and Psychosis: An Updated and Extended Multi-Level Meta-Analysis

OBJECTIVE

Estimating the current association between childhood adversity and the risk of psychosis is crucial for prevention and intervention. We provided an updated synthesis of evidence from the past four decades, expanded the available data by investigating a broad array of adversity subtypes, and explored sex differences and the age of psychosis onset as relevant factors.

METHODS

We searched PubMed, EMBASE, PsycINFO, Web of Science, WANFANG, and CNKI, for case-control, cross-sectional and cohort studies on the association between adversity and psychotic symptoms/illness. Multi-level meta-analysis, prediction intervals calculation, and sensitivity analyses were conducted.

RESULTS

The main analysis included 183 study samples (N=349,265), with 119 case-control studies (15,186 cases; 14,879 controls), 51 cross-sectional studies (N=299,659), and 13 cohort studies (N=19,541). Significant associations between adversity and psychosis were observed across all study designs, yielding an overall odds ratio of 2.80 (95% CI=2.18, 3.60). Secondary analyses revealed that exposure to each adversity subtype increased the odds of psychosis, with the highest odds ratio (3.54 [95% CI=3.04, 4.13]) for emotional abuse, and the lowest odds ratio of (1.58 [95% CI=1.48, 1.68]) for parental antipathy. No statistically significant sex differences were observed, although the odds ratio for sexual abuse was higher for women. Onset of psychosis was earlier in adversity-exposed individuals (mean difference=-0.79 years, 95% CI=-1.47 to -0.12).

CONCLUSIONS

This is the largest meta-analysis to date on the association between childhood adversity and psychosis. The results have broad clinical implications, as they highlight the need for selective prevention of exposure to early adversities and the implementation of trauma-informed therapies in the treatment of psychosis.

State-of-the-Art Review: Evaluation and Management of Delusional Infestation

Delusional infestation is a condition encountered frequently by healthcare professionals across a variety of specialties in which patients have a fixed, false belief that they are infested with living creatures, such as bugs, parasites, worms, or mites, or nonliving objects, such as fibers. Delusional infestation can be debilitating for patients, who not only present with intense psychological distress and physical discomfort but are also at risk of developing numerous dermatological and psychiatric complications. This condition poses unique diagnostic challenges, as these symptoms can occur secondary to many metabolic or infectious causes, as well as unique treatment challenges, with patients frequently refusing psychiatric care and consequently seeking evaluation by other healthcare professionals. In this review, we aim to use existing literature to provide clinicians in infectious diseases or other specialties with sufficient clinical context and treatment guidance for the appropriate management of delusional infestation.

Psychotic-like experiences in a nationally representative study of general population adolescents

BACKGROUND

Subclinical psychotic-like experiences (PLEs) are common among general population adolescents but have been found to correlate with various problems in well-being. Due to limited sample sizes these effects have not been well differentiated by sex and age.

METHODS

Using a nationally representative survey of almost 160,000 adolescents, we studied endorsement and correlates of PLEs by sex among middle adolescence pupils (ages 14-16) and late adolescence students (ages 16-20). PLEs were investigated with three questionnaire items: auditory and visual hallucinatory experiences and suspicious thought content, using a frequency response scale.

RESULTS

Weekly PLEs were reported by 14 % of the adolescents, more often in females (17 %) than males (11 %) and in the younger age group (17 %) compared to the older adolescents (10 %). A latent PLE factor represented the three assessed PLEs with good fit. Factor scores were highest for the younger females and lowest for the older males. The PLE factor correlated with two latent factors of other well-being, namely living environment ("adversity", loading most heavily on parental mental abuse; r = 0.63), and concurrent mental health ("distress", loading most heavily on depressive symptoms; r = 0.50). Adversity was associated especially strongly with PLEs in 14-16-year-old males.

CONCLUSIONS

This cross-sectional study reaching the whole 14-20 age group in schools in Finland offers data on the meaning and relevance of PLEs as general markers of vulnerability. Many adolescents experience PLEs recurrently and these experiences are associated with a wide variety of burden in the adolescent's everyday life.

Sexual Minority Status and Psychotic Experiences Among Young Adult College Students in the United States

2020-2021 Healthy Minds Study, and used multivariable logistic regression to examine the associations between sexual minority status and psychotic experiences, adjusting for age, gender, and race/ethnicity. We then tested whether psychosocial factors accounted for the association. Sexual minority status was associated with 1.87 times greater odds of having psychotic experiences over the past 12 months (aOR: 1.87; 95% CI: 1.77-1.99; N = 110,551). Several factors mediated the association between sexual orientation and psychotic experiences such as loneliness (26.93%), anxiety (30.90%), depression (33.18%), and marijuana use (13.95%); all factors together accounted for 59.01% of the association between sexual minority status and psychotic experiences. Food insecurity, recent abuse, and discrimination did not significantly mediate the association. Findings should raise clinical awareness that psychotic experiences are more common among sexual minorities than among heterosexuals, which is largely explained by mental health factors, calling for targeted outreach and intervention.

Sexual and Reproductive Health in Adolescents and Young Adults With Psychotic Disorders: A Scoping Review

BACKGROUND AND HYPOTHESIS

The sexual and reproductive health (SRH) of young people with psychosis has been largely overlooked. We hypothesised that there are key deficiencies in the existing literature on the SRH of adolescents and young adults with psychotic disorders.

STUDY DESIGN

We conducted a systematic scoping review using Pubmed, Web of Science, Embase, PsycINFO, and CINAHL. We included empirical studies and case reports focused on SRH issues in young people (aged 14-24 years) with psychotic disorders. A qualitative synthesis was completed. Joanna Briggs Institute Critical Appraisal Tools were utilized to assess study quality.

STUDY RESULTS

Seventeen empirical studies and 52 case reports met inclusion criteria. Most focused on sexual dysfunction which was identified as common among this cohort and associated with both psychotic disorders and antipsychotics. The study population was more likely to engage in sexual risk-taking behavior and was at higher risk of sexually transmissible infections than those without psychosis. SRH topics of clinical relevance in older patients with psychosis such as pregnancy, abortion, sexual violence, coercion, sexual identity, and gender were poorly addressed in this younger group. We found empirical studies generally lacked identification and controlling of confounders whilst case reports provided limited description of mental health and SRH outcomes following clinical intervention.

CONCLUSION

Research and clinical practice addressing sexual and reproductive health is needed for young people living with psychosis. To address research gaps future studies should focus on women's health, sexual violence, gender, and sexuality in young people with psychosis.

Chemsex and Psychosis: A Systematic Review

Chemsex is presented as a major challenge in public health, with numerous physical and mental consequences. The general objective of this review was to analyze the relationship between the practice of chemsex and the development of psychosis. A mixed systematic review model was chosen. PubMed, PsycINFO, and Web of Science databases were searched following a predetermined search strategy. The studies were selected, and their information was extracted following a systematic method. A total of 10 articles were included. Psychotic symptoms ranged from 6.7% to 37.2%, being one of the most frequent psychiatric diagnoses. Slamsex, polydrug use and smoked methamphetamine posed up to a 3-fold increased risk of psychosis within this practice. The risk factors found were foreign or ethnic minority status, location in large cities, stress and anxiety, trauma, loneliness, sexually transmitted infections (STIs), hepatitis, and previous psychotic history. In conclusion, chemsex is associated with psychosis development; we found numerous converging risk factors and a clear mediating role of drugs. It is important, in approaching the prevention and treatment of this addiction, to take into account motivations and psychosocial circumstances.