Substance Abuse and Posttraumatic Stress Disorder

Out of touch? How trauma shapes the experience of social touch - Neural and endocrine pathways

Trauma can shape the way an individual experiences the world and interacts with other people. Touch is a key component of social interactions, but surprisingly little is known about how trauma exposure influences the processing of social touch. In this review, we examine possible neurobiological pathways through which trauma can influence touch processing and lead to touch aversion and avoidance in trauma-exposed individuals. Emerging evidence indicates that trauma may affect sensory touch thresholds by modulating activity in the primary sensory cortex and posterior insula. Disturbances in multisensory integration and oxytocin reactivity combined with diminished reward-related and anxiolytic responses may induce a bias towards negative appraisal of touch contexts. Furthermore, hippocampus deactivation during social touch may reflect a dissociative state. These changes depend not only on the type and severity of the trauma but also on the features of the touch. We hypothesise that disrupted touch processing may impair social interactions and confer elevated risk for future stress-related disorders.

Post-traumatic stress disorder symptom remission and cognition in a large cohort of civilian women

BACKGROUND

Post-traumatic stress disorder (PTSD) is associated with cognitive impairments. It is unclear whether problems persist after PTSD symptoms remit.

METHODS

Data came from 12 270 trauma-exposed women in the Nurses' Health Study II. Trauma and PTSD symptoms were assessed using validated scales to determine PTSD status as of 2008 (trauma/no PTSD, remitted PTSD, unresolved PTSD) and symptom severity (lifetime and past-month). Starting in 2014, cognitive function was assessed using the Cogstate Brief Battery every 6 or 12 months for up to 24 months. PTSD associations with baseline cognition and longitudinal cognitive changes were estimated by covariate-adjusted linear regression and linear mixed-effects models, respectively.

RESULTS

Compared to women with trauma/no PTSD, women with remitted PTSD symptoms had a similar cognitive function at baseline, while women with unresolved PTSD symptoms had worse psychomotor speed/attention and learning/working memory. In women with unresolved PTSD symptoms, past-month PTSD symptom severity was inversely associated with baseline cognition. Over follow-up, both women with remitted and unresolved PTSD symptoms in 2008, especially those with high levels of symptoms, had a faster decline in learning/working memory than women with trauma/no PTSD. In women with remitted PTSD symptoms, higher lifetime PTSD symptom severity was associated with a faster decline in learning/working memory. Results were robust to the adjustment for sociodemographic, biobehavioral, and health factors and were partially attenuated when adjusted for depression.

CONCLUSION

Unresolved but not remitted PTSD was associated with worse cognitive function assessed six years later. Accelerated cognitive decline was observed among women with either unresolved or remitted PTSD symptoms.

Associations among Trauma Exposure, Post-Traumatic Stress Symptoms and Alcohol Use in Black/African American Treatment-Seeking Adults

OBJECTIVE

Black/African American (AA) individuals are a group at risk for co-occurring posttraumatic stress disorder (PTSD) symptoms and alcohol use due to unique cultural and system-level barriers. Although associations between trauma exposure, PTSD symptoms, and alcohol use are well established across various populations, Black/AA individuals are underrepresented in this literature, and related findings in this population are inconclusive. Thus, the goal of this study was to examine the associations among trauma exposure, PTSD symptoms, and alcohol use in a sample of treatment-seeking, Black/AA adults. We hypothesized that trauma exposure and alcohol use would be positively associated and that this relationship would be mediated by PTSD symptoms.

METHODS

This study conducted secondary analysis of screening data from a PTSD and alcohol use disorder clinical trial. Participants were 96 Black/AA adults (57.3% male; 2.0% Hispanic; M age = 44.73, SD = 11.83) who were seeking treatment for alcohol use and endorsed trauma exposure. Associations between trauma exposure, PTSD symptom severity, and quantity and frequency of alcohol use were tested using bivariate correlations and linear regressions. Hypothesized indirect effects were tested using IBM SPSS Statistics Version 27 PROCESS model 4 with bootstrapping.

RESULTS

Findings illustrated a significant positive association between trauma exposure and PTSD symptoms and between PTSD symptoms and drinks per typical drinking day. PTSD symptoms were not significantly associated with number of drinking days. Tests of indirect effects were significant for trauma exposure on drinks per typical drinking day through PTSD symptoms.

CONCLUSIONS

Results from the test of indirect effects suggest that among Black/AA adults with heavy alcohol use and trauma exposure, trauma exposure is associated with PTSD symptoms, which in turn is associated with quantity of alcohol use. These findings are consistent with research conducted with White/mixed groups and align with tenets of the self-medication model of PTSD-AUD comorbidity. These findings support current practices that highlight the importance of screening for and addressing PTSD and alcohol use in individuals exposed to trauma. Findings from this paper provide initial data on understudied relationships in an underserved sample and several suggestions are made to generate future research and improve clinical care for Black/AA adults.

CLINICAL TRIALS REGISTRY NAME

Pharmacogenetic Treatment With Anti-Glutaminergic Agents for Comorbid PTSD & AUD; ClinicalTrials.gov Identifier: NCT02884908.

The association between posttraumatic disorder symptoms and addictive behaviours in Macao within a sample of female Filipino migrant workers: a network analysis

Background: Filipino migrant workers in Macao are vulnerable to posttraumatic stress disorder (PTSD) symptoms and addictive behaviours due to trauma histories, postmigration stressors, and access to alcohol and gambling venues. While PTSD addiction comorbidity is well-established in the existing literature, such research among migrant workers is lacking.Objective: The current study investigated differential relations between PTSD symptoms and addictive behaviours in a polytrauma exposed sample of Filipino domestic workers in Macao (SAR), China.Methods: Data were collected from 1375 Filipino migrant workers; data from a subsample of 1200 participants who reported an index traumatic event and PTSD symptoms were used in the analyses. Participants responded to the PTSD Checklist for DSM-5, gambling disorder symptoms checklist from DSM-5, and The Alcohol Use Disorders Identification Test. We estimated a regularized partial correlation network structure of PTSD symptoms and addictive behaviours employing graphical LASSO and extended Bayesian information criterion.Results: PTSD symptoms of arousal and negative emotions had bridge connections with gambling disorder symptoms; while PTSD symptoms of arousal, restricted affect, negative emotions, and emotional reactivity had bridge connections with alcohol misuse.Conclusions: PTSD's arousal and negative emotion symptoms were common in the networks of PTSD and addictive behaviours, while PTSD's restricted affect and emotional reactivity symptoms were unique to the network of PTSD and alcohol misuse. Treatment of the comorbidity of PTSD and addictive behaviours may yield optimal effects when tailored to these symptoms.

The Health Implications of Perceived Anti-Muslim Discrimination Among South Asian Muslim Americans

Introduction

Anti-Muslim discrimination in the U.S. has increased exponentially since 2001, but the impact of anti-Muslim discrimination has yet to be fully examined because of limited data available on this topic and population. The objectives of this study were to (1) examine the association between perceived anti-Muslim discrimination and health risk behaviors, with depressive symptoms as a potential mediator, among South Asian Muslim Americans and (2) examine the association between other forms of perceived discrimination and health risk behaviors, with depressive symptoms as a potential mediator, among South Asian Muslim Americans.

Methods

Data were collected using an online survey, which was disseminated on subscriber e-mail lists for organizations that serve South Asian or Muslim communities. Participants were asked about perceived discrimination, depressive symptoms, diet, physical activity, tobacco use, and alcohol consumption. Data were analyzed using structural equation modeling in Mplus 8.

Results

Societal anti-Muslim discrimination had a positive association with depressive symptoms (0.19, p<0.05), as did interpersonal anti-Muslim discrimination (0.20, p<0.05) and other forms of discrimination (0.22, p<0.05). None of the discrimination scales were associated with dietary patterns, tobacco use, or alcohol consumption.

Conclusions

Study results demonstrated a link between discrimination and depressive symptoms. Further research is needed to examine associations with other adverse health outcomes and potential buffers against discrimination.

Associations between Shyness and Victimization with Substance Use Outcomes in the National Comorbidity and Collaborative Psychiatric Epidemiological Surveys

Background: There is a lack of consensus among researchers on the association between shyness and substance use. This may be due to unexamined modifiers of this association, such as childhood victimization. Objective: The purpose of this study was to examine if experiencing different types of victimization (emotional, physical, sexual, and poly-victimization) modifies the association between shyness and substance use outcomes in adults. In this study, we performed moderation analyses to investigate whether victimization moderates the association between shyness and substance use/abuse. Data came from the National Comorbidity Survey Baseline (NCS-1; 1990-1992) and the Collaborative Psychiatric Epidemiological Surveys (CPES; 2001-2003). Substance use outcomes included were binge drinking, tobacco use, other drug use, and DSM-III-R (NCS-1)/DSM-IV (CPES) classifications of alcohol and drug abuse. Results: Results from NCS-1 supported a moderating role of childhood victimization on the relationship between shyness and tobacco use only, specifically for emotional (p = .031) and physical (p < .001) victimization, and poly-victimization (p < .001). Results from CPES showed a moderating role of lifetime sexual abuse for binge drinking (p = .017), other drug use (p = .028), and alcohol abuse (p = .004). For both datasets, the associations between shyness and substance use outcomes were stronger when there were no victimization histories. Conclusion: These findings give insight on the complexity of the interaction between shyness and victimization. Future research could focus on mechanisms, such as cognitive processes, that may contribute to interactions between shyness and victimization history on substance outcomes.

Assessing posttraumatic stress disorder symptom clusters with the Minnesota Multiphasic Personality Inventory-3 in a forensic disability sample

OBJECTIVE

Previous evidence indicates that scales from the Minnesota Multiphasic Personality Inventory (MMPI) family of instruments can measure self-reported posttraumatic stress disorder (PTSD) symptomology and differentiate symptom clusters, including in forensic disability assessments. However, limited research has examined assessment of PTSD symptoms with the MMPI-3, the most recent MMPI instrument. The goal of the current study was to identify the strongest MMPI-3 scale predictors of individual PTSD symptom clusters, measured via self-report.

METHODS

Using a sample of 716 disability claimants (54.2% men; Mage  = 42.98, SD = 10.87; 81.8% White), correlation, regression, and dominance analyses were performed to examine associations between scores on MMPI-3 scales and latent PTSD symptom cluster factors derived using confirmatory factor analyses from items of the Detailed Assessment of Posttraumatic Stress (DAPS), and to identify the strongest predictor of each symptom cluster when MMPI-3 scales were concurrently considered.

RESULTS

Results indicate that conceptually expected MMPI-3 scale scores were meaningfully associated with PTSD symptom cluster factors, with the MMPI-3 Anxiety-Related Experiences (ARX) scale demonstrating the strongest and most consistent associations across symptom clusters.

CONCLUSIONS

Results of the current study largely converge with previous empirical studies of self-reported PTSD symptoms in disability claimant settings with the MMPI instruments. Interpretive implications for the MMPI-3, limitations, and future research directions are discussed.

Post-traumatic stress disorder and drug use disorder: examination of aetiological models in a Swedish population-based cohort

Background: There are two primary phenotypic models of comorbidity between post-traumatic stress disorder (PTSD) and drug use disorder (DUD), i.e. self-medication (PTSD precedes and causes DUD) and susceptibility (DUD precedes and causes PTSD). We sought to clarify the longitudinal relationship between PTSD and DUD, while examining sex differences.Method: We used approximately 23 years of longitudinal data from Swedish population registries to conduct two complementary statistical models: Cox proportional hazard models (N ≈ 1.5 million) and a cross-lagged panel model (N ≈ 3.8 million).Results: Cox proportional hazards models, adjusting for cohort and socioeconomic status, found strong evidence for the self-medication hypothesis, as PTSD predicted increased risk for DUD among both women [hazard ratio (HR) = 5.34, 95% confidence interval (CI) 5.18, 5.51] and men (HR = 3.65, 95% CI 3.54, 3.77), and moreover, that the PTSD to DUD association was significantly higher among women (interaction term 0.68, 95% CI 0.65, 0.71). The results of the susceptibility model were significant, but not as strong as the self-medication model. DUD predicted risk for PTSD among both women (HR = 2.43, 95% CI 2.38, 2.50) and men (HR = 2.55, 95% CI 2.50, 2.60), and HR was significantly higher in men (interaction term 1.05, 95% CI 1.02, 1.08). Investigating the pathways simultaneously in the cross-lagged model yielded support for both pathways of risk. The cross-paths instantiating the susceptibility model (0.10-0.22 in females, 0.12-0.19 in males) were mostly larger than those capturing the self-medication model (0.01-0.16 in females, 0.04-0.22 in males).Conclusions: We demonstrate that the relationship between PTSD and DUD is bidirectional, with evidence that future research should prioritize examining specific pathways of risk that may differ between men and women.

Behavioral and neurocognitive factors distinguishing post-traumatic stress comorbidity in substance use disorders

Significant trauma histories and post-traumatic stress disorder (PTSD) are common in persons with substance use disorders (SUD) and often associate with increased SUD severity and poorer response to SUD treatment. As such, this sub-population has been associated with unique risk factors and treatment needs. Understanding the distinct etiological profile of persons with co-occurring SUD and PTSD is therefore crucial for advancing our knowledge of underlying mechanisms and the development of precision treatments. To this end, we employed supervised machine learning algorithms to interrogate the responses of 160 participants with SUD on the multidimensional NIDA Phenotyping Assessment Battery. Significant PTSD symptomatology was correctly predicted in 75% of participants (sensitivity: 80%; specificity: 72.22%) using a classification-based model based on anxiety and depressive symptoms, perseverative thinking styles, and interoceptive awareness. A regression-based machine learning model also utilized similar predictors, but failed to accurately predict severity of PTSD symptoms. These data indicate that even in a population already characterized by elevated negative affect (individuals with SUD), especially severe negative affect was predictive of PTSD symptomatology. In a follow-up analysis of a subset of 102 participants who also completed neurocognitive tasks, comorbidity status was correctly predicted in 86.67% of participants (sensitivity: 91.67%; specificity: 66.67%) based on depressive symptoms and fear-related attentional bias. However, a regression-based analysis did not identify fear-related attentional bias as a splitting factor, but instead split and categorized the sample based on indices of aggression, metacognition, distress tolerance, and interoceptive awareness. These data indicate that within a population of individuals with SUD, aberrations in tolerating and regulating aversive internal experiences may also characterize those with significant trauma histories, akin to findings in persons with anxiety without SUD. The results also highlight the need for further research on PTSD-SUD comorbidity that includes additional comparison groups (i.e., persons with only PTSD), captures additional comorbid diagnoses that may influence the PTSD-SUD relationship, examines additional types of SUDs (e.g., alcohol use disorder), and differentiates between subtypes of PTSD.

Congruence couple therapy for alcohol use and gambling disorders with comorbidities (part II): Targeted areas and mechanisms of change

Study of change mechanisms is important to advance theory development and to reveal the active components that make a critical difference in treatment. Improved outcomes in a randomized controlled trial that favored Congruence Couple Therapy (CCT) vs individual-based Treatment-as-Usual (TAU) were correlated within each group. Partial correlations were used to test for mediation effects. The aggregate correlation coefficient of improved variables in addiction and mental health, couple adjustment, emotion regulation (ER) and life stress was moderate for CCT and weak for TAU. CCT showed greater number of mediating effects among improved variables than TAU. The prominence of the process mechanism of improved ER with its mediating effects for addiction and psychiatric symptoms evidenced in both groups is noteworthy, but ER improvement was significantly associated with improved couple adjustment only in CCT. Reduction in life stress in CCT was associated with a broader range of improvements in CCT compared to TAU. Correlation patterns were substantiated by CCT participants' endorsement of treatment targets emphasizing relationship, communication, emotion, problem solving, addiction and intergenerational issues of trauma. TAU participants reported significantly lower endorsements for these treatment targets. The correlation of ER and couple adjustment suggested as a key process mechanism should be further elucidated in future studies to differentiate relationship-based vs individual-based models and their respective outcomes for primary clients and partners. These findings are considered preliminary, requiring larger samples and advanced modelling among variables to provide a more profound mechanism analysis.

Adverse Childhood Experiences and Binge Drinking in Adolescence: the Role of Impulsivity and PTSD Symptoms

Background

The present study examines impulsivity and posttraumatic stress disorder (PTSD) symptoms as factors that may help understand the relationship between adverse childhood experiences (ACEs) and adolescent binge drinking.

Methods

Data were drawn from a subset of adolescents (N = 285) ages 12-22 from the National Consortium on Alcohol & Neurodevelopment in Adolescence (NCANDA). Impulsivity and PTSD symptoms were each predicted to moderate the relationship between ACEs and binge drinking.

Results

The positive relationship between PTSD symptoms and binge drinking was stronger when impulsivity was included. The positive relationship between ACEs and binge drinking was also strengthened when accounting for PTSD symptoms.

Conclusion

Our results provide evidence that impulsivity and PTSD symptoms may increase the risk for binge drinking during adolescence, including following ACEs. Interventions targeting PTSD symptoms and impulsivity could be valuable tools in preventing adolescent binge drinking.

Adverse Maternal Experiences and Neonatal Abstinence Syndrome

OBJECTIVES

To propose a measure for adverse maternal experiences (AMEs) and examine if AMEs are independently associated with delivery of a neonatal abstinence syndrome (NAS) diagnosed infant.

METHODS

Using the Pregnancy Risk Assessment Monitoring System (PRAMS) stressful life events questions, we constructed a composite measure of AMEs. We conducted a retrospective analysis of linked Birth Certificate Data, Hospital Discharge Data and PRAMS data for 2012-2018 using the composite measure. Our analytic sample included 6358 singleton deliveries. We calculated prevalence of NAS and AMEs and prevalence odds ratio (POR) for delivery of an NAS-diagnosed infant adjusting for maternal sociodemographic characteristics, pre-pregnancy depression, prescription medicine 12 months prior to pregnancy, and smoking during pregnancy.

RESULTS

The overall prevalence of NAS in Delaware during 2012-2018 was 2.2% (95% CI 1.8-2.6); 9.5% (95% CI 8.7-10.2) of women reported AMEs. After adjustment, women with AMEs had 1.1 times greater odds (aPOR 2.1; 95% CI 1.3-3.3) to deliver a NAS-diagnosed infant as compared with women without AMEs.

CONCLUSIONS

Although the cross-sectional nature of the study limits drawing any causal inferences, there are co-occurring factors that support plausibility of an association between AMEs and delivering NAS-diagnosed infants. Addressing AMEs, mental health and substance use screening and treatment as part of preconception and prenatal care may mitigate risks.

Increased Substance Use among Nurses during the COVID-19 Pandemic

There is growing evidence that the COVID-19 pandemic has had a severe impact on the nursing profession worldwide. Occupational strain has disrupted nurses' emotional wellbeing and may have led to negative coping behaviors, such as increased substance use, which could impair cognitive functioning. The aim of this study was to examine whether increased substance use in a sample of U.S. nurses during the pandemic was related to greater workplace cognitive failure. An online questionnaire was administered in May 2020 to Michigan nurses statewide via three nursing organizations (n = 695 respondents). A path model was used to test the direct effects of reported increased substance use on workplace cognitive failure and via parallel psychological mediators. The model had excellent fit to the observed data, with statistically significant, unique mediating effects of greater symptoms of anxiety (b = 0.236, z = 2.22, p = 0.027), posttraumatic stress disorder (b = 0.507, z = 4.62, p < 0.001) and secondary trauma (b = 1.10, z = 2.82, p = 0.005). Importantly, the direct effect of increased substance use on workplace cognitive failure was not statistically significant independent of the mediators (b = 0.133, z = 0.56, p = 0.576; 95% confidence interval: -0.33, 0.60). These results point to the importance of further delineating the mechanistic pathways linking adverse stress to workplace cognitive failure. As we emerge from the pandemic, healthcare systems should focus resources on supporting cognitive health by addressing the psychological and emotional welfare of nurses, many of whom may be struggling with residual trauma and increased substance use.

A retrospective chart review of trauma-related documentation in an Australian substance use treatment service

INTRODUCTION

Trauma exposure among clients of substance use treatment services is almost universal and rates of trauma-related symptoms are correspondingly high. This study examined one aspect of clinical care-clinical documentation-and sought to systematically assess the documentation of trauma-related comorbidities and their treatment in a substance use treatment setting.

METHODS

A retrospective chart review was conducted on a sample of 300 patient records in a public substance use treatment setting. Rates of documentation of trauma-related events, symptoms and treatment, along with variables influencing the documentation of these issues, were examined.

RESULTS

Trauma-related documentation was present in 45.3% of records. There were documented trauma-related symptoms in 15.3% of records, although treatment activities addressing trauma were only present in 2.3% of records. Being female (odds ratio [OR] 2.58, 95% confidence interval [CI] 1.42, 4.69), having prior mental health treatment (OR 1.82, 95% CI 1.05, 1.12) and having more treatment sessions (OR 1.08, 95% CI = 1.05, 1.12) increased the odds of trauma-related documentation being present, while being in the first episode of treatment (OR 0.49, 95% CI = 0.28, 0.84) decreased the odds.

DISCUSSION AND CONCLUSIONS

This study highlights significant under documentation of trauma-related comorbidities in substance-use treatment. There is limited evidence of consideration of trauma-related symptoms or diagnoses, and trauma-related comorbidities are rarely included in treatment planning activities. The lack of documented trauma-related information has important clinical and medico-legal implications for patients, and provides evidence to suggest a lack of integration of treatment for trauma-related disorders in substance use settings.

Traumatic experiences and PTSD symptoms in substance use disorder: A comparison of recovered versus current users

Introduction: The aim of this study was to investigate the prevalence of traumatic experiences and symptoms of posttraumatic stress disorder (PTSD) in treatment-seeking individuals with ongoing substance use disorder (SUD) compared to individuals who have recovered from SUD. Methods: Patients with SUD recruited from the STAYER study (N = 114) underwent an examination of alcohol and drug use, childhood trauma, negative life events and PTSD symptomatology. In this study, only participants with 12-month concurrent polysubstance use was included. Using historical data from the STAYER study, alcohol and drug trajectories were dichotomised as (1) current SUD (current SUD) or (2) recovered from substance use disorder (recovered SUD). Crosstabs and chi-tests were used to measure differences between groups. Results: Childhood maltreatment, traumatic experiences later in life and symptoms of concurrent PTSD were highly prevalent in the study population. We found no significant difference between the current and recovered SUD groups. Recovered women reported a lower prevalence of physical neglect (p = 0.031), but a higher prevalence of multiple lifetime traumas (p = 0.019) compared to women with current SUD. Both women with current SUD and recovered women reported a significantly higher prevalence of sexual aggression than men (p < 0.001 and p < 0.001, respectively). In addition, men who have recovered from SUD reported a lower prevalence of PTSD symptoms over cut-off 38 (p = 0.017), of re-experiencing (p = 0.036) and of avoidance (p = 0.015), compared to recovered women. Conclusion: Reported trauma did not differ between persons with current SUD and those who had recovered from SUD. Gender differences discovered in this study indicate the importance of developing individualised and gender-specific treatment models for comorbid PTSD/SUD.

Comorbid posttraumatic stress disorder and alcohol use disorder in low- and middle-income countries: A narrative review

Much of the research on posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD) has been conducted in high-income countries (HICs). However, PTSD and AUD commonly co-occur (PTSD + AUD) are both associated with high global burden of disease, and disproportionately impact those in low- and middle-income countries (LMICs). This narrative review attempts to synthesize the research on prevalence, impact, etiological models, and treatment of PTSD + AUD drawing from research conducted in HICs and discussing the research that has been conducted to date in LMICs. The review also discusses overall limitations in the field, including a lack of research on PTSD + AUD outside of HICs, issues with measurement of key constructs, and limitations in sampling strategies across comorbidity studies. Future directions are discussed, including a need for rigorous research studies conducted in LMICs that focus on both etiological mechanisms and on treatment approaches.

The association between recreational cannabis use and posttraumatic stress disorder: A systematic review and methodological critique of the literature

BACKGROUND

Given recent changes in the legal status of cannabis, the risks and benefits associated with its use have become an important public health topic. A growing body of research has demonstrated that posttraumatic stress disorder (PTSD) and recreational cannabis use (RCU) frequently co-occur, yet findings are inconsistent (e.g., direction of effect) and methodological variability makes comparison across studies difficult.

METHODS

We conducted a comprehensive systematic review of all studies (N = 45) published before May 2020 regarding etiologic models of co-occurring RCU and PTSD, as well as provided a methodological critique to inform suggestions for future research initiatives.

RESULTS

Findings indicate that a majority of studies (n = 37) demonstrated a significant association between RCU and PTSD. Findings provide evidence for the self-medication and high-risk models posited to explain co-occurring RCU and PTSD despite variability in assessment of RCU, which includes commonly used non-standardized self-report questions.

CONCLUSION

The association between RCU and PTSD is likely bidirectional. Results inform clinicians and researchers working in the mental health and cannabis use fields how the variability in findings on the association between RCU and PTSD may be attributable, in part, to methodological issues that permeate the extant literature pertaining to RCU and PTSD.

The Role of Discrimination Experiences in Postrape Adjustment Among Racial and Ethnic Minority Women

Although recent studies have linked discrimination frequency among Black and Latinx individuals to PTSD symptom severity, to our knowledge, these associations have yet to be examined among a diverse sample of recent rape survivors. The current secondary analysis of existing data examined the role of discrimination experiences in post-traumatic stress disorder (PTSD) symptoms, depression, and alcohol and drug problems among a racially and ethnically diverse sample of recent rape survivors. Participants were 139 Black (48.2%; n = 67), American Indian (18.7%; n = 26), Hispanic (15.1%; n = 21), and mixed race (17.3%; n = 24) girls and women age 15 or older who presented to the emergency department (ED) for a sexual assault forensic medical exam. They were randomly assigned to one of three intervention conditions, and completed a six-month postrape follow-up, including questions about mental health, substance use problems, and discrimination experiences. Regression analyses revealed that Black women experienced discrimination in significantly more situations and with greater frequency compared to American Indian and Hispanic women. Discrimination frequency was positively associated with PTSD and depression symptoms even after controlling for age, education, race, and intervention condition, but was not associated with alcohol or drug problems. Findings highlight the importance of attending to the heterogeneous experiences of discrimination among racial and ethnic minority women. Future work should adapt evidence-based early interventions to be maximally effective at combating both racial and sexual trauma exposures.

Trauma and alcohol characteristics related to high intensity binge drinking during college

High intensity (HI) binge drinking has emerged as a high-risk drinking phenotype in young adult drinkers, yet few studies have evaluated clinically meaningful correlates of HI binge drinking among young adults at risk for co-occurring psychopathologies, such as interpersonal trauma-exposed drinkers. The present study compared three groups (i.e., HI binge, standard binge, non-binge drinkers) of interpersonal trauma-exposed college student drinkers (N = 221) on alcohol and interpersonal trauma characteristics. Results of one-way ANOVAs indicated that the HI binge group endorsed significantly greater negative alcohol-related consequences relative to the other two groups. The HI binge group endorsed significantly greater enhancement motives compared to the non-binge group, and no group differences were detected for PTSD and interpersonal trauma characteristics. Individuals who engage in HI binge drinking may experience greater alcohol problems due to their use of alcohol to enhance positive mood. HI binge drinking does not differentiate individuals on the basis of interpersonal trauma experiences or related psychopathology.

A trauma-informed substance use disorder prevention program for transracially adopted children and adolescents

The prevalence of substance use among transracial and international adoptees is higher than that of non-adopted persons, and yet no specialized treatment modalities exist for this underserved population. Our purpose is to propose a substance use disorder (SUD) prevention program for transracial adoptive families that addresses the specific issues that face this community. There are several pre- and post-adoption factors which position transracial and international adoptees (TRIAs) to be at higher risk to develop SUDs. Some of these factors include adoption identity, trauma, loss, genetics, and racial discrimination. The biopsychosocial (BPS) model (Engel, 1977) is used to conceptualize SUDs in adoptees, and theories that focus on adoption-related development issues such as the Adoptee Stress and Coping Model (Brodzinsky, 1990) are also presented. Our proposed program, Strengthening Transracial Adoptive Families (STAF), utilizes the Guiding Good Choices (GGC) prevention program as its foundation to integrate a culturally responsive adoption-focused curriculum to best serve transracial adoptive families.

Fatigue sensitivity and mental health among trauma-exposed firefighters

Background

Firefighters are faced with numerous work-related demands and stressors, including exposure to potentially traumatic events, and are thus at an increased risk for poor mental health outcomes. To better understand the mental health of trauma-exposed firefighters, the current study sought to examine the association of fatigue sensitivity with posttraumatic stress disorder (PTSD), anxiety, and depressive symptom severity in a cross-sectional study design.

Methods

Participants included 107 (M _age = 40.8 years; SD _age = 8.95; age range: 21-67 years; 95.0% male) trauma-exposed firefighters.

Results

Findings from the current study indicated that fatigue sensitivity was a statistically significant clinical correlate of PTSD, anxiety, and depressive symptom severity. The statistically significant incremental effects were small to medium across the mental health variables, but evident after accounting for years in the fire service, sleep quality, and trauma load.

Conclusions

The present data provide initial empirical evidence for the role of fatigue sensitivity in terms of a broad range of mental health indices among trauma-exposed firefighters.

A predictive coding account of value-based learning in PTSD: Implications for precision treatments

While there are a number of recommended first-line interventions for posttraumatic stress disorder (PTSD), treatment efficacy has been less than ideal. Generally, PTSD treatment models explain symptom manifestation via associative learning, treating the individual as a passive organism - acted upon - rather than self as agent. At their core, predictive coding (PC) models introduce the fundamental role of self-conceptualisation and hierarchical processing of one's sensory context in safety learning. This theoretical article outlines how predictive coding models of emotion offer a parsimonious framework to explain PTSD treatment response within a value-based decision-making framework. Our model integrates the predictive coding elements of the perceived: self, world and self-in the world and how they impact upon one or more discrete stages of value-based decision-making: (1) mental representation; (2) emotional valuation; (3) action selection and (4) outcome valuation. We discuss treatment and research implications stemming from our hypotheses.

PTSD Avoidance Symptoms Associated With Alcohol Craving in Treatment-Seeking Veteran Population

Objective: Posttraumatic stress disorder (PTSD) is one of the most frequently treated behavioral health conditions within the Department of Veterans Affairs and often co-occurs with alcohol or substance use. Past research suggests that alcohol and/or substance use may be used to cope with PTSD symptoms but there are inconsistent findings in how specific PTSD symptom clusters are associated with alcohol use disorder (AUD) or substance use disorder (SUD). Evaluating the relationship between PTSD symptom clusters and craving for individual drug of dependence may help explain these ambiguous results. Methods: Veterans (N = 167) recently engaged in mental health residential treatment were recruited to participate in a semi-structured diagnostic interview (Structured Clinical Interview for the DSM-5, Research Version [SCID-5-RV]) to assess for past 12-month history of AUD/SUD. Participants also completed the Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5) to assess PTSD symptoms. Results: Covarying for severity of alcohol use, avoidance symptoms were significantly associated with alcohol craving for veterans with alcohol as their drug of dependence. Covarying for severity of stimulant use, no PTSD symptom clusters were associated with stimulant craving for veterans with stimulants as their drug of dependence. Conclusions: Veterans with high levels of PTSD avoidance symptoms may experience alcohol craving symptoms because they believe that alcohol use will eliminate or alleviate thoughts, feelings, or external reminders of the trauma. These results have important clinical implications in the treatment of co-occurring PTSD and AUD.

Examining Internalizing Mental Health Correlates of Addiction Severity in Patients Hospitalized With Medical Complications From Substance Use Disorder

Background:

Comorbidities between Substance Use Disorder (SUD) and mental health disorders are highly prevalent, yet there remains a lack of information regarding how mental health conditions may affect addiction severity. Consequently, this study sought to investigate the relationship between internalizing disorders (anxiety and mood disorders) and addiction severity in patients hospitalized for SUD-related medical complications. Individual difference predictors and history of prior treatment for SUD were also examined.

Methods:

Participants (N = 200) were hospitalized patients who consented to receive peer-based recovery support services for their SUD. To be eligible for the study, participants needed to have a SUD diagnosis due to alcohol, opioids, methamphetamine, cocaine, or a combination of these substances (polysubstance use). Participants completed self-report questionnaires regarding demographics, mental health history, prior SUD treatment, and addiction severity (Drug and Alcohol Screening Test; DAST-10) during their hospitalization.

Results:

Results showed that patients with Generalized Anxiety Disorder (GAD) (M = 6.68, SD = 2.97) had greater addiction severity compared to those without GAD (M = 5.41, SD = 3.34), P = .016. Addiction severity results stratified by SUD type showed that the relationship was significant among patients with Alcohol Use Disorder (P = .014), but not among those with other SUD types (Ps > .27). Major Depressive Disorder (MDD) and Post-Traumatic Stress Disorder (PTSD) were not linked to addiction severity. Among those with GAD, 81.4% had previously been to treatment compared to only 53.1% of those without GAD, P = .010. The only participant characteristic linked with addiction severity was insurance status.

Conclusions:

GAD may represent a risk factor for advanced alcohol addiction trajectories, including greater addiction severity and severe health complications requiring inpatient hospitalization.

What's in a name? A data-driven method to identify optimal psychotherapy classifications to advance treatment research on co-occurring PTSD and substance use disorders

Background/Objective

The present study leveraged the expertise of an international group of posttraumatic stress and substance use disorder (PTSD+SUD) intervention researchers to identify which methods of categorizing interventions which target SUD, PTSD, or PTSD+SUD for populations with both PTSD+SUD may be optimal for advancing future systematic reviews, meta-analyses, and comparative effectiveness studies which strive to compare effects across a broad variety of psychotherapy types.

Method

A two-step process was used to evaluate the categorization terminology. First, we searched the literature for pre-existing categories of PTSD+SUD interventions from PTSD+SUD clinical trials, systematic and literature reviews. Then, we surveyed international trauma and substance use subject matter experts about their opinions on pre-existing intervention categorization and ideal categorization nomenclature.

Results

Mixed method analyses revealed that a proliferation of PTSD+SUD treatment research over the last twenty years brought with it an abundance of ways to characterize the treatments that have been evaluated. Results from our survey of experts (N = 27) revealed that interventions for PTSD+SUD can be classified in many ways that appear to overlap highly with one another. Many experts (11/27; 41%) selected the categories of 'trauma-focused and non-trauma focused' as an optimal way to distinguish treatment types. Although several experts reinforced this point during the subsequent meeting, it became clear that no method of categorizing treatments is without flaws.

Conclusion

One possible categorization (trauma-focused/non-trauma focused) was identified. Revised language and nomenclature for classification of PTSD+SUD treatments are needed in order to accommodate the needs of this advancing field.

The relevance of post-traumatic stress disorder as a moderator of the relationship between experience of violent or sexual assault and opioid use in adulthood

BACKGROUND

Past research has indicated that individuals suffering from post-traumatic stress disorder (PTSD) may demonstrate increased sensitivity to stress exposure following onset of the disorder. Thus, having PTSD may amplify the effects of subsequent stressors. This has been found to be relevant in some forms of substance use but relationships between PTSD, new stress and opioid use specifically has not been examined.

AIMS

To explore interactions between PTSD, new victimisation and opioid use and test the hypothesis that PTSD will moderate any victimisation-opioid use relationship.

METHODS

The pathways to desistance data were used in analyses. A series of logistic regression models were used to test both direct effects of victimisation and PTSD on opioid use and interactions between them.

RESULTS

The sample was comprised of a male majority (male N = 1,170; female N = 184). Results indicated that neither PTSD nor victimisation were significant predictors of opioid use. PTSD was found to moderate the relationship between victimisation and opioid use in the hypothesised manner.

CONCLUSIONS

There may be clinical implications of these results relating to both inpatient and outpatient treatment. Regular trauma screening, additional victims' services and trauma-informed care may help to reduce the risk of opioid use among individuals suffering from PTSD.

Link between childhood trauma and psychotic-like experiences in non-affected siblings of schizophrenia patients: A case-control study

AIM

Prior research has consistently demonstrated a relationship between childhood trauma (CT) exposure and an increased risk of developing psychotic-like experiences (PLE) and disorders. Studying the link between CT and PLE in non-clinical populations with or without genetic risk factors could help elucidate the etiopathogeny of psychotic disorders, by removing the effect of confounding variables related to psychotic-spectrum illnesses.

METHOD

A total of 60 non-affected siblings of patients with schizophrenia and 75 controls (aged 18-35 years) participated in a cross-sectional survey. The Positive Subscale of Community Assessment of Psychotic Experiences (CAPE) and the CT Questionnaire were used.

RESULTS

We found no significant difference with regard to positive dimension of the CAPE between the two groups. Siblings have reported higher CAPE negative symptoms scores than controls (27.9 vs 24.2; P = .015), and more emotional abuse and physical neglect during childhood than controls. After controlling for demographic and psychosocial variables, sexual abuse, emotional neglect and physical neglect were positively related to positive psychotic symptoms in the control group, whereas no dimension of CT has been linked to these symptoms in the sibling group.

CONCLUSION

The link between CT and psychosis seems to be complex, not only dependent on genetic vulnerability or early environmental factors shared by siblings of patients with psychotic disorders, but also several other confounding factors, including other psychopathological symptoms. Prevention strategies for individuals at genetic risk of psychosis should pay particular attention to CT as a potential predictor of sub-clinical depression and psychosis.

Trauma and post-traumatic stress disorder in patients treated for opioid use disorder: findings from a 12-month cohort study

BACKGROUND

Exposure to traumatic events is both a risk factor for substance use and an adverse outcome of substance use disorders. Identifying and managing post-traumatic stress disorder (PTSD) in patients with addiction requires attention.

AIMS

To examine the lifetime prevalence of traumatic events and past-month prevalence of PSTD in patients treated for opioid use disorder, and explore the association between trauma, PTSD and treatment outcomes.

METHOD

Participants (n = 674) receiving methadone treatment in 20 community clinics across Ontario, Canada, were administered the Mini-International Neuropsychiatric Interview to identify self-reported traumatic events and PTSD. Drug use was measured for 12 months by urine drug screens.

RESULTS

Eleven per cent of participants met past-month criteria for PTSD (n = 72), and 48% reported history of traumatic events with no current PTSD (n = 323). Participants with PTSD were more likely to be female (odds ratio 2.13, 95% CI 1.20-3.76) and less likely to be employed (odds ratio 0.31, 95% CI 0.16-0.61) or married (odds ratio 0.51, 95% CI 0.26-0.90) than those with no trauma history. Antidepressants (39 v. 24%) and benzodiazepines (36 v. 18%) were differentially prescribed to patients with and without PTSD. Length of time in treatment and opioid use were not associated with trauma; however, suicidal ideation was more common in PTSD (odds ratio 2.29, 95% CI 1.04-5.01).

CONCLUSIONS

Trauma and PTSD are prevalent among patients with opioid use disorder, and consideration of trauma symptoms and associated characteristics is warranted. Patients with and without comorbid PTSD differ clinically and psychosocially, highlighting the relevance of integrating addiction and mental health services for this population.

Brain reward circuitry: The overlapping neurobiology of trauma and substance use disorders

Mental health symptoms secondary to trauma exposure and substance use disorders (SUDs) co-occur frequently in both clinical and community samples. The possibility of a shared aetiology remains an important question in translational neuroscience. Advancements in genetics, basic science, and neuroimaging have led to an improved understanding of the neural basis of these disorders, their frequent comorbidity and high rates of relapse remain a clinical challenge. This project aimed to conduct a review of the field's current understanding regarding the neural circuitry underlying posttraumatic stress disorder and SUD. A comprehensive review was conducted of available published literature regarding the shared neurobiology of these disorders, and is summarized in detail, including evidence from both animal and clinical studies. Upon summarizing the relevant literature, this review puts forth a hypothesis related to their shared neurobiology within the context of fear processing and reward cues. It provides an overview of brain reward circuitry and its relation to the neurobiology, symptomology, and phenomenology of trauma and substance use. This review provides clinical insights and implications of the proposed theory, including the potential development of novel pharmacological and therapeutic treatments to address this shared neurobiology. Limitations and extensions of this theory are discussed to provide future directions and insights for this shared phenomena.

Critical considerations for the positive memory-posttraumatic stress disorder model

Posttraumatic stress disorder (PTSD) includes changes in processes such as encoding and retrieval for both traumatic and positive memories. However, most work has predominantly focused on traumatic memories. Thus, Contractor and colleagues proposed a Positive Memory-PTSD model, which highlighted potential benefits associated with and mechanisms underlying positive memory retrieval/processing among individuals reporting PTSD symptoms. To enhance research on and clinical impacts of this model, the current review provides critical considerations for the Positive Memory-PTSD model. Drawing from emerging research and clinical observations, we (i) clarify that the model addresses specific versus overgeneral positive memories; (ii) underscore the importance of considering the heterogeneity in, and transitionary nature of, affect processes following positive memory retrieval; and (iii) highlight the rationale for considering trauma type/count and co-occurring conditions, as potential moderators of relations between positive memory processing and PTSD. Hereby, we provide an updated Positive Memory-PTSD model and implications for positive memory interventions drawing from this model.

Alcohol to down-regulate negative and positive emotions: Extending our understanding of the functional role of alcohol in relation to posttraumatic stress disorder

INTRODUCTION

Functional models of posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD) underscore the role of internally-driven negative reinforcement. However, with the focus of these models being on negative emotions broadly, there is limited understanding of the effect of alcohol use to down-regulate specific forms of negative emotions or positive emotions generally. Among populations characterized by PTSD, there is growing evidence that positive emotions may elicit aversive reactions and thus be intentionally reduced, including via alcohol use.

OBJECTIVE

The current study examined the associations among PTSD symptom severity, alcohol use to down-regulate both negative (i.e., despondency and anger) and positive emotions, and alcohol misuse.

METHOD

Data were collected from 320 trauma-exposed, substance-using individuals in the community (M age = 35.78, 46.9% women).

RESULTS

Individuals with greater PTSD symptom severity reported significantly higher alcohol use to down-regulate despondency, anger, and positive emotions, which, in turn, were linked to greater alcohol misuse.

CONCLUSIONS

Alcohol use may serve to down-regulate both negative (i.e., despondency and anger) and positive emotions, and these functions may help to explain the association of PTSD symptom severity to alcohol misuse. PTSD-AUD models may benefit from specifying a negatively reinforcing function of alcohol use in the context of positive emotions.

Association of opioid misuse with anxiety and depression: A systematic review of the literature

The opioid epidemic is a public health problem associated with a host of negative outcomes. Although clinicians recognize covariation between opioid misuse with anxiety and depressive symptoms and disorders, research on this topic has only recently accumulated. Progress in this domain is impeded by the lack of systematic and integrative research to better understand and treat these co-occurring problems. This paper represents the first attempt to systematically review the empirical literature examining relations between opioid use and misuse, and anxiety and depression. In the first section, we define key terms and describe the article selection strategy. In the second section, we review the prevalence of anxiety and depressive symptoms among individuals who use and misuse prescription and illicit opioids. In the third section, we review the magnitude of associations between anxiety and depressive symptoms and disorders with opioid misuse, as well as highlight studies examining the longitudinal and temporal sequence of the relations between these variables. In the fourth section, we focus on experimental therapeutics, reviewing what is known about individual difference and transdiagnostic vulnerability factors for anxiety and depression that might contribute to opioid misuse and its symptoms. Finally, we discuss current knowledge gaps and present a heuristic model to guide future research.

Diagnostic utility of the Minnesota multiphasic personality inventory-2 in patients diagnosed with psychogenic non-epileptic seizures in the Czech Republic

PURPOSE

The purpose of the present study is to examine the Minnesota Multiphasic Personality Inventory 2 (MMPI-2) scores of individuals diagnosed with psychogenic non-epileptic seizures (PNES) in a tertiary epilepsy center in the Czech Republic.

METHOD

Patients (F:M 130:45; mean age 36.8 years; 12.7 years of education, frequency of seizures 0.37 per day, illness duration 5.75 years) were assessed while inpatients at the Epilepsy Center, Na Homolce Hospital, Prague. Patients underwent video-EEG testing and comprehensive neuropsychological testing and personality assessment which included the MMPI-2.

RESULTS

Elevated (+1.5SD) F and Back F (Fb) validity scales were observed along with elevated clinical scales Hypochondriasis (Hs), Depression (D), Hysteria (Hy), Psychasthenia (Pt), and Schizophrenia (Sc). Scores higher than 1 SD were found in Psychopathic Deviate (Pd), Paranoia (Pa), Hypomania (Ma) andSocial Introversion (Si) scales and on validity scales True Response Inconsistency Scale (TRIN) and Variable Response Inconsistency Scale (VRIN).

CONCLUSION

Patients diagnosed with PNES exhibit numerous elevations on the MMPI-2. Understanding the underlying psychological constructs of the patient with PNES more accurately improves predictive utility (for the presence of PNES) and allows the clinician to offer interventions that are more customized. Minnesota Multiphasic Personality Inventory results may be useful to exclude other possible diagnoses and to further determine the individual's characteristics that may be helpful when tailoring treatment, including psychotherapy.

Examining Transdiagnostic Factors among Firefighters in Relation to Trauma Exposure, Probable PTSD, and Probable Alcohol Use Disorder

Firefighters represent a distinct group of first responders that are at heightened risk of developing posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD). Assessing the role of transdiagnostic factors that underlie PTSD-AUD associations can inform specialized interventions among this population. This study included urban firefighters (N = 657) with probable PTSD-AUD (n = 27), probable PTSD-alone (n = 35), probable AUD-alone (n = 125), and trauma-exposure-only (n = 470). Methods: All firefighters completed a self-report, online questionnaire battery. Between group differences in anxiety sensitivity (AS), distress tolerance (DT), mindfulness, and emotional regulation difficulties (ERD) were assessed. It was hypothesized that firefighters with probable PTSD-AUD would endorse elevated AS and ERD, and reduced DT and mindfulness in comparison to all other diagnostic groups. Relationship status was included as a covariate in all comparisons. Results: Firefighters with probable PTSD-AUD endorsed elevated AS and ERD, and reduced DT and mindfulness in comparison to firefighters with trauma-exposure-only and probable AUD-alone. Firefighters with probable PTSD-AUD and probable PTSD-alone did not significantly differ. Conclusions: Given these findings, this line of inquiry has great potential to inform specialized, evidence-based mental health programming among firefighter populations, who represent a unique population susceptible to trauma-exposure, PTSD symptomology, and problematic alcohol use.

Internalizing and externalizing subtypes in female patients with co-occurring post-traumatic stress disorder and substance use disorders

BACKGROUND

Research has described subtypes with more internalizing and more externalizing symptoms in samples of patients with post-traumatic stress disorder (PTSD) and samples of patients with substance use disorders (SUD).

OBJECTIVE

This study sought to examine the respective subtypes in female PTSD-SUD patients and potential relationships with substance use characteristics.

METHODS

We performed a latent class analysis (LCA) in 343 adult female participants of a multisite therapy trial on PTSD and SUD. We derived externalizing symptoms from the Assessment of DSM-IV Personality Disorders (ADP-IV) questionnaire. We assessed internalization using the Symptom Checklist-27 (SCL-27) and the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I). We collected substance use-related information using the Addiction Severity Index-Lite (ASI-lite).

RESULTS

LCA suggested four latent classes including an externalizing (10.8%), a moderately internalizing class (31.0%), and a highly internalizing class (22.0%), as well as a class with a low severity of psychological symptoms (36.3%). Externalizing participants used more substances than any other class, while the duration of substance use did not differ between groups. Regular use started at a significantly younger age among the members of the highly internalizing subgroup compared to the moderately internalizing and low severity participants, but at an older age compared to the externalizing group members.

CONCLUSIONS

The finding of two internalizing subgroups along with an externalizing and a low severity class emphasizes the heterogeneity and complexity of populations with PTSD and SUD. This heterogeneity bears implications for research among this group of patients, but also for their treatment, especially considering our results on differences in substance use.

Maternal alcohol dependence and harsh caregiving across parenting contexts: The moderating role of child negative emotionality

Parental alcohol dependence is a significant risk factor for harsh caregiving behaviors; however, it is unknown whether and how harsh caregiving changes over time and across parenting contexts for alcohol-dependent mothers. Furthermore, to our knowledge, no studies have examined whether and how distinct dimensions of child characteristics, such as negative emotionality modulate harsh caregiving among alcohol-dependent mothers. Guided by parenting process models, the present study examined how two distinct domains of children's negative emotionality-fear and frustration-moderate the association between maternal alcohol dependence and maternal harshness across discipline and free-play contexts. A high-risk sample of 201 mothers and their two-year-old children were studied over a one-year period. Results from latent difference score analyses indicated that harsh parenting among alcohol-dependent mothers increased over time in the more stressful discipline context, but not in the parent-child play context. This effect was maintained even after controlling for other parenting risk factors, including other forms of maternal psychopathology. Furthermore, this increase in harsh parenting was specific to alcohol-dependent mothers whose children were displaying high levels of anger and frustration. Findings provide support for specificity in conceptualizations of child negative emotionality and parenting contexts as potential determinants of maladaptive caregiving among alcohol-dependent mothers.

Side effects of induced lateral eye movements during aversive ideation

BACKGROUND AND OBJECTIVES

Eye Movement Desensitization and Reprocessing (EMDR) is a treatment for posttraumatic stress disorder. It uses a dual-task approach, in which patients recall an aversive memory while making lateral eye movements. Research has shown that this 'eye movements' intervention reduces subjective memory vividness and emotionality. This study examined whether it also reduces memory accuracy on a visual discrimination task.

METHODS

Participants (68 undergraduates) underwent an aversive conditioning phase, in which two pictures of male faces were followed by shock. Then they recalled one face with (experimental condition) and one without (control condition) making lateral eye movements. Finally, they completed a stimulus discrimination test with slightly different faces shortly after the intervention and one day later.

RESULTS

Results showed that the eye movements intervention led to increased false-positive rates one day later.

LIMITATIONS

Our intervention targeted newly formed memory rather than consolidated memory.

CONCLUSIONS

The results inform theory about EMDR's mechanisms of change and suggest that the treatment may have side effects regarding memory accuracy.

Impulsivity as a mediating factor in the association between posttraumatic stress disorder symptoms and substance use

OBJECTIVE

Posttraumatic stress disorder (PTSD) has been associated with heightened impulsivity and risk-taking behaviors, including higher rates of substance use than individuals without PTSD. Although a number of studies suggest that impulsivity is associated with substance use in PTSD, the specific role of impulsivity in this common pattern of comorbidity remains unclear. The current study investigated associations between PTSD symptoms, substance use patterns, and impulsivity in a sample of adults.

METHOD

A total of 2,967 participants were recruited online through Amazon's Mechanical Turk. Participants who did not report at least one Criterion A traumatic event on the Brief Trauma Questionnaire were excluded. The remaining 1,609 trauma-exposed individuals were placed into either the probable PTSD group (n = 406) or the trauma-exposed non-PTSD group (n = 1,203) based on their PTSD Checklist for Diagnostic and Statistical Manual of Mental Disorders, fifth edition (PCL-5) score. Impulsivity was assessed via a delay discounting measure and the brief UPPS-P (urgency, premeditation, perseverance, sensation seeking, and positive urgency) Impulsive Behavior Scale. Alcohol and cannabis were assessed using the Alcohol Use Disorders Identification Test (AUDIT) and Cannabis Use Disorders Identification Test (CUDIT-R) scales, respectively.

RESULTS

Probable PTSD participants exhibited steeper (more impulsive) delay discounting and endorsed more impulsive traits than participants in the trauma-exposed non-PTSD group. Moreover, the PTSD group reported significantly higher scores on both the AUDIT and CUDIT-R. Lastly, impulsive personality traits on the UPPS-P partially mediated the association between PTSD and both cannabis and alcohol use.

CONCLUSIONS

These findings suggest that trauma-exposed individuals who exhibit elevated PTSD symptoms show heightened impulsivity. It also appears that lower levels of impulsivity may serve as a protective factor among trauma-exposed individuals resilient to the development of PTSD. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Traumatic Events in Dual Disorders: Prevalence and Clinical Characteristics

Psychological trauma has been identified in substance use disorders (SUD) as a major etiological risk factor. However, detailed and systematic data about the prevalence and types of psychological trauma in dual disorders have been scarce to date. In this study, 150 inpatients were recruited and cross-sectionally screened on their substance use severity, psychological trauma symptoms, comorbidities, and clinical severity. One hundred patients fulfilled criteria for a dual disorder, while 50 patients were diagnosed with only SUD. Ninety-four percent of the whole sample suffered from at least one lifetime traumatic event. The prevalence rates of Posttraumatic Stress Disorder diagnosis for dual disorder and only SUD was around 20% in both groups; however, patients with dual disorder presented more adverse events, more childhood trauma, more dissociative symptoms, and a more severe clinical profile than patients with only SUD. Childhood maltreatment can also serve as a predictor for developing a dual disorder diagnosis and as a risk factor for developing a more complex and severe clinical profile. These data challenge our current clinical practice in the treatment of patients suffering from dual disorder or only SUD diagnosis and favor the incorporation of an additional trauma-focused therapy in this population. This may improve the prognosis and the course of the illness in these patients.

Influence of childhood trauma and post-traumatic stress symptoms on impulsivity: focusing on differences according to the dimensions of impulsivity

BACKGROUND

Impulsivity, a trait and multidimensional construct, is associated with a wide range of impulsive behaviours. Although it is well documented that childhood trauma (CT) affects impulsivity, few studies examine whether its effects depend on particular dimensions of impulsivity and the role post-traumatic stress symptoms play in the relationship between childhood trauma and different dimensions of impulsivity.

OBJECTIVE

This research aims to explore the relationships between CT, PTSD, and impulsivity in a heterogeneous clinical sample. We also sought to examine whether the influence of CT on impulsivity differs across the dimensions of impulsivity.

METHOD

We investigated the relationships between CT, symptoms of post-traumatic stress disorder (PTSD), and five dimensions of impulsivity using a sample of 162 non-psychotic psychiatric patients without neurocognitive diagnoses. Participants completed the Childhood Trauma Questionnaire (CTQ), Impact of Event Scale - Revised (IES), and the UPPS-P Impulsive Behaviour Scale (UPPS-P).

RESULTS

The results of structural equation modelling showed that CT is associated with PTSD symptoms, in addition to four of the five dimensions of impulsivity in the UPPS-P:positive urgency, negative urgency, lack of premeditation, and lack of perseverance. The indirect effect of CT through PTSD symptoms was significant only for the two types of urgency.

CONCLUSIONS

The results of this study suggest that interventions that aim to alleviate impulsive behaviour derived from high urgency should pay particular attention to the presence of CT and PTSD symptoms.

Posttraumatic stress, alcohol use severity, and alcohol use motives among firefighters: The role of anxiety sensitivity

INTRODUCTION

Firefighters are vulnerable to developing posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD). Anxiety sensitivity (AS) is a cognitive-affective mechanism with clinical relevance to both PTSD and AUD. The current study examined the potential role of AS in the association of PTSD symptomatology with alcohol use severity and alcohol use motives among a large sample of firefighters. Heightened PTSD and high AS were expected to be associated with alcohol use severity and coping-oriented alcohol use motives. Heightened PTSD symptomatology was expected to be indirectly associated with alcohol use severity and coping motives through high AS. Covariates included number of years in the fire service and the number of traumatic event types endorsed.

METHODS

Participants included 652 urban firefighters (93.3% male; M_age = 38.7, SD = 8.57). Firefighters completed an online questionnaire battery.

RESULTS

PTSD symptomatology was positively associated with alcohol use and coping motives. AS was positively associated with alcohol use coping motives but not alcohol use severity. AS partially explained the association between PTSD symptomatology and coping, conformity, and social motives, but did not significantly account for the relationship between PTSD symptom severity and enhancement motives or alcohol use severity.

CONCLUSIONS

Among firefighters, the association between PTSD and alcohol use coping, conformity, and social motives is partially accounted for by AS. Clinical and research implications are discussed.

Transdiagnostic preventative intervention for subclinical anxiety: Development and initial validation

Risk factors associated with the development of anxiety disorders have been identified; however, the development of preventive interventions targeting these risk factors is in the nascent stage. To date, preventive interventions have tended to target specific anxiety disorder symptoms (e.g., panic attacks). Although these interventions are effective at reducing risk for the targeted disorder (e.g., panic disorder), the focus of the intervention is narrow, thereby limiting the dissemination of these interventions. One approach that may broaden the scope of our prevention efforts is the development of a transdiagnostic intervention. Currently, transdiagnostic interventions have only been used in those with diagnosed conditions (e.g., anxiety disorders); however, it stands to reason that a transdiagnostic approach may also be helpful for those at-risk for developing anxiety disorders. The present study reported on the development and use of a brief preventative intervention for those with subclinical anxiety (i.e., worry, social anxiety). Participants were randomized into either a transdiagnostic preventative intervention, focused on reduction of safety aids, or a health focused control group. Participants consisted of sixty-nine individuals with subclinical levels of anxiety. Results revealed significant between group differences in the reduction of social anxiety, worry, and levels of impairment with the active intervention group relative to the control group. Further, change in safety aid utilization was a significant mediator in the association between intervention group and social anxiety and worry at Week 1; however, it was not a significant mediator at Month 1. Implications of these results and avenues for future research are discussed.

The impact of trauma characteristics on post-traumatic stress disorder and substance use disorder outcomes across integrated and substance use treatments

Proponents of complex post-traumatic stress disorder (PTSD) constructs suggest that specific trauma characteristics, such as earlier age of first trauma (trauma age) and higher number of traumas (trauma count), may obstruct PTSD symptom reduction in treatment. PTSD and substance use disorders (SUD) commonly co-occur, but the impact of trauma age and count on PTSD treatment responses in a comorbid PTSD and SUD sample is unclear. Further, no studies have examined the impact of trauma characteristics on SUD treatment outcomes or whether their impact on either PTSD or SUD outcomes varies if PTSD is directly addressed. A secondary analysis of a randomized controlled trial was conducted to examine: (1) whether trauma age and count influence comorbid PTSD and SUD (PTSD+SUD) responses during and following treatment; and (2) whether these effects differed across an exposure-based, integrated PTSD+SUD treatment (Concurrent Treatment of PTSD and Substance Use Disorders using Prolonged Exposure; COPE) and a SUD-only focused treatment (Relapse Prevention Therapy; RPT). Individuals with PTSD+SUD randomized to COPE (n = 39) or RPT (n = 43) provided weekly measurements of PTSD and SUD. Across COPE and RPT, earlier trauma age predicted reduced SUD improvement (B = -0.01, standard error = 0.00). Trauma count did not predict changes in PTSD or SUD during or following treatment. These findings suggest that excluding individuals from exposure-based, integrated treatments on the basis of trauma characteristics is not empirically supported. However, individuals with earlier trauma ages may require additional or unique clinical attention to improve their SUD outcomes.

PTSD's risky behavior criterion: Associated risky and unhealthy behaviors and psychiatric correlates in a nationally representative sample

Criterion E2 ("reckless or self-destructive behavior") was added to the DSM-5 posttraumatic stress disorder (PTSD) criteria to reflect the established association between PTSD and risky and unhealthy behaviors (RUBs); however, previous research has questioned its clinical significance. To determine whether criterion E2 adequately captures reckless/self-destructive behavior, we examined the prevalence and associations of RUBs (e.g., substance misuse, risky sexual behaviors) with criterion E2 endorsement. Further, we examined associations between criterion E2 and psychiatric conditions (e.g., depressive disorders, anxiety disorders) in a population-based sample of trauma-exposed adults. We analyzed data from the 2012-2013 National Epidemiologic Survey on Alcohol and Related Conditions (N = 36,309). The Alcohol Use Disorder and Associated Disabilities Interview Schedule-5 assessed lifetime DSM-5 psychiatric conditions and self-reported RUBs. Among trauma-exposed adults (n = 23,936), multiple logistic regressions examined criterion E2's associations with RUBs and psychiatric conditions. After adjusting for covariates, all RUBs were associated with E2 endorsement (AOR range: 1.58-3.97; most prevalent RUB among those who endorsed E2: greater substance use than intended [57.0 %]) except binge eating, and E2 endorsement was associated with increased odds of PTSD, bipolar disorder, substance use disorders, and schizotypal, borderline, and antisocial personality disorders (AOR range: 1.65-2.75), and decreased odds of major depressive disorder (AOR = 0.76). Results support the clinical significance of criterion E2 through identifying associated RUBs and distinct correlates. These results may inform screening and intervention strategies for at-risk populations.

The Role of Impulsivity in the Association Between Posttraumatic Stress Disorder Symptom Severity and Substance Use in Male Military Veterans

High rates of posttraumatic stress disorder (PTSD) and comorbid substance use disorder (SUD) are prevalent in military veterans. However, few studies have investigated impulsivity as a risk factor for engaging in substance use behavior for individuals who are experiencing PTSD symptoms. The present study evaluated impulsivity as a moderator of the association between PTSD symptoms and alcohol/drug use. Male military veterans (N = 106) completed self-report measures of alcohol use behavior, drug use behavior, and impulsivity. Participants also completed a structured diagnostic interview to assess for PTSD. The findings indicated that impulsivity moderated the relation between total PTSD symptoms and alcohol use, B = 0.01, p = .035, along with associations between alcohol use and two of the symptom clusters: PTSD reexperiencing symptoms, B = 0.01, p = .016; and PTSD avoidance/numbing symptoms, B = 0.01, p = .029. Veterans with high levels of impulsivity were at significantly higher risk of engaging in alcohol use than veterans with low-to-average levels. Impulsivity did not potentiate the relation between PTSD hyperarousal symptoms and alcohol use nor did it moderate the association between any of the PTSD variables and drug use. Impulsivity appears to serve as a significant risk factor for alcohol use, but not drug use, for male veterans experiencing PTSD symptoms. Future studies are necessary to replicate and expand upon these findings, particularly to facilitate the development of integrated evidence-based treatments that target both alcohol use and impulsivity within the context of PTSD.

Mindfulness as a predictor of cognitive-behavioral therapy outcomes in inner-city adults with posttraumatic stress and substance dependence

The co-occurrence of posttraumatic stress disorder (PTSD) and substance use disorders (SUD) is highly prevalent and difficult-to-treat. Mindfulness, defined as nonjudgmental attention to and awareness of present-moment experiences, represents a targetable mechanism with potential to predict and improve treatment outcomes for PTSD/SUD populations. We hypothesized that greater self-reported mindfulness at baseline (pre-treatment) would predict (a) lower end-of-treatment PTSD severity and (b) greater longest sustained abstinence during a 12-week cognitive-behavioral treatment program. Participants included 53 inner-city adults meeting at least four current symptoms of DSM-5 PTSD and current (DSM-IV) substance dependence (51% women; 75.5% African American; Mage = 45.42, SD = 9.99). Hierarchical regression analysis results indicated that higher levels of baseline mindfulness predicted lower end-of-treatment PTSD severity but not longest sustained abstinence from the primary substance of choice. Post hoc exploration of end-of-treatment PTSD symptom clusters indicated that higher baseline mindfulness predicted lower intrusion, negative alterations in cognitions and mood, and arousal and reactivity symptoms but not avoidance symptoms. Clinical and research implications are discussed.