Comparison of DSM-5 and proposed ICD-11 criteria for PTSD with DSM-IV and ICD-10: changes in PTSD prevalence in military personnel

Posttraumatic stress disorder prevalence and childbirth: update meta-analysis after the introduction of the DSM-5 and COVID-19 pandemic

PURPOSE

Meta-analyses were previously performed to estimate PTSD prevalence in the postpartum period. Significant events that could impact this outcome occurred in the last decade, such as the publication of the DSM-5 in 2013 and the COVID-19 pandemic in 2020. This systematic literature review with a meta-analysis addressed studies published after 2014 to estimate PTSD prevalence after childbirth.

METHOD

The methodological guidelines recommended by PRISMA were followed. The meta-analysis estimate was the proportion of PTSD cases. The restricted maximum likelihood (REML) was the method adopted for estimation in addition to multilevel random effect models. Subgroup analyses were performed to assess the impact of interest variables.

RESULTS

The estimated prevalence was 0.10 (95%CI: 0.8-0.13; I2 = 98.5%). No significant differences were found regarding the introduction of the DSM-5 (p = 0.73) or COVID-19 (p = 0.97), but instead, between low- and middle-income countries, e.g., the Middle East presents a higher prevalence (p < 0.01) than European countries.

CONCLUSIONS

There is a potential increase in PTSD prevalence rates after childbirth in the last decade not associated with the pandemic or the current diagnostic classification. Most studies showed a methodological fragility that must be overcome to understand this phenomenon better and support preventive actions and treatment for puerperal women.

Gender, sex and complex PTSD clinical presentation: a systematic review

Background: Post-traumatic stress disorder (PTSD) prevalence and clinical presentation reportedly vary with gender and/or sex. Equivalent complex PTSD (CPTSD) research is in its relative infancy and to date no systematic review has been conducted on this topic.Objective: To systematically review the literature and provide a narrative addressing the question of whether gender and/or sex differences exist in CPTSD prevalence and clinical presentation.Method: Embase, PsycINFO, PTSDpubs, PubMed, Web of Science, EThOS and Google Scholar were searched. Twelve papers were eligible for inclusion. Data were extracted and synthesised narratively.Results: Four themes were identified: (i) the reporting of gender and/or sex; (ii) index trauma; (iii) CPTSD prevalence rates; and (iv) CPTSD clinical presentation. Findings were mixed. Nine papers reported prevalence rates: eight found no gender and/or sex differences; one found higher diagnostic rates among women and/or females. Four papers reported clinical presentation: one reported higher cluster-level scores among women and/or females; two used single gender and/or sex samples; and one found higher scores in two clusters in men and/or males. Most papers failed to report in gender- and/or sex-sensitive ways.Conclusions: Gender- and sex-sensitive research and clinical practice is needed. Awareness in research and clinical practice is recommended regarding the intersect between identity and the experience and expression of complex trauma.

Childhood maltreatment and internalizing/externalizing disorders in trauma-exposed adolescents: Does posttraumatic stress disorder (PTSD) severity have a mediating role?

Childhood maltreatment is associated with wide-ranging psychopathology at all stages of life. In the current study, we investigated whether posttraumatic stress disorder (PTSD) severity mediated the association between childhood maltreatment and internalizing and externalizing disorders among 262 South African trauma-exposed adolescents (aged 12-18 years). Childhood maltreatment and PTSD symptom severity were assessed using the Childhood Trauma Questionnaire and the Child PTSD Checklist, respectively. Psychiatric disorders were assessed utilizing the Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime version and were grouped into internalizing or externalizing disorders. Hierarchal logistic regression was used to assess the association of childhood maltreatment subtype with internalizing and externalizing disorders, controlling for age and gender, with PTSD symptom severity added to the final model. We found that sexual abuse was significantly associated with internalizing disorders, although this effect was no longer significant when PTSD was added to the model demonstrating that PTSD mediated the association between sexual abuse and internalizing disorders. Physical abuse, but not PTSD, was associated with externalizing disorders. Physical abuse, emotional neglect, and PTSD were associated with comorbid internalizing and externalizing disorders. These findings have implications for intervention and prevention strategies targeted at trauma-exposed adolescents with a history of childhood maltreatment.

Association between different dimensions of anger and symptoms of post-traumatic stress disorder in at-risk cardiovascular patients during the COVID-19 pandemic

Introduction

The common connecting factor between PTSD and cardiovascular diseases lies in the disruption of the stress processing system. The COVID-19 pandemic has led to an increase in stress levels worldwide. Due to the life-threatening situation of affected risk patients, this also led to the accumulation of post-traumatic stress symptoms (PTSS). The influence of anger on cardiovascular diseases has hardly been investigated so far. The focus of this study is on anger regulation in cardiovascular risk patients. The COVID-19 pandemic is considered as an additional stressor in this study, but not as a separate entity. The hypothesis is that individuals with inward anger are more prone to post-traumatic stress disorder (PTSD).

Methods

As part of the routine examination, all patients who were hospitalized between January 1st, 2021 and May 31st, 2022 with high-risk cardiovascular diseases were included. A total of N = 153 (84.1%) subjects participated in the study. On admission, anger (STAXI-2) and PTSD (PCL-5) were assessed using questionnaires. The relationship between different domains of anger and PTSS was examined.

Results

Inwardly directed anger was more pronounced in this population than in a standard sample (+1 SD) and had a significant impact on the presence of PTSD (B = -0.72, p < 0.001). Additionally, correlations were found between inward-directed anger and PTSD, as well as all other anger expressions studied and the PTSD total score.

Discussion

It can be assumed that anger and its regulation are relevant factors for both cardiac diseases and PTSD. The study results can be used for prevention, rehabilitation and therapeutic measures. However, the impact of inner anger on PTSD is theoretical and based on statistical testing. A confirmatory longitudinal study is needed to substantiate these results.

PTSD as a Moderator of the Relationship Between the Distribution of Personal Resources and Spiritual Change Among Participants of Hostilities in Ukraine

The theory of conservation of resources (COR) can be used to search for mechanisms that explain spiritual changes caused by trauma. The present study aimed to verify whether PTSD could be a potential moderator between the distribution of personal resources and spiritual changes. The study included a total of 324 adults (75 women and 243 men) aged 18-74. The mean age was 34.3 (SD = 9.9). The Polish adaptation of Hobfoll's Conservation of Resources-Evaluation (COR-E), the posttraumatic stress disorder (PTSD) Checklist-Civilian Version and the Posttraumatic Growth Inventory were employed in the research. This study analyzed the spiritual change, which is one of the five domains of posttraumatic growth. The outcomes indicated the significant role of PTSD as a moderator of the relationships between 1) personal resources gain and spiritual change and 2) personal resources loss and spiritual change. PTSD is not a moderator in the relationship between assigning value to personal resources and spiritual change.

Posttraumatic Stress Disorder and Risk of Systemic Lupus Erythematosus Among Medicaid Recipients

OBJECTIVE

We studied posttraumatic stress disorder (PTSD), a severe trauma-related mental disorder, and systemic lupus erythematosus (SLE) risk in a large, diverse population enrolled in Medicaid, a US government-sponsored health insurance program for low-income individuals.

METHODS

We identified SLE cases and controls among patients ages 18-65 years enrolled in Medicaid for ≥12 months in the 29 most populated US states from 2007 to 2010. SLE and PTSD case statuses were defined based on validated patterns of International Classification of Diseases, Ninth Revision codes. Index date was the date of the first SLE code. Controls had no SLE codes but had another inpatient or outpatient code on the index date and were matched 1:10 to cases by age, sex, and race. Conditional logistic regressions calculated odds ratios (ORs) and 95% confidence intervals (95% CIs) for the association of PTSD with incident SLE, adjusting for smoking, obesity, oral contraceptive use, and other covariates.

RESULTS

A total of 10,942 incident SLE cases were matched to 109,420 controls. The prevalence of PTSD was higher in SLE cases, at 10.74 cases of PTSD per 1,000 person-years (95% CI 9.37-12.31) versus 7.83 cases (95% CI 7.42-8.27) in controls. The multivariable-adjusted OR for SLE among those with PTSD was 2.00 (95% CI 1.64-2.46).

CONCLUSION

In this large, racially and sociodemographically diverse US population, we found patients with a prior PTSD diagnosis had twice the odds of a subsequent diagnosis of SLE. Studies are necessary to clarify the mechanisms driving the observed association and to inform possible interventions.

Disorders Specifically Associated With Stress in ICD-11

Background

After almost three decades of ICD-10 use for diagnostic purposes, the World Health Organization has conducted a systematic and elaborate evaluation to revise the classification of mental disorders in this system. This revision resulted in the 11th version (ICD-11), introduced in 2022. As one new feature, the ICD-11 forms a new grouping of mental disorders specifically associated with stress.

Method

The current review presents an overview of the diagnostic features and cultural specifications of disorders specifically associated with stress. This grouping includes posttraumatic stress disorder and complex posttraumatic stress disorder, prolonged grief disorder, adjustment disorder, as well as two diagnoses for children, reactive attachment disorder and disinhibited social engagement disorder.

Results

Overall, there is evidence for the improved clinical utility and applicability of these disorders. The disorders have been defined in a parsimonious way by few features, but they suffice for scientific purposes as well.

Conclusion

However, more research is needed to evaluate assessments for the diagnoses and diagnostic features in the ICD-11.

A Systematic Chart Review of Adults with Post-Traumatic Stress Disorder: Data from a Tertiary Care Psychiatry Center in India

BACKGROUND

Post-traumatic stress disorder (PTSD) is an understudied construct in the psychiatric setting. The majority of existing Indian studies on PTSD focus on the general population or disaster-stricken communities. Here, we present data from a five-year retrospective chart review from a tertiary care psychiatric center in India.

METHODS

Medical records of adult patients (≥18 years) who had attended psychiatry outpatient services between April 1, 2015 and March 31, 2020 (five years) and were diagnosed with PTSD, as per ICD-10 criteria, were reviewed (n = 113). The relevant sociodemographic and clinical details were extracted using a semistructured pro-forma.

RESULTS

The percentage of adult patients with PTSD diagnosis in the five years was 0.22%. PTSD was more common in females (n = 65, 57.5%). Most patients had interpersonal trauma (n = 85, 75.2%), specifically sexual abuse (n = 47, 41.6%). The median age of onset was 22 years. All the patients had re-experiencing symptoms, with an equally high rate of avoidance (n = 109, 96.5%) and arousal symptoms (n = 110, 97.3%). 82%(93) had a comorbid psychiatric disorder, with mood disorder being the most common (n = 44, 38.9%). Males had a higher rate of comorbid substance use disorder (n = 14, 29.2%) and depression (n = 20,42%), and females had a higher rate of comorbid dissociative disorder (n = 13,20%). Most of the patients received non-trauma-focused psychological interventions, and only 18% (20) received evidence-based trauma-focused psychological interventions.

CONCLUSION

Interpersonal trauma, specifically sexual abuse, largely contributes to PTSD among adults attending psychiatric services. The need for trauma-focused psychological interventions is underscored.

A Scoping Review on the Prevalence and Determinants of Post-Traumatic Stress Disorder among Military Personnel and Firefighters: Implications for Public Policy and Practice

INTRODUCTION

Firefighters and military personnel are public safety personnel who protect the safety of individuals and their properties. They are usually exposed to traumatic events leaving them at risk of developing mental health conditions such as post-traumatic stress disorder (PTSD). Increasing concern is being raised regarding the mental health impacts, specifically PTSD, among military personnel and firefighters.

OBJECTIVE

There is an increased exposure of firefighters and military personnel to traumatic events and the attendant risk of developing post-traumatic stress disorder. It is crucial to ascertain the level of PTSD amongst this cohort and determinants to formulate policies and practices that mitigate the risk and protect public safety personnel. This scoping review sought to determine the prevalence of PTSD among this cohort globally and to explore determinants of this mental health condition.

METHODS

A literature search in databases including MEDLINE, CINAHL, PubMed, PsycINFO, and EMBASE was conducted electronically from May 2021 to 31 July 2021. Two reviewers independently assessed full-text articles according to the predefined inclusion criteria and screening process undertaken to identify studies for the review. Articles were screened with a third reviewer, resolving conflicts where necessary and further assessing them for eligibility. During article selection, the PRISMA checklist was adopted, and with the Covidence software, a total of 32 articles were selected for the final examination. For the eligible studies, data extraction was conducted, information was collated and summarized, and the findings were reported. Original qualitative and quantitative data on the prevalence and predictors of PTSD among veterans, military, and firefighters were reported.

RESULTS

The prevalence of PTSD was 57% for firefighters and 37.8% for military personnel. Demographic factors, job factors, social support, injuries, physical and psychological factors, and individual traits were the main predictors of PTSD in this cohort.

CONCLUSION

This information is vital for developing and implementing prevention and intervention strategies for PTSD in military personnel and firefighters. Recognizing and addressing factors that predict PTSD will help to improve mental wellbeing and increase productivity. More peer-reviewed studies are needed on the prevalence of PTSD amongst these cohorts.

A proposed mechanism for the MDMA-mediated extinction of traumatic memories in PTSD patients treated with MDMA-assisted therapy

Post-traumatic stress disorder (PTSD) is a devastating psychiatric disorder afflicting millions of people around the world. Characterized by severe anxiety, intrusive thoughts, pervasive nightmares, an assortment of somatic symptoms, associations with severe long-term health problems, and an elevated risk of suicide, as much as 40-70% of patients suffer from refractory disease. 3,4-Methylenedioxy-methamphetamine (MDMA), like classic psychedelics such as psilocybin, have been used to enhance the efficacy of psychotherapy almost since their discovery, but due to their perceived potential for abuse and inclusion on USFDA (United States Food and Drug Administration) schedule 1, research into the mechanism by which they produce improvements in PTSD symptomology has been limited. Nevertheless, several compelling rationales have been explored, with the pro-social effects of MDMA thought to enhance therapeutic alliance and thus facilitate therapist-assisted trauma processing. This may be insufficient to fully explain the efficacy of MDMA in the treatment of psychiatric illness. Molecular mechanisms such as the MDMA mediated increase of brain-derived neurotrophic factor (BDNF) availability in the fear memory learning pathways combined with MDMA's pro-social effects may provide a more nuanced explanation for the therapeutic actions of MDMA.

A Latent Class Analysis on Symptoms of Prolonged Grief, Post-Traumatic Stress, and Depression Following the Loss of a Loved One

BACKGROUND

The loss of a significant other can lead to variety of responses, including prolonged grief disorder (PGD), posttraumatic stress disorder (PTSD), and depression. The aim of this study was to replicate and extend previous research that indicated that three subgroups of bereaved individuals can be distinguished based one similar post-loss symptom profiles using latent class analysis (LCA). The second aim was to examine whether sociodemographic and loss-related characteristics as well as the extent of meaning making were related to classes with more pervasive psychopathology.

METHODS

Telephone-based interviews with 433 Dutch and German speaking persons who had lost a significant other at last 6 months earlier were conducted. Self-rated PGD, PTSD, and depression symptoms were assessed. LCA was conducted and correlates of class-membership were examined using the 3step approach.

RESULTS

The LCA resulted in three distinct classes: a no symptoms class (47%), a moderate PGD, low depression/PTSD class (32%), and a high PGD, moderate depression/PTSD class (21%). A multivariate analysis indicated that female gender, a shorter time since loss, an unexpected loss and less meaning made to a loss were significantly associated with membership to the moderate PGD, low depression/PTSD and high PGD, moderate depression/PTSD class compared to membership to the no symptom class. Losing a child or spouse, a shorter time since loss, and having made less meaning to the loss further distinguished between the high PGD, moderate depression/PTSD symptom class and the moderate PGD, low depression/PTSD class.

DISCUSSION

We found that the majority of individuals coped well in response to their loss since the no symptom class was the largest class. Post-loss symptoms could be categorized into classes marked by different intensity of symptoms, rather than qualitatively different symptom patterns. The findings indicate that perceiving the loss as more unexpected, finding less meaning in the loss, and loss-related factors, such as the recentness of a loss and the loss of a partner or child, were related to class membership more consistently than sociodemographic factors.

Equine-assisted psychotherapy with traumatized couples-Improvement of relationship quality and psychological symptoms

Many traumatised individuals suffering from deployment related PTSD report severe problems in their relationships. Up until now, the therapeutic interventions used by the German Armed Forces have rarely targeted these problems through the integration of partners. For this reason, a Program designed specifically for couples was developed. In this prospective study equine-assisted psychotherapy was applied to soldiers and their spouses. The study population consisted of n = 36 couples, divided in n = 20 therapy group with a inpatient equine-assisted intervention and a 16-couples control group. After the intervention, numerous significant improvements occurred in the therapy group in the areas of current, somatic and communication problems, depressive symptoms and partnership quality but not in the control group. PTSD was reduced significantly on the sub-scale associated with negative thoughts. These results show that the intervention is an effective way to improve partnership quality and reduce the stressors that the partners of afflicted service members face.

Matching the Symptom Profile of Adolescent Disaster Survivors with Changing Diagnostic Criteria of Posttraumatic Stress Disorder: Focus on ICD-11

BACKGROUND

Considering recent changes in the diagnostic guidelines for posttraumatic stress disorder (PTSD), it has become imperative to review their influence, especially on the symptoms related to children and adolescent victims of disasters. We intended to assess the profile of posttraumatic stress symptoms (PTSS) of adolescents following an earthquake, especially the gender differences, in relation to the changing diagnostic guidelines, particularly ICD-11.

METHODS

In a cross-sectional study, PTSS and functional impairments were evaluated in school-going adolescents in Nepal, one year after the 2015 earthquake, using the Child Posttraumatic Stress Scale (CPSS).

RESULTS

A considerable proportion of adolescent survivors of the earthquake had PTSS. Most common ones were intrusive thoughts (46.7%), avoiding thoughts, conversations and feelings about the disaster (44.2%), decreased interest in activities (40.0%), distress with reminders (35.6%), and concentration problems (35.6%). Females had a higher prevalence for all the PTSS compared with males, except for avoiding thought, conversations, feelings, and being overly careful/vigilant. Proportion of adolescents who met symptomatic criteria for PTSD diagnosis in different systems ranged from 14.7% in DSM-5 to 15.6% in ICD-11 three-factor model, and 22.2% in DSM-IV and 31.7% in ICD-10. Inclusion of the criterion of significant functional impairment changed the proportions to 10.0%, 10.3%, 12.8%, and 16.4%, respectively. In all of the diagnostic systems, higher proportions of females had possible PTSD.

CONCLUSION

Adolescent females had a higher prevalence for most of the PTSS and at the diagnostic level. It appears that for adolescents, diagnosis of PTSD in ICD-11 has become more robust with a focus on core symptoms and having a functional impairment criterion.

The effects of posttraumatic stress disorder symptoms on educational functioning in student veterans

Posttraumatic stress disorder (PTSD) occurs at high rates among student veterans and is known to negatively impact educational functioning; however, the unique effects of PTSD are less clear, given that PTSD is highly comorbid with many other conditions that could potentially affect educational functioning. The present study had two objectives: (a) to determine the impact of PTSD symptom severity on educational functioning after accounting for demographic variables, traumatic brain injury, and commonly co-occurring mental health conditions; and (b) to identify which symptom clusters of PTSD have the greatest impact on educational functioning. Educational functioning and other commonly occurring mental health conditions were assessed cross-sectionally among 90 student veterans. Traumatic brain injury and major depressive disorder (MDD) were initially associated with impaired educational functioning; however, after adding PTSD into the final model, only PTSD (β = .44, p < .001) and MDD (β = .31, p = .001) remained associated with educational impairment. Follow-up analyses indicated that the reexperiencing symptom cluster was most strongly associated with impaired educational functioning (β = .28, p = .031). Overall, these results suggest that PTSD symptoms-especially reexperiencing symptoms-may be a driving force behind impaired educational impairment, even after accounting for other commonly co-occurring mental health conditions. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Coronavirus syndrome: COVID-19 psychotrauma

The authors propose term "coronavirus syndrome" for the mental disorder that is a psychical response to the global problem of COVID-19 pandemic. This syndrome will affect up to 10% of the population and we could already observe acute stress reactions to the spread of the infection and changes in people's ordinary lifestyle. However, the most severe response will be seen later, in this case the catastrophe is similar to the clinical picture of post-traumatic stress disorder. The problem is that coronavirus syndrome will affect the working capacity of population at the period, when economical recovery is essential. The risk groups are health caregivers who worked in COVID departments; patients recovered from a severe form of the disease; people who have lost their loved ones; and those who have suffered significant financial losses or lost their jobs. Adequate prophylaxis of coronavirus syndrome especially in high-risk groups are important for maintaining global mental health and economy.

Cognitive behavioral social rhythm group therapy versus present centered group therapy for veterans with posttraumatic stress disorder and major depressive disorder: A randomized controlled pilot trial

BACKGROUND

Cognitive Behavioral Social Rhythm Group Therapy (CBSRT) is a chronobiologically-informed group therapy designed to stabilize social rhythms in veterans with comorbid combat-related PTSD and major depressive disorder (MDD). This randomized controlled pilot trial is the first to examine feasibility and preliminary efficacy of group CBSRT as compared to group Present Centered Therapy (PCT), a well-characterized active attention, psychotherapy condition.

METHODS

A total of 43 male veterans with combat-related PTSD, MDD, and disruptions in sleep or daily routine were randomly assigned to CBSRT or PCT. Therapy was provided weekly in a group modality for 12 weeks. Follow-up feasibility and gold-standard PTSD, MDD, and subjective/objective sleep assessments were conducted at post-treatment, 3 months, and 6 months post-treatment.

RESULTS

Feasibility results demonstrated that veterans assigned to CBSRT had higher rates of attendance than veterans assigned to PCT. Both CBSRT and PCT were associated with improvements in PTSD and MDD symptoms, sleep efficiency, and number of awakenings; there were no differences between group therapies on these indices. Veterans in the CBSRT group had a greater reduction in the number of nightmares than veterans in the PCT group.

LIMITATIONS

Preliminary results must be qualified by the small sample size.

CONCLUSIONS

Group CBSRT may be more feasible for veterans than PCT. Both CBSRT and PCT were associated with improvements in psychiatric symptoms with few differences between conditions. CBSRT is a promising new group therapy that may help address the high-rate of PTSD therapy attrition in combat veterans.

CLINICAL TRIAL REGISTRATION

NCT00984698.

Reduced gray matter volume in the left prefrontal, occipital, and temporal regions as predictors for posttraumatic stress disorder: a voxel-based morphometric study

The concept of acute stress disorder (ASD) was introduced as a diagnostic entity to improve the identification of traumatized people who are likely to develop posttraumatic stress disorder (PTSD). Neuroanatomical models suggest that changes in the prefrontal cortex, amygdala, and hippocampus play a role in the development of PTSD. Using voxel-based morphometry, this study aimed to investigate the predictive power of gray matter volume (GMV) alterations for developing PTSD. The GMVs of ASD patients (n = 21) were compared to those of PTSD patients (n = 17) and healthy controls (n = 18) in whole-brain and region-of-interest analyses. The GMV alterations seen in ASD patients shortly after the traumatic event (T1) were also correlated with PTSD symptom severity and symptom clusters 4 weeks later (T2). Compared with healthy controls, the ASD patients had significantly reduced GMV in the left visual cortex shortly after the traumatic event (T1) and in the left occipital and prefrontal regions 4 weeks later (T2); no significant differences in GMV were seen between the ASD and PTSD patients. Furthermore, a significant negative association was found between the GMV reduction in the left lateral temporal regions seen after the traumatic event (T1) and PTSD hyperarousal symptoms 4 weeks later (T2). Neither amygdala nor hippocampus alterations were predictive for the development of PTSD. These data suggest that gray matter deficiencies in the left hemispheric occipital and temporal regions in ASD patients may predict a liability for developing PTSD.

Same same but different? DSM-5 versus ICD-11 PTSD among traumatized refugees in Germany

OBJECTIVE

The recent changes in diagnostic criteria for posttraumatic stress disorder (PTSD) in the 5th edition of the DSM and the 11th edition of the ICD marked a shift towards two perspectives on the same disorder. Previous studies indicate lower prevalence rates for the ICD-11-model as compared to the DSM-5 model. Main purpose of this study is to examine the concordance between ICD-11 and DSM-5 PTSD rates, and to assess the overlap of the two PTSD definitions with anxiety and depression among refugees.

METHODS

167 traumatized refugees were assessed with the PCL-5 for the DSM-5 PTSD model. A subset of the items was used as criteria for the ICD-11 model. Depression and anxiety were measured with the HSCL-25.

RESULTS

The DSM-5-algorithm for PTSD identified significantly more cases (n = 147; 88%) than the ICD-11 algorithm (80%; n = 134). Level of agreement between the diagnostic systems was substantial (Κ = 0.67, p < .001) and 9% (n = 15) met criteria under one diagnostic system only. Overlap with depression and anxiety was high under both diagnostic systems.

CONCLUSION

PTSD rates indicated a highly distressed sample of survivors of war and trauma. Our data provide further evidence that the DSM-5 diagnoses a larger number of persons than the ICD-11. Although the level of agreement was substantial, the observed discrepancies represent a challenge for research and practice to reliably identify individuals with PTSD. Especially for refugees, this might affect their access to mental health care and appropriate treatment during an asylum procedure.

Adaptive Information Processing Theory: Origins, Principles, Applications, and Evidence

This paper describes the origins, principles, applications, and evidence related to Adaptive Information Processing (AIP) theory. AIP theory provides the theoretical underpinning of Eye Movement Desensitization and Reprocessing (EMDR) therapy. AIP theory was developed to explain the observed results of EMDR therapy delivered to individuals experiencing trauma and PTSD. The AIP model hypothesizes that maladaptively stored memories of trauma create obstacles to rational processing of information, which occurs in the prefrontal cortex area of the brain. Bilateral stimulation, through eye movements or other mechanisms, is hypothesized to remove the obstacles and permit complete processing of the memory, leading to a reduction in trauma symptoms. EMDR therapy, with the AIP model as rationale, has been effectively used in the treatment of PTSD. Evidence in support of AIP theory is emerging as some promising results have been shown in studies that rely on measuring various types of physiological changes that occur during EMDR therapy.

Prevalence and comorbidity of the ICD-11 and DSM-5 for PTSD caseness with previous diagnostic manuals among the Japanese population

Background: The diagnostic criteria for posttraumatic stress disorder (PTSD) differ between DSM-5 and ICD-11, which may affect the estimation of prevalence. Objective: To investigate the concordance of ICD-11 and DSM-5, as compared to ICD-10 and DSM-IV, regarding PTSD caseness among Japanese people who had experienced different potentially traumatic events. In addition, we estimated the comorbidity with major depressive disorder and generalized anxiety disorder according to these four diagnostic manuals. Method: A web-based survey (n = 6,180) was conducted from November 2016 to March 2017. Participants completed the PTSD Checklist for DSM-5, and other standardized measures of PTSD, depression, and anxiety. Results: The prevalence of PTSD caseness according to ICD-11 was significantly lower as compared to DSM-IV, DSM-5, and ICD-10. Cohen's kappa between DSM-5 and ICD-11 was 0.79, indicating substantial agreement. Comorbidity with depression was significantly higher in unique DSM-5 cases than in unique ICD-11 cases. Unique DSM-5 PTSD cases were significantly stronger functionally impaired than unique ICD-11 PTSD cases. Conclusions: Although requiring fewer items, the ICD-11 showed substantial agreement with DSM-5 regarding PTSD caseness. The lower comorbidity rates in unique cases may support the concept of the ICD-11 which intends to reduce comorbidity by identifying the core elements of PTSD.

A decennial review of psychotraumatology: what did we learn and where are we going?

On 6 December 2019 we start the 10th year of the European Journal of Psychotraumatogy (EJPT), a full Open Access journal on psychotrauma. This editorial is part of a special issue/collection celebrating the 10 years anniversary of the journal where we will acknowledge some of our most impactful articles of the past decade (also discussed below and marked with * in the reference list). In this editorial the editors present a decennial review of the field addressing a range of topics that are core to both the journal and to psychotraumatology as a discipline. These include neurobiological developments (genomics, neuroimaging and neuroendocrine research), forms of trauma exposure and impact across the lifespan, mass trauma and early interventions, work-related trauma, trauma in refugee populations, and the potential consequences of trauma such as PTSD or Complex PTSD, but also resilience. We address innovations in psychological, medication (enhanced) and technology-assisted treatments, mediators and moderators like social support and finally how new research methods help us to gain insights in symptom structures or to better predict symptom development or treatment success. We aimed to answer three questions 1. Where did we stand in 2010? 2. What did we learn in the past 10 years? 3. What are our knowledge gaps? We conclude with a number of recommendations concerning top priorities for the future direction of the field of psychotraumatology and correspondingly the journal.

Relations between PTSD and depression symptom clusters in samples differentiated by PTSD diagnostic status

Co-occurring posttraumatic stress disorder (PTSD) and depression following traumatic experiences are cumulatively associated with functional impairment. To examine mechanisms for the PTSD-depression comorbidity, we investigated their cluster-level associations. Using data obtained from Amazon's Mechanical Turk platform, 368 trauma-exposed participants were split into two subsamples: those with (n = 163) and without (n = 185) probable PTSD. In both subsamples, confirmatory factor analyses indicated an optimal seven-factor PTSD Hybrid Model. Results of Wald tests of parameter constraints indicated that, in both subsamples, PTSD's dysphoric arousal cluster strongly related to somatic depression compared to all/most other PTSD Hybrid Model clusters. Additionally, in both subsamples, PTSD's negative affect, externalizing behaviors, and anhedonia clusters each strongly related to non-somatic depression compared to PTSD's anxious arousal cluster. Our results indicated that PTSD's dysphoric arousal symptoms mainly accounted for PTSD's shared variance with somatic depression, while the negative alterations in cognitions and mood (NACM)/dysphoria and arousal symptoms (primarily externalizing behaviours) mainly accounted for PTSD's shared variance with non-somatic depression. Our findings have implications for the discussion on PTSD's specific/non-specific clusters tied to diagnostic modifications, for understanding mechanisms underlying PTSD-depression comorbidity, and for the use of transdiagnostic and multi-component treatment protocols for PTSD-depression symptoms.