Dissociation in trauma: a new definition and comparison with previous formulations

A prospective study of nightmare disorder among Chinese adults in Hong Kong: Persistence and mental health outcomes

OBJECTIVES

Previous studies showed that nightmares are prevalent and are associated with negative health outcomes. However, no empirical data is available demonstrating the extent to which nightmare disorder persists over time. Current literature provides a limited understanding of the trajectory and wider mental health outcomes of nightmare disorder. This longitudinal study examined the persistence and mental health outcomes of nightmare disorder.

METHODS

A total of 230 Hong Kong Chinese adults completed standardized assessments twice with an interval of about 6 months.

RESULTS

Over half (66.7%) of the participants with probable nightmare disorder at baseline remained to meet the DSM-5 criteria for the disorder at follow-up. Participants with probable nightmare disorder at baseline were significantly more likely to screen positive for PTSD (82.1% vs 18.3%) (p < .001) (p < .001), and they reported higher rates of mental health service usage at both timepoints (p = .001 to .003). Baseline nightmare disorder severity was negatively associated with subsequent self-rated mental health (β = -.151, p = .010) and self-esteem (β = -.141, p = .009) and it also predicted subsequent PTSD symptoms (β = .122, p = .012).

CONCLUSIONS

This study provides first empirical data showing that nightmare disorder could be persistent over time. Nightmare disorder symptoms are associated not only with PTSD symptoms but also with a broader range of mental health issues. This study points to the public health importance of identifying and managing nightmare disorder symptoms in the community. Additionally, the presence of nightmare disorder symptoms may be a helpful indicator for identifying post-traumatic stress.

The Dissociative Subtype of Post-Traumatic Stress Disorder: A Systematic Review of the Literature using the Latent Profile Analysis

A PTSD subtype with dissociative symptoms (D-PTSD) was included in the DSM-5 recognizing the existence of a more severe form of PTSD, associated to past trauma, high comorbidity, and complex clinical management. As research is rapidly growing and results are inconsistent, a better investigation of this subtype is of primary importance. We conducted a systematic review of studies using Latent Profile Analysis to investigate the existence of a D-PTSD subtype. Covariates of D-PTSD were included, to understand additional symptoms, risk factors and comorbidities. The search was performed on PubMed, EBSCOHost, and PTSDPubs according to 2020 PRISMA guidelines. Eligible articles assessed trauma exposure, PTSD symptoms and diagnosis, and dissociation, in adult samples. 13 of 165 articles met the inclusion criteria. All identified a dissociative subtype of PTSD, mainly characterized by higher levels of depersonalization and derealization. D-PTSD profile sometimes presented other dissociative symptoms, such as gaps in awareness and memory, other comorbid disorders, and a history of abuse. Despite some limitations, this review supports the existence of a dissociative subgroup of individuals among those with PTSD. More rigorous studies are needed to clarify these findings and their clinical implications.

Is Childhood Trauma a Risk Factor for Resistant Epilepsy?

Childhood traumas have been considered risk factors for many psychiatric disorders. Recent studies demonstrated that childhood traumas can also be considered risk factors for neurological diseases. In this context, the objective of this study is to investigate the effects of childhood traumas on treatment resistance in patients with epilepsy. The study sample consisted of 85 epilepsy patients, 40 male and 45 female, who were diagnosed and followed up by a neurologist. Of these patients, 45 were being followed up with the diagnosis of refractory epilepsy, and 40 were being followed up with the diagnosis of treatment-responsive epilepsy. Cranial magnetic resonance imaging and electroencephalography were performed on all patients. In addition, all patients were administered childhood trauma questionnaire (CTQ) and Hamilton depression rating scale (HAM-D). Epilepsy patients included in the study were divided into refractory epilepsy and treatment-responsive epilepsy groups. There was no significant difference between the groups in sociodemographic characteristics. On the other hand, total CTQ and all CTQ subscale scores and HAM-D scores were significantly higher in the refractory epilepsy group than in the treatment-responsive epilepsy group. This study demonstrates that childhood traumas may contribute to treatment resistance in epilepsy patients. Therefore, it is recommended that a history of childhood traumas be routinely queried in the treatment of epilepsy patients.

Is Dissociation a Fundamental Component of ICD-11 Complex Posttraumatic Stress Disorder?

ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) is a disorder of six symptom clusters including reexperiencing, avoidance, sense of threat, affective dysregulation, negative self-concept, and disturbed relationships. Unlike earlier descriptions of complex PTSD, ICD-11 CPTSD does not list dissociation as a unique symptom cluster. We tested whether the ICD-11 CPTSD symptoms can exist independently of dissociation in a nationally representative sample of adults (N = 1,020) who completed self-report measures. Latent class analysis was used to identify unique subsets of people with distinctive symptom profiles. The best fitting model contained four classes including a "low symptoms" class (48.9%), a "PTSD" class (14.7%), a "CPTSD" class (26.5%), and a "CPTSD + Dissociation" class (10.0%). These classes were related to specific adverse childhood experiences, notably experiences of emotional and physical neglect. The "PTSD," "CPTSD," and "CPTSD + Dissociation" classes were associated with a host of poor health outcomes, however, the "CPTSD + Dissociation" class had the poorest mental health and highest levels of functional impairment. Findings suggest that ICD-11 CPTSD symptoms can occur without corresponding dissociative experiences, however, when CPTSD symptoms and dissociative experiences occur together, health outcomes appear to be more severe.

The Relationship Between Dissociation and Complex Post-Traumatic Stress Disorder: A Scoping Review

Complex post-traumatic stress disorder (CPTSD) has recently been recognized as an official psychiatric diagnosis in ICD-11, after years of research and advocacy in the field. It has been suggested that dissociative symptoms are a major feature of CPTSD. This scoping review aimed to summarize the existing knowledge base on the relationship between dissociation and CPTSD, and to identify relevant research gaps. We searched the two largest and most widely used academic databases (i.e., the Web of Science and Scopus databases) and the ProQuest database and identified original studies published in English relevant to our research questions, namely: (1) Would CPTSD be associated with dissociative symptoms? 2) How common are dissociative symptoms among people with CPTSD? (3) What are the correlates of dissociative symptoms among people with CPTSD? In all, 26 studies were included. We found 10 studies which reported that people with CPTSD scored significantly higher on a dissociation measure than those without CPTSD, and 11 studies reported a positive correlation between CPTSD symptoms and psychoform/somatoform dissociation scores. While very few studies reported the prevalence and correlates of dissociative symptoms among people with CPTSD, there may be a considerable subgroup of people with CPTSD who have clinically significant levels of dissociative symptoms (e.g., 28.6-76.9%). Dissociation may also be associated with other comorbidities (e.g., DSM-IV Axis II features, shame, somatic symptoms) in people with CPTSD. We recommend that more studies are needed to investigate the prevalence of dissociative symptoms among people with CPTSD and examine how these symptoms are associated with other comorbid conditions and clinical needs in this vulnerable group.

The (In)flexible self: Psychopathology, mindfulness, and neuroscience

Clinical and neuroscientific evidence indicates that transdiagnostic processes contribute to the generation and maintenance of psychopathological symptoms and disorders. Rigidity (inflexibility) appears a core feature of most transdiagnostic pathological processes. Decreasing rigidity may prove important to restore and maintain mental health. One of the primary domains in which rigidity and flexibility plays a role concerns the self. We adopt the pattern theory of self (PTS) for a working definition of self. This incorporates the pluralist view on self as constituted by multiple aspects or processes, understood to constitute a self-pattern, i.e. processes organized in non-linear dynamical relations across a number of time scales. The use of mindfulness meditation in the format of Mindfulness Based Interventions (MBIs) has been developed over four decades in Clinical Psychology. MBIs are promising as evidence-based treatments, shown to be equivalent to gold-standard treatments and superior to specific active controls in several randomized controlled trials. Notably, MBIs have been shown to target transdiagnostic symptoms. Given the hypothesized central role of rigid, habitual self-patterns in psychopathology, PTS offers a useful frame to understand how mindfulness may be beneficial in decreasing inflexibility. We discuss the evidence that mindfulness can alter the psychological and behavioral expression of individual aspects of the self-pattern, as well as favour change in the self-pattern as a whole gestalt. We discuss neuroscientific research on how the phenomenology of the self (pattern) is reflected in associated cortical networks and meditation-related alterations in cortical networks. Creating a synergy between these two aspects can increase understanding of psychopathological processes and improve diagnostic and therapeutic options.

Assessing malingering and personality styles in dissociative identity disorder: a case study

Dissociative Identity Disorder (DID), formerly Multiple Personality Disorder, involves two or more distinct identities controlling behaviour, stemming from trauma-related dissociation. Understanding DID's cognitive, neural, and psychometric aspects remains a challenge, especially in distinguishing genuine cases from malingering. We present a case of a DID patient with nine identities, evaluated to rule out malingering. Using the Millon Index of Personality Styles, we assessed the primary and two alternate identities, revealing marked differences. High consistency scores support validity. We suggest employing personality inventories beyond symptomatology to characterise dissociative identities' consistency and adaptation styles, aiding in malingering assessments in future studies.

"I'm in a Bloody Battle without Being Able to Stop It": The Dissociative Experiences of Child Sexual Abuse Survivors

Dissociation in child sexual abuse (CSA) survivors remains under-recognized and diagnosed, partly because of the difficulties involved in identifying dissociative symptoms. Qualitative research can contribute to a better understanding of the lived experiences of dissociation. This study focused on the experiences of dissociation in the context of CSA. In all, 22 female incest survivors, all diagnosed with different dissociative disorders, provided narratives about their experiences of dissociation. The narratives were analyzed using interpretative phenomenological analysis. The narrative analysis revealed four central themes. The first theme deals with reliving the experience of the abuse. The second theme refers to the experience of disconnection from the body, the self, and the surroundings. The third theme covers the lack of coherence in the narrative, and the fourth theme describes the bridge between voluntary controlled and nonvoluntary uncontrolled use of dissociation. The data are discussed in light of several traumagenic constructs, including a lack of self-sense, being entrapped in a victim-aggressor relationship, and distorted time perception. It is suggested that the extent to which participants can control their dissociation and the coherency of their narratives reflects the severity of their dissociation. Clinicians can consider helping clients use dissociation as an adaptive defense mechanism.

How do Patients Diagnosed with Dissociative Identity Disorder Experience Conflict? A Qualitative Study

The role and nature of conflict in the development and manifestation of dissociative identity disorder (DID) remains underexplored beyond theoretical deduction. In this qualitative instrumental case study, we explored the subjective experience and nature of conflict in a group of adult psychiatric patients diagnosed with DID. We purposively selected typed transcriptions of 28 previously recorded in-depth individual interviews with 15 patients, their audio recordings and associated field notes. The data were thematically analyzed and constant comparison was applied. Two main themes emerged from the transcriptions, namely, participants' experiences of having one or more incompatible and conflicting worldviews about their DID, and the type and nature of conflict that arises between dissociative identities, i.e., conflict of information in awareness, conflicting actions or behaviors, conflicting emotions, conflicting goals, conflicting values, and a battle of wills. Patients with DID have contextually and culturally variable comprehension of the origin of their DID. Conflict between dissociative identities was pervasive, multifaceted, and exacerbated by a lack of awareness between identities. The study provides insight into the complexities of conflict between dissociative identities, as well as highlights the role of inter-identity awareness in conflict.

Association of Dissociation with Suicide Attempt and Non-Suicidal Self Injury in Adolescents with a History of Sexual Abuse

Objective: Dissociative symptoms are considered risk factors for suicide and non-suicidal self-injury (NSSI). In this study, the relationship between suicidal behaviors and NSSI with dissociative symptoms in adolescents with a history of Child Sexual Abuse (CSA) was investigated. Methods: A total of 100 adolescents with a history of CSA were evaluated with a detailed forensic psychiatric interview. Dissociative symptoms were measured with the self-report Adolescent Dissociative Experiences Scale (A-DES) and the parent-reported Child Dissociative Checklist (CDC). Results: While dissociative symptoms did not differ between adolescents with and without suicide attempts (CDC; p = .068 and A-DES; p = .060), they were significantly higher in adolescents with non-suicidal self-harming behavior (CDC; p < .001 and A-DES; p = .001). Suicide attempts and NSSI were more common in those who reported genital touching as a type of sexual abuse (respectively, p = .003; p = .048). In regression analysis; history of psychiatric treatment (OR = 9.09 [95% CI = 1.52, 54.29]) and NSSI (OR = 8.18 [95% CI = 2.01, 33.23]) were independently associated with suicide attempts. In addition, parent-reported dissociative symptoms (CDC scores) (OR = 1.27 [95% CI = 1.06, 1.53] and suicide attempt (OR = 8.09 [95%CI = 1.96,33.42] showed independent association with NSSI. Conclusions: Dissociative symptoms may be predictive factors for NSSI and should be considered in risk assessment of adolescents with a history of CSA.

Examining the 4-D Model in Persons Enrolled in the Top DD Internet Intervention

The 4-dimensional (4-D) model of trauma-related dissociation differentiates between dissociative experiences involving trauma-related altered states of consciousness and symptoms of distress that do not appear to involve alterations in normal waking consciousness across four phenomenological dimensions (i.e., our experience of time, thought, body, and emotions). The current study evaluated hypotheses associated with the 4-D model using analyses of variance and correlation analyses in individuals with a primary diagnosis of a trauma-related dissociative disorder who were participating in the TOP DD internet study involving a combination of in-person psychotherapy and an online psychoeducational program (n = 111). Intrusive memories of traumatic events were more frequently endorsed than flashbacks, but emotional numbing was more frequently endorsed than other forms of affect dysregulation. Negative thoughts and emotion dysregulation were more strongly intercorrelated than were voice hearing and emotional numbing. Distress symptoms were more strongly associated with PTSD symptoms and difficulties in emotion regulation, whereas experiences of depersonalization were more strongly associated with dissociative self-states. Greater reduction in distress symptoms was also seen in comparison with trauma-related altered states of consciousness over the course of the combined psychotherapy and internet-based psychoeducational intervention. Overall, results continue to suggest that measures of distress and dissociative experiences can be distinguished by measures of symptom frequency, co-occurrence, and convergence with other measures of distress vs. dissociation albeit that results varied across the four phenomenological dimensions that were surveyed.

Exploring the Utility and Personal Relevance of Co-Produced Multiplicity Resources with Young People

Multiplicity, the experience of more than one self in the body, is an under-researched area of young people's mental health. The aim of this study was to explore the perspectives of experts-by-experience within a community sample regarding two specific resources: a co-produced self-help guide about multiplicity for adolescents, and a set of guidelines for supporting someone who identifies as 'multiple'. 34 participants (Mage= 22.06, 2.26 SD; 15F, 1M, 18NBG) completed an online survey consisting of open-ended and Likert scale questions to assess the language, utility, transferability and therapeutic impact of the materials. Descriptive statistics and a Foucauldian-informed Narrative Analysis were employed to analyse responses, producing a summary of utility and two narrative chapters. The emergent chapters, 'Breaking the Stigma' and 'Recognising the Many', highlight the need for greater understanding and awareness of multiplicity, with psychoeducation materials viewed as helpful. Inclusive language can reduce stigma and normalise multiplicity as a response to trauma. With greater understanding, practitioners and researchers can collaborate with young people through trauma wise care, providing multiplicity sensitive language and support. Overall, the term 'parts' was viewed as problematic by the participants as it could imply the plural system is not coexisting as a whole. Additionally, opinions varied as to how much diagnostic language could and should be used to describe multiplicity; linguistically and conceptually. Importantly, compassion was seen as particularly essential for younger selves within the system; older in their years and presence, but often more vulnerable within the societies in which the system resides.

Group treatment for complex dissociative disorders: a randomized clinical trial

BACKGROUND

Patients with complex dissociative disorders (CDD) report high levels of childhood- abuse experiences, clinical comorbidity, functional impairment, and treatment utilization. Although a few naturalistic studies indicate that these patients can benefit from psychotherapy, no randomized controlled trials have been reported with this patient-group. The current study evaluates a structured protocolled group treatment delivered in a naturalistic clinical setting to patients with CDD, as an add-on to individual treatment.

METHODS

Fifty nine patients with CDD were randomized to 20 sessions of stabilizing group-treatment, conjoint with individual therapy, or individual therapy alone, in a delayed-treatment design. The treatment was based on the manual Coping with Trauma-Related Dissociation. The primary outcome was Global Assessment of Functioning (GAF), while secondary outcomes were PTSD and dissociative symptoms, general psychopathology, and interpersonal difficulties.

RESULTS

Mixed effect models showed no condition x time interaction during the delayed treatment period, indicating no immediate differences between conditions in the primary outcome. Similar results were observed for secondary outcomes. Within-group effects were non-significant in both conditions from baseline to end of treatment, but significant improvements in psychosocial function, PTSD symptoms, and general psychopathology were observed over a 6-months follow-up period.

CONCLUSION

In the first randomized controlled trial for the treatment of complex dissociative disorders, stabilizing group treatment did not produce immediate superior outcomes. Treatment was shown to be associated with improvements in psychological functioning.

TRIAL REGISTRATION

Clinical Trials ( NCT02450617 ).

Dissociative identity state-dependent working memory in dissociative identity disorder: a controlled functional magnetic resonance imaging study

BACKGROUND

Memory function is at the core of the psychopathology of dissociative identity disorder (DID), but little is known about its psychobiological correlates.

AIMS

This study aims to investigate whether memory function in DID differs between dissociative identity states.

METHOD

Behavioural data and neural activation patterns were assessed in 92 sessions during an n-back working memory task. Participants were people with genuine diagnosed DID (n = 14), DID-simulating controls (n = 16) and a paired control group (post-traumatic stress disorder (n = 16), healthy controls (n = 16)). Both DID groups participated as authentic or simulated neutral and trauma-related identity states. Reaction times and errors of omission were analysed with repeated measures ANOVA. Working memory neural activation (main working memory and linear load) was investigated for effects of identity state, participant group and their interaction.

RESULTS

Identity state-dependent behavioural performance and neural activation was found. DID simulators made fewer errors of omission than those with genuine DID. Regarding the prefrontal parietal network, main working memory in the left frontal pole and ventrolateral prefrontal cortex (Brodmann area 44) was activated in all three simulated neutral states, and in trauma-related identity states of DID simulators, but not those with genuine DID or post-traumatic stress disorder; for linear load, trauma-related identity states of those with genuine DID did not engage the parietal regions.

CONCLUSIONS

Behavioural performance and neural activation patterns related to working memory in DID are dependent on the dissociative identities involved. The narrowed consciousness of trauma-related identity states, with a proneness to re-experiencing traumatising events, may relate to poorer working memory functioning.

Functional (psychogenic non-epileptic/dissociative) seizures: why and how?

Functional seizures (FS) known also as psychogenic non-epileptic seizures or dissociative seizures, present with ictal semiological manifestations, along with various comorbid neurological and psychological disorders. Terminology inconsistencies and discrepancies in nomenclatures of FS may reflect limitations in understanding the neuropsychiatric intricacies of this disorder. Psychological and neurobiological processes of FS are incompletely understood. Nevertheless, important advances have been made on underlying neuropsychopathophysiological mechanisms of FS. These advances provide valuable information about the underlying mechanisms of mind-body interactions. From this perspective, this narrative review summarises recent studies about aetiopathogenesis of FS at two levels: possible risk factors (why) and different aetiopathogenic models of FS (how). We divided possible risk factors for FS into three categories, namely neurobiological, psychological and cognitive risk factors. We also presented different models of FS based on psychological and neuroanatomical understanding, multilevel models and integrative understanding of FS. This work should help professionals to better understand current views on the multifactorial mechanisms involved in the development of FS. Shedding light on the different FS profiles in terms of aetiopathogenesis will help guide how best to direct therapy, based on these different underlying mechanisms.

Physical Versus Sexual Abuse as Reflected in Adolescents' Self-Figure Drawings: A Preliminary Study

Based on the lack of validated assessment tools to detect past physical or sexual abuse, the current study examines to what extent the experience of either sexual or physical abuse is reflected in self-figure drawings of adolescents at-risk. A convenience sample consists of 93 adolescents at risk between the ages of 12-17 recruited from Welfare institutes divided into three groups: Group 1 included adolescents who experienced sexual abuse, Group 2 included adolescents who experienced physical abuse but not sexual abuse, Group 3 included adolescents who experienced neither sexual abuse nor physical abuse. A self-report anonymous questionnaire that consisted of demographics, traumatic events questionnaire, and the Medical Somatic Dissociation Questionnaire (MSDQ) was administered following Ethical approval and signing of consent forms. Participants were asked to draw themselves on an A4 sheet of paper using a pencil. Five social workers who were unaware of participants' experiences assessed the drawings independently for the level of obviousness of the following indicators: face line, eyes, nose, ears, hair stand, forehead, lower body, arms, and hands. Results yielded differences in pictorial indicators (nose, hair stand, lower body) among the groups. MSDQ score was found significantly higher among sexually abused victims.

Psychogenic non-epileptic seizures: Chronology of multidisciplinary team approach to diagnosis and management

While the diagnosis and management of psychogenic non-epileptic seizures (PNES) remain challenging, certain evidence-based guidelines exist, which can help to optimize patient care. A multidisciplinary team approach appears to have many benefits. Current recommendations exist for some aspects of diagnosis and management of PNES, including levels of diagnostic certainty as proposed by the International League Against Epilepsy's expert Task Force on PNES. Other aspects of clinical still care lack clear consensus, including use of suggestion techniques for recording PNES and optimal terminology, since the term "functional seizures" has recently been proposed as a possible term to replace "PNES". The present article aims to (1) review current recommendations and (2) discuss our own team's experience in managing patients with PNES. This is organized chronologically in terms of the roles of the neurologist, psychiatrist and psychologist, and discusses diagnostic issues, psychiatric assessment and treatment, and psychotherapeutic approaches.

Psychological Impact of COVID-19 on Parents of Pediatric Cancer Patients

The changes and general alarm of the current COVID-19 pandemic have amplified the sense of precariousness and vulnerability for family members who, in addition to the emotional trauma of the cancer diagnosis, add the distress and fear of the risks associated with infection. The primary objectives of the present study were to investigate the psychological impact of the COVID-19 pandemic on the parents of pediatric cancer patients, and the level of stress, anxiety, and the child's quality of life perceived by the parents during the COVID-19 epidemic. The parents of 45 consecutive children with solid and hematological tumors were enrolled. Four questionnaires (Impact of Event Scale-Revised - IES-R; Perceived Stress Scale - PSS; Spielberger State - Trait Anxiety Inventory - STAI-Y; Pediatric Quality of Life Inventory - PedsQL) were administered to the parents at the beginning of the pandemic lockdown. A 75% of parents exhibited remarkable levels of anxiety, with 60 subjects in state scale and 45 subjects in trait scale having scores that reached and exceeded the STAI-Y cut off. The bivariate matrix of correlation found a significant positive correlation between the IES-R and PSS scores (r = 0.55, P < 0.001). There was a positive correlation between the PSS and PedsQL (emotional needs) scale (P < 0.001) and a negative correlation between IES-R and STAI-Y (P < 0.001). The results confirm that parents of pediatric cancer patients have a high psychological risk for post-traumatic symptoms, high stress levels, and the presence of clinically significant levels of anxiety.

Wearing the wolf skin: psychiatry and the phenomenon of the berserker in medieval Scandinavia

This paper examines the berserker, a frenzied warrior attested to in both the written and material sources of medieval Scandinavia, and elucidates the characteristics that define him. It critiques explanations for the phenomenon offered in the existing historiography and whether this can be explained as a psychiatric diagnosis. It concludes that the berserker cannot be simply defined as a culturally bound or other psychiatric syndrome, or accounted for by psychogenic drugs alone. Instead, it proposes that berserk frenzy constituted a transitory dissociative state shared among a small warband steeped in religious/spiritual ideology. In entering this state, the psyche of the berserker was reconstituted in an almost archetypal pattern. Further research is required into this phenomenon in other contexts, including modern conflicts.

The numinous experience in the context of psychopathology and traumatic stress studies

The psychological phenomenon of a suddenly appearing, extremely enigmatic, and at the same time fascinating state in which one feels influenced by higher powers was described as a “numinous experience” by R. Otto and C. G. Jung. This condition is one of those subjectively non-rational experiences that have so far received little attention in cultural clinical psychology and yet have great potency to explain psychopathological phenomena. In the first section of this paper, we work towards a contemporary psychological definition both by focusing on the roles of paradoxical cognitions and dissociation and by presenting various differentiations and possible explanatory mechanisms. In the second part of this paper, we describe the numinous state as it occurs in selected clinical phenomena such as the subjective experience of potentially traumatic events including near-death experiences, sexual abuse of children, post-traumatic stress disorder, severe states of mourning (diagnosed today as prolonged grief disorder), and sleep paralysis. This paper is intended as a theoretical proposal aimed at better understanding subjectively non-rational states in patients.

Confounding, Mediation, or Independent Effect? Childhood Psychological Abuse, Mental Health, Mood/Psychological State, COPD, and Migraine

In some settings, it may be difficult to differentiate between a confounder and a mediator. For instance, the observed association of self-reported childhood psychological abuse (CPA) with onset of chronic obstructive pulmonary disease (COPD) and migraine may be confounded by current mood/psychological state (e.g., the subjective evaluation of one's own affective state), as well as mediated by an individual's psychopathological symptoms. In this study, we propose the "independence hypothesis," which could prove meaningful to explore in data that lack prospective or objective indices of CPA. We used cross-sectional data from wave VI (2007-2008) of the Tromsø Study, Norway (N = 12,981). The associations between CPA and COPD and migraine were assessed with Poisson regression models. CPA was associated with a 46% increased risk of COPD (relative risk [RR] = 1.46, 95% confidence interval [CI]: [1.02, 1.90]) and a 28% increased risk of migraine in adulthood (RR = 1.28, 95% CI: [1.04, 1.53]), independent of age, sex, parental history of psychiatric problems/asthma/dementia, smoking, respondent's mood/psychological state, and mental health. These findings suggest that the association between retrospectively reported CPA and COPD and migraine is not driven entirely by respondent's mood/psychological state and mental health. Assessing the independent effect of self-reported CPA on COPD and migraine in retrospective studies may prove more meaningful than exploring the mediating role of mental health. Here, we provide the analytical rationale for assessing the independent effect in settings where it is difficult to differentiate between a confounder and a mediator. Moreover, we provide a theoretical rationale for assessing the independent effect of retrospectively reported childhood adversity on health and well-being.

Dissociative Experiences Mediate the Relationship Between Traumatic Life Events and Types of Skin Picking. Findings From Non-clinical Sample

Aim: Skin-picking (excoriation) disorder is considered as a form of maladaptive coping methods used by individuals who have difficulties in applying more adaptive strategies. Skin-picking development has been suggested to be preceded by traumatic life events. Dissociative symptoms have been reported as experienced by skin-picking sufferers during picking episodes. The purpose of the study was to examine whether the link between trauma and automatic type of skin-picking is mediated by the frequency of dissociative experiences, and whether the COVID-19 pandemic conditions have changed this relationship in any way. Methods: The study sample consisted of 594 adults (76% women) aged from 18 to 60. Traumatic life events, dissociative experiences, and types of skin-picking (focused vs. automatic) were assessed with self-report questionnaires. Mediation analyses and multigroup path analyses were carried out. Results: Dissociative experiences partially mediated the link between traumatic events and both types of skin-picking. The model was robust considering the conditions in which survey was filled out (pre-pandemic vs. pandemic). Conclusions: Traumatic life events and dissociative experiences are associated with both automatic and focused skin-picking regardless of pandemic conditions. Further studies are needed to understand mechanisms underlying the relationship between dissociation and skin-picking styles.

Pathologische Dissoziation bei Patienten mit einer Borderline-Persönlichkeitsstörung

Trotz der hohen Relevanz dissoziativer Phänomene bei der Borderline-Persönlichkeitsstörung (BPS) ist das Konzept der pathologischen Dissoziation bisher kaum in diesem Kontext untersucht worden. Zur Operationalisierung von pathologischer Dissoziation wurden diverse Indizes vorgeschlagen, deren klinische Nützlichkeit in der vorliegenden Studie ebenso untersucht wurde wie ihre Häufigkeit, klinischen Korrelate und prädiktive Bedeutung. Hierzu bearbeiteten 487 stationäre BPS-Patienten bei Aufnahme Selbstbeurteilungsverfahren zu Dissoziation (Dissociative Experiences Scale, DES-28) sowie allgemeiner und Borderline-typischer Pathologie (Gesundheitsfragebogen für Patienten [PHQ-D], Borderline Symptom Liste [BSL-95]). Diejenigen Patienten, die mindestens 6 Wochen an der stationären Dialektisch-Behavioralen Therapie (DBT) teilgenommen hatten, füllten am Ende erneut den PHQ‑D und die BSL-95 aus (n zwischen 342 und 361). Je nach Operationalisierung der Dissoziation litten zwischen knapp 20 % und 37 % der BPS-Patienten unter pathologischer Dissoziation. Diese war eng mit allgemeiner und Borderline-typischer Symptomatik bei Aufnahme assoziiert. Ein hohes Ausmaß an pathologischer Dissoziation zu Behandlungsbeginn prädizierte ein schlechteres symptombezogenes Therapieergebnis. Konsistent mit einer Vielzahl anderer Studien unterstreichen diese Befunde die Relevanz von Dissoziation bei der BPS. Die aus nur 8 Items der DES-28 bestehende DES-Taxon (DES-T) kann pathologische Dissoziation anwendungs- und auswertungsfreundlich erheben, erweist sich als mindestens ebenso relevant wie die DES-28 und hat für das symptombezogene Behandlungsergebnis sogar eine höhere prädiktive Relevanz. Daher empfiehlt sich ein Screening aller BPS-Patienten auf pathologische Dissoziation mit der DES‑T.

The path to dissociative experiences: A direct comparison of different etiological models

Severe dissociation is trauma-related, but a range of dissociative experiences are also prevalent in clinical populations that are not necessarily trauma-based (e.g., depression, anxiety disorders, and obsessive-compulsive disorders). These remain poorly understood as the dominant etiological model for dissociation relies on trauma. Importantly, dissociation in such samples predicts poor prognosis and high drop-out rates. We set out to better understand the aetiology of dissociative experiences in a mixed clinical (anxiety and depression) and community sample by exploring between- and within-subjects effects of two domains: psychological distress or negative affectivity (operationalized as anxiety and depression symptoms), and poor sleep quality, including disturbed dreaming. The idea that negative affectivity triggers dissociation (Distress Model) is inspired by the trauma model. The idea that poor sleep and unusual dreaming underlie dissociation (Sleep Model) has been suggested as a competing theory. We examined both models by exploring which domains oscillate alongside dissociative experiences. N = 98 adults, half of them diagnosed with depression and anxiety and half community controls, underwent a structured clinical interview and completed questionnaires monthly for 6 months. Support was found for both models in that each domain had a unique explanatory contribution. Distress evinced consistent effects that could not be explained by sleep or dreaming, both between individuals and across time. Oscillations in dissociation across months, when taking psychological distress into account, were better explained by unusual dreaming than traditional sleep quality measures. These findings cannot be generalized to highly-traumatized samples. A complex, integrated etiological model for dissociative experiences is warranted.

Collective trauma: An evolutionary concept analysis

The purpose of this article is to explore the meaning, and derive an operational definition, of the concept of collective trauma. A search of the databases CINAHL, Ovid MEDLINE, and PsychInfo revealed no concept analysis about collective trauma. Using Rodger's approach, this evolutionary concept analysis clarifies the concept's surrogate and related terms, attributes, antecedents, and consequences, and proposes a derived definition. A clearer conceptualization of collective trauma is crucial for nurses and other health care professionals in their practice, theory and research.

Childhhood Trauma in Schizophrenia Spectrum Disorders: Dissociative, Psychotic Symptoms, and Suicide Behavior

Current evidence suggests a high prevalence of childhood trauma (CT) among adult patients diagnosed with schizophrenia spectrum disorders. Exposure to CT might lead to clinical differences eventually observed in these patients. We present a cross-sectional study with 54 patients with schizophrenia spectrum disorder (schizophrenia and schizoaffective disorder). We obtained sociodemographic data, as well as data on CT, dissociation, suicide history, and intensity of positive and negative psychotic symptoms. More than 75% of the patients reported a history of CT. We observed a link between CT and suicidal behavior. Patients showed high rates of dissociation. Dissociative experiences were related to CT, both in terms of intensity of trauma and number of traumas experienced. All CT forms except emotional neglect showed direct correlations with dissociative experiences. We found no correlation between intensity of CT and intensity of positive psychotic symptoms, yet we observed a moderate inverse correlation with negative psychotic symptoms.

Psychogenic Non-epileptic Seizures and Pseudo-Refractory Epilepsy, a Management Challenge

Psychogenic nonepileptic seizures (PNES) are neurobehavioral conditions positioned in a gray zone, not infrequently a no-man land, that lies in the intersection between Neurology and Psychiatry. According to the DSM 5, PNES are a subgroup of conversion disorders (CD), while the ICD 10 classifies PNES as dissociative disorders. The incidence of PNES is estimated to be in the range of 1.4-4.9/100,000/year, and the prevalence range is between 2 and 33 per 100,000. The International League Against Epilepsy (ILAE) has identified PNES as one of the 10 most critical neuropsychiatric conditions associated with epilepsy. Comorbidity between epilepsy and PNES, a condition leading to "dual diagnosis," is a serious diagnostic and therapeutic challenge for clinicians. The lack of prompt identification of PNES in epileptic patients can lead to potentially harmful increases in the dosage of anti-seizure drugs (ASD) as well as erroneous diagnoses of refractory epilepsy. Hence, pseudo-refractory epilepsy is the other critical side of the PNES coin as one out of four to five patients admitted to video-EEG monitoring units with a diagnosis of pharmaco-resistant epilepsy is later found to suffer from non-epileptic events. The majority of these events are of psychogenic origin. Thus, the diagnostic differentiation between pseudo and true refractory epilepsy is essential to prevent actions that lead to unnecessary treatments and ASD-related side effects as well as produce a negative impact on the patient's quality of life. In this article, we review and discuss recent evidence related to the neurobiology of PNES. We also provide an overview of the classifications and diagnostic steps that are employed in PNES management and dwell on the concept of pseudo-resistant epilepsy.

Validity and reliability of a Persian version of the Dissociative Experiences Scale II (DES-II) on Iranian patients diagnosed with schizophrenia and mood disorders

Dissociative Experiences Scale (DES) is a valid self-reported tool to evaluate both non-pathological and pathological dissociative experiences. This study aims at evaluating the psychometric properties of a Persian version of the DES-II on both non-clinical samples and patients with schizophrenia and mood disorders. The back-translated DES-II was administered to 370 individuals being divided into three groups (270 healthy subjects, 50 patients with mood disorders, and 50 patients with schizophrenia) recruited from Shahid Beheshti Hospital of Kerman Medical University. The results showed a good reliability (Cronbach's alpha = 0.95), a very high item-total correlation, and a good internal consistency of 0.892 measured by split half. Moreover, the Persian version of the DES-II questionnaire demonstrated convergent validity of the scale. Analyses of the DES-II subscales revealed significant differences for amnesic experiences, absorption/imaginative involvement, and depersonalization/derealization among healthy individuals, and patients with mood disorders as well as schizophrenia. We also found significant differences among only schizophrenia group but not mood disorders group in comparison with healthy individuals (p value = .0001, and 0.70, respectively), and between patients with schizophrenia and patients with mood disorders (p value = .03) using DES-T. As a conclusion, the Persian version of the DES-II is an appropriate, reliable, and valid tool to screen dissociative experiences and discriminate subcomponents of dissociative disorders in the Iranian population.

Resolution of Dissociated Ego States Relieves Flashback-Related Symptoms in Combat-Related PTSD: A Brief Mindfulness Based Intervention

A novel understanding and therapeutic approach to the treatment of PTSD-related flashback triggers are described. Triggered responses are conceptualized as the result of latent dissociative structures of neural organization and psychodynamic functioning activated by current events. The dissociative structure - here described as a dissociated ego state (DES) - reflects a fracturing of executive functioning resulting in a delimited aspect of self that is not under cognitive control or subject to cognitive inhibition by the self of daily experience, and is the psychological construct behind intrusive PTSD symptoms. Use of a mindful attentional state permits regulated access to the DES (therapeutic engagement without risk of emotional dysregulation) so that dissociated cognitive resources can be recovered and the dissociated structure deactivated. This may relieve maladaptive responses and behaviors associated with the DES in a profound and durable way, without the need for exposure to or recovery of traumatic memories. Based on this understanding, a 9-step intervention is introduced with a case example of a Vietnam veteran suffering PTSD symptoms for 49 years with significant gains maintained at 21 months follow up. These findings demonstrate rapid and durable resolution of chronic PTSD symptoms through a mindfulness-based approach that focused on deactivation of dissociated ego states, in contrast to targeting trauma memories. If proven efficacious, this novel approach may result in reduced treatment costs and improved outcomes for veterans suffering with PTSD.

Refining Trauma-Informed Perinatal Care for Urban Prenatal Care Patients with Multiple Lifetime Traumatic Exposures: A Qualitative Study

INTRODUCTION

Because lifetime trauma exposure has been linked to multiple adverse pregnancy outcomes, there is a need for all perinatal care providers to be versed in trauma-informed care practices. However, there are few data to guide trauma-informed practice during the perinatal period. The objective of this study was to refine ongoing development of a trauma-informed care framework for perinatal care by conducting a qualitative study of all trauma experiences and preferred screening practices of pregnant patients at an urban prenatal clinic.

METHODS

In this qualitative study, we conducted semistructured interviews with 30 women receiving prenatal care at an urban clinic. Participants also completed a trauma history questionnaire. Inductive coding was used to generate themes and subthemes.

RESULTS

Participants described multiple lifetime traumatic exposures as well as background exposure to community violence. Not all participants desired routine trauma screening; factors limiting disclosure included fear of retraumatization and belief that prior trauma is unrelated to the current pregnancy. Strong therapeutic relationships were identified as critical to any trauma history discussion.

DISCUSSION

This study supports a trauma-informed care approach to caring for pregnant women with prior traumatic exposures, including trauma screening without retraumatization and trusting patient-provider relationships.

Seeing or hearing one's memories: Manipulating autobiographical memory imagery in schizophrenia

The prevalence of auditory hallucinations in schizophrenia, and theories suggesting a link between autobiographical memory and hallucination, raise the possibility of a dominant role of auditory imagery in autobiographical remembering in patients with schizophrenia, whereas visual imagery is dominant in autobiographical memory of healthy adults. The present study explored this possibility by comparing autobiographical memory characteristics, according to sensory modality, in patients with schizophrenia versus healthy controls. Twenty-eight patients and 28 matched controls were asked to retrieve autobiographical memories that were dominated by auditory, visual, gustatory-olfactory, or tactile imagery. ANOVA analysis showed that patients rated their memories lower on specificity, contextual information, feeling of reliving, overall vividness, coherence and autobiographical me-ness (i.e. whether an autobiographical memory is experienced as belonging to the self), ps < 0.03, compared with control participants. The effects of sensory modality imagery were largely similar for patients and controls, as no interaction effects were observed. The findings did not support a dominance of auditory imagery in patients' autobiographical memory. In the patient group, reduced autobiographical me-ness was predicted by lower ratings of contextual information related to the setting of the event. Future research should examine whether these effects extend to involuntary autobiographical memory in schizophrenia.

Predictors of Dissociative Experiences Among Adolescents in Nepal: A Path Analysis

In recent years, many adolescents in Nepal have been affected by episodes of mass psychogenic illness, which seem to involve dissociative symptoms. To identify the potential contributors to dissociation, the present study examined correlates of dissociative experiences among adolescents in Nepal. In a cross-sectional survey, 314 adolescents were assessed with the Adolescent Dissociative Experiences Scale and measures of childhood trauma exposure, as well as cognitive and personality traits found to be associated with dissociation in studies on other populations. Path analysis confirmed that childhood trauma, cognitive and personality traits, and current distress each predicted dissociative experiences and behaviors. However, an integrated path model found that the effect of childhood trauma on dissociation was mediated either by posttraumatic stress symptoms or by cognitive failures. Future studies should develop and test multifactorial models of dissociation and multiple pathways.

Levels of childhood traumatic experiences and dissociative symptoms in extremely obese patients with and without binge eating disorder

Background: It has been suggested that obese patients with binge eating disorder (BED) show higher levels of dissociation and childhood trauma. Aim: This study assesses childhood trauma history and dissociative symptoms in obese patients with BED compared to obese patients without BED. Methods: The 241 patients participating in the study had to meet obesity criteria. These patients were applicants for bariatric surgery and were consulted by a psychiatry service. Patients were separated into two groups that were accompanied by BED diagnoses according to structured clinical interviews administered according to the DSM-IV (SCID-I). Patients were assessed using the Dissociation Questionnaire (DIS-Q) and the Childhood Trauma Questionnaire (CTQ). The two groups of patients were compared. Results: A total of 75 (31.1%) of the 241 obese patients were diagnosed with BED. The study showed that obese patients with BED had higher dissociative scores than those without BED (p < .05). The results showed higher total scores and two different types of childhood trauma (physical abuse and emotional abuse) in BED patients compared to non-BED patients (p < .05). Conclusions: Clinicians should be fully aware of BED, dissociative symptoms and childhood traumatic experiences. These results show that, for at least a sub-group of obese patients, BED is associated with obesity and may be connected with dissociative symptoms and childhood physical abuse and emotional abuse.