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Seizure Jul 2024Psychological interventions are the most recommended treatment for functional/dissociative seizures (FDS); however, there is ongoing uncertainty about their... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Psychological interventions are the most recommended treatment for functional/dissociative seizures (FDS); however, there is ongoing uncertainty about their effectiveness on seizure outcomes.
METHODS
This systematic review and meta-analysis synthesises the available data. In February 2023, we completed a systematic search of four electronic databases. We described the range of seizure-related outcomes captured, used meta-analytic methods to analyse data collected during treatment and follow-up; and explored sources of heterogeneity between outcomes.
RESULTS
Overall, 44 relevant studies were identified involving 1,300 patients. Most were categorised as being at high (39.5 %) or medium (41.9 %) risk of bias. Seizure frequency was examined in all but one study; seizure intensity, severity or bothersomeness in ten; and seizure duration and cluster in one study each. Meta-analyses could be performed on seizure freedom and seizure reduction. A pooled estimate for seizure freedom at the end of treatment was 40 %, while for follow-up it was 36 %. Pooled rates for ≥50 % improvement in seizure frequency were 66 % and 75 %. None of the included moderator variables for seizure freedom were significant. At the group level, seizure frequency improved during the treatment phase with a moderate pooled effect size (d = 0.53). FDS frequency reduced by a median of 6.5 seizures per month. There was also evidence of improvement of the other (non-frequency) seizure-related measures with psychological therapy, but data were insufficient for meta-analysis.
CONCLUSIONS
The findings of this study complement a previous meta-analysis describing psychological treatment-associated improvements in non-seizure-related outcomes. Further research on the most appropriate FDS-severity measure is needed.
Topics: Adult; Humans; Dissociative Disorders; Psychotherapy; Seizures; Treatment Outcome
PubMed: 38824867
DOI: 10.1016/j.seizure.2024.05.016 -
European Journal of Psychotraumatology 2024Preliminary evidence provides support for the proposition that there is a dissociative subtype of Complex posttraumatic stress disorder (CPTSD). Research on this...
Preliminary evidence provides support for the proposition that there is a dissociative subtype of Complex posttraumatic stress disorder (CPTSD). Research on this proposition would extend our knowledge on the association between CPTSD and dissociation, guide contemporary thinking regarding placement of dissociation in the nosology of CPTSD, and inform clinically useful assessment and intervention. The present study aimed to investigate the co-occurring patterns of CPTSD and dissociative symptoms in a large sample of trauma exposed adolescents from China, and specify clinical features covariates of such patterns including childhood trauma, comorbidities with major depressive disorder (MDD) and generalized anxiety disorder (GAD), and functional impairment. Participants included 57,984 high school students exposed to the coronavirus disease 2019 (COVID-19) pandemic. CPTSD and dissociative symptoms, childhood traumatic experience, and functional impairment were measured with the Global Psychotrauma Screen for Teenagers (GPS-T). Major depressive disorder (MDD) and generalized anxiety disorder (GAD) symptoms were measured with the Patient Health Questionnaire-9 (PHQ-9) and the Generalized Anxiety Disorder-7 (GAD-7), respectively. Latent class analysis (LCA) was employed to test the co-occurring patterns of CPTSD and dissociative symptoms. Analysis of covariance (ANCOVA) and chi-square tests were respectively used to examine between-class differences in continuous and categorical clinical covariates. A 5-class model emerged as the best-fitting model, including resilience, predominantly PTSD symptoms, predominantly disturbances in self-organization (DSO)symptoms, predominantly CPTSD symptoms, and CPTSD dissociative subtype classes. The CPTSD dissociative subtype class showed the lowest level of functioning and the highest rates of MDD, GAD and childhood trauma. Our findings provide initial empirical evidence supporting the existence of a dissociative subtype of CPTSD, and inform for further research and clinical practice on traumatized individuals.
Topics: Humans; Stress Disorders, Post-Traumatic; Adolescent; China; Male; Female; Dissociative Disorders; COVID-19; Depressive Disorder, Major; Latent Class Analysis; Anxiety Disorders; SARS-CoV-2; Comorbidity; East Asian People
PubMed: 38809665
DOI: 10.1080/20008066.2024.2351292 -
Journal of Neurosciences in Rural... 2024Memory deficits are observed across psychiatric disorders ranging from the prodrome of psychosis to common mental disorders such as anxiety, depression, and dissociative... (Review)
Review
Memory deficits are observed across psychiatric disorders ranging from the prodrome of psychosis to common mental disorders such as anxiety, depression, and dissociative disorders. Memory deficits among patients recovering from psychiatric disorders could be directly related to the primary illness or secondary to the adverse effect of a treatment such as Electroconvulsive Therapy (ECT). The trouble in the meaningful integration of working-memory and episodic memory is the most commonly affected domain that requires routine assessments. An update on the recent trends of methods of assessment of memory deficits is the first step towards understanding and correcting these deficits to target optimum recovery. A systematic literature search was conducted from October 2018 to October 2022 to review the recent methods of assessment of memory deficits in psychiatric disorders. The definition of 'Memory deficit' was operationalized as 'selective processes of memory, commonly required for activities of daily living, and affected among psychiatric disorders resulting in subjective distress and dysfunction'. We included 110 studies, most of them being conducted in western countries on patients with schizophrenia. Other disorders included dementia and mild cognitive impairment. Brief Assessment of Cognition in Schizophrenia, Cambridge Automated Neuropsychological Test Battery, California Verbal Learning Test, Trail Making Test Part A and B, Rey Auditory Verbal Learning Test, Wechsler Memory Scale, Wechsler Adults Intelligence Scale-IV were the most common neuropsychological assessments used. Mini-Mental State Examination and Montreal Cognitive Assessment were the most common bedside assessment tools used while Squire Subjective Memory Questionnaire was commonly used to measure ECT-related memory deficits. The review highlights the recent developments in the field of assessment of memory deficits in psychiatric disorders. Findings recommend and emphasize routine assessment of memory deficits among psychiatric disorders in developing countries especially severe mental illnesses. It remains interesting to see the role of standardized assessments in diagnostic systems given more than a decade of research on memory deficits in psychiatric disorders.
PubMed: 38746499
DOI: 10.25259/JNRP_456_2023 -
European Journal of Psychotraumatology 2024While several studies documented a positive correlation between childhood maltreatment severity and dissociation severity, it is currently unknown whether specific...
While several studies documented a positive correlation between childhood maltreatment severity and dissociation severity, it is currently unknown whether specific dissociative symptoms cluster together among individuals with childhood trauma histories ranging from none to severe. We aimed to explore symptom constellations across the whole spectrum of dissociative processing from patients with severe dissociative disorders to healthy controls and relate these to maltreatment severity and sociodemographic characteristics. We employed latent profile analysis to explore symptom profiles based on five subscales, measuring absorption, depersonalization, derealization, somatoform and identity alteration, based on the 20 items of the German short version of the Dissociative Experiences Scale-II (20) in a large aggregate sample ( = 3,128) overrepresenting patients with trauma-related disorders. We then related these profiles to maltreatment severity as measured by the five subscales of the Childhood Trauma Questionnaire as well as sociodemographic characteristics. Based on the five FDS subscales, six clusters differentiated by symptom severity, but not symptom constellations, were identified. Somatoform dissociation varied in accordance with the remaining symptom clusters. The cluster with the highest overall symptom severity entailed nearly all subjects diagnosed with Dissociative Identity Disorder and was characterized by extreme levels of childhood maltreatment. Both abuse and neglect were predictive of cluster membership throughout. The higher the severity of dissociative processing in a cluster, the more subjects reported high severity and multiplicity of childhood maltreatment. However, some subjects remain resilient to the development of dissociative processing although they experience extreme childhood maltreatment.
Topics: Humans; Dissociative Disorders; Female; Male; Adult; Surveys and Questionnaires; Adult Survivors of Child Abuse; Middle Aged; Adverse Childhood Experiences; Child Abuse; Germany; Psychiatric Status Rating Scales; Child
PubMed: 38739008
DOI: 10.1080/20008066.2024.2348345 -
Journal of Psychosomatic Research Aug 2024Recent neuroscientific models suggest that functional bodily symptoms can be attributed to perceptual dysregulation in the central nervous system. Evidence for this...
Experimental evidence for a robust, transdiagnostic marker in functional disorders: Erroneous sensorimotor processing in functional dizziness and functional movement disorder.
OBJECTIVE
Recent neuroscientific models suggest that functional bodily symptoms can be attributed to perceptual dysregulation in the central nervous system. Evidence for this hypothesis comes from patients with functional dizziness, who exhibit marked sensorimotor processing deficits during eye-head movement planning and execution. Similar findings in eye-head movement planning in patients with irritable bowel syndrome confirmed that these sensorimotor processing deficits represent a shared, transdiagnostic mechanism. We now examine whether erroneous sensorimotor processing is also at play in functional movement disorder.
METHODS
We measured head movements of 10 patients with functional movement disorder (F44.4, ICD-10), 10 patients with functional dizziness (F45.8, ICD-10), and (respectively) 10 healthy controls during an eye-head experiment, where participants performed large gaze shifts under normal, increased, and again normal head moment of inertia. Head oscillations at the end of the gaze shift served as a well-established marker for sensorimotor processing problems. We calculated Bayesian statistics for comparison.
RESULTS
Patients with functional movement disorder (Bayes Factor (BF) = 5.36, BF = 11.16; substantial to strong evidence) as well as patients with functional dizziness (BF = 2.27, BF = 3.56; anecdotal to substantial evidence) showed increased head oscillations compared to healthy controls, indicating marked deficits in planning and executing movement.
CONCLUSION
We replicate earlier experimental findings on erroneous sensorimotor processing in patients with functional dizziness, and show that patients with functional movement disorder show a similar impairment of sensorimotor processing during large gaze shifts. This provides an objectively measurable, transdiagnostic marker for functional disorders, highlighting important implications for diagnosis, treatment, and de-stigmatization.
Topics: Humans; Dizziness; Female; Male; Adult; Middle Aged; Movement Disorders; Head Movements; Eye Movements; Bayes Theorem
PubMed: 38734533
DOI: 10.1016/j.jpsychores.2024.111694 -
BMJ Open May 2024Although short-term benefits follow parenteral ketamine for treatment-resistant major depressive disorder (TR-MDD), there are challenges that prevent routine use of... (Randomized Controlled Trial)
Randomized Controlled Trial
INTRODUCTION
Although short-term benefits follow parenteral ketamine for treatment-resistant major depressive disorder (TR-MDD), there are challenges that prevent routine use of ketamine by clinicians. These include acute dissociative effects of parenteral ketamine, high relapse rates following ketamine dosing and the uncertain role of psychotherapy. This randomised controlled trial (RCT) seeks to establish the feasibility of evaluating repeated oral doses of ketamine and behavioural activation therapy (BAT), compared with ketamine treatment alone, for TR-MDD. We also aim to compare relapse rates between treatment arms to determine the effect size of adding BAT to oral ketamine.
METHODS AND ANALYSIS
This is a prospectively registered, two-centre, single-blind RCT. We aim to recruit 60 participants with TR-MDD aged between 18 and 65 years. Participants will be randomised to 8 weeks of oral ketamine and BAT, or 8 weeks of oral ketamine alone. Feasibility will be assessed by tracking attendance for ketamine and BAT, acceptability of treatment measures and retention to the study follow-up protocol. The primary efficacy outcome measure is the Montgomery-Asberg Depression Rating Scale (MADRS) measured weekly during treatment and fortnightly during 12 weeks of follow-up. Other outcome measures will assess the tolerability of ketamine and BAT, cognition and activity (using actigraphy). Participants will be categorised as non-responders, responders, remitters and relapsed during follow-up. MADRS scores will be analysed using a linear mixed model. For a definitive follow-up RCT study to be recommended, the recruitment expectations will be met and efficacy outcomes consistent with a >20% reduction in relapse rates favouring the BAT and ketamine arm will be achieved.
ETHICS AND DISSEMINATION
Ethics approval was granted by the New Zealand Central Health and Disability Ethics Committee (reference: 2023 FULL18176). Study findings will be reported to participants, stakeholder groups, conferences and peer-reviewed publications.
TRIAL REGISTRATION NUMBER
UTN: U1111-1294-9310, ACTRN12623000817640p.
Topics: Humans; Ketamine; Depressive Disorder, Treatment-Resistant; Adult; Single-Blind Method; Middle Aged; Depressive Disorder, Major; Male; Female; Randomized Controlled Trials as Topic; Behavior Therapy; Young Adult; Adolescent; Treatment Outcome; Prospective Studies; Aged
PubMed: 38692731
DOI: 10.1136/bmjopen-2024-084844 -
Frontiers in Pharmacology 2024(, )- and ()-ketamine have made significant progress in the treatment of treatment-resistant depression (TRD) and have become a research focus in recent years. However,... (Review)
Review
(, )- and ()-ketamine have made significant progress in the treatment of treatment-resistant depression (TRD) and have become a research focus in recent years. However, they both have risks of psychomimetic effects, dissociative effects, and abuse liability, which limit their clinical use. Recent preclinical and clinical studies have shown that ()-ketamine has a more efficient and lasting antidepressant effect with fewer side effects compared to (, )- and ()-ketamine. However, a recent small-sample randomized controlled trial found that although ()-ketamine has a lower incidence of adverse reactions in adult TRD treatment, its antidepressant efficacy is not superior to the placebo group, indicating its antidepressant advantage still needs further verification and clarification. Moreover, an increasing body of research suggests that ()-ketamine might also have significant applications in the prevention and treatment of medical fields or diseases such as cognitive disorders, perioperative anesthesia, ischemic stroke, Parkinson's disease, multiple sclerosis, osteoporosis, substance use disorders, inflammatory diseases, COVID-19, and organophosphate poisoning. This article briefly reviews the mechanism of action and research on antidepressants related to ()-ketamine, fully revealing its application potential and development prospects, and providing some references and assistance for subsequent expanded research.
PubMed: 38666026
DOI: 10.3389/fphar.2024.1337749 -
Journal of Psychiatric Research Jun 2024Dissociative identity disorder (DID) is characterised by, among others, subjectively reported inter-identity amnesia, reflecting compromised information transfer between...
INTRODUCTION
Dissociative identity disorder (DID) is characterised by, among others, subjectively reported inter-identity amnesia, reflecting compromised information transfer between dissociative identity states. Studies have found conflicting results regarding memory transfer between dissociative identity states. Here, we investigated inter-identity amnesia in individuals with DID using self-relevant, subject specific stimuli, and behavioural and neural measures.
METHODS
Data of 46 matched participants were included; 14 individuals with DID in a trauma-avoidant state, 16 trauma-avoiding DID simulators, and 16 healthy controls. Reaction times and neural activation patterns related to three types of subject specific words were acquired and statistically analysed, namely non-self-relevant trauma-related words (NSt), self-relevant trauma-related words from a trauma-avoidant identity state (St), and trauma-related words from a trauma-related identity state (XSt).
RESULTS
We found no differences in reaction times between XSt and St words and faster reaction times for XSt over NSt. Reaction times of the diagnosed DID group were the longest. Increased brain activation to XSt words was found in the frontal and parietal regions, while decreased brain activity was found in the anterior cingulate cortex in the diagnosed DID group.
DISCUSSION
The current study reproduces and amalgamates previous behavioural reports as well as brain activation patterns. Our finding of increased cognitive control over self-relevant trauma-related knowledge processing has important clinical implications and calls for the redefinition of "inter-identity amnesia" to "inter-identity avoidance".
Topics: Humans; Male; Female; Adult; Amnesia; Dissociative Identity Disorder; Young Adult; Magnetic Resonance Imaging; Reaction Time
PubMed: 38653030
DOI: 10.1016/j.jpsychires.2024.04.026 -
Frontiers in Psychology 2024An integrative approach is presented to understand the transmission mechanisms of attachment trauma and the quality of the internal working model through manifestations...
An integrative approach is presented to understand the transmission mechanisms of attachment trauma and the quality of the internal working model through manifestations of bodily symptoms concerning physical and mental health. A case of dissociative symptomatology is described in a woman whose ancestors experienced individual and collective trauma related to the political regime. The approach allows for an analytical view beyond the standard complaints of anxiety, depression, post-traumatic symptoms, eating disorders, etc. A brief description of the transgenerational transmission of trauma is presented.
PubMed: 38650899
DOI: 10.3389/fpsyg.2024.1362561 -
International Journal of General... 2024In clinical work, it has been found that the prevalence of hyperuricemia (HUA) is significantly higher in younger patients with psychiatric disorders, but there are few...
PURPOSE
In clinical work, it has been found that the prevalence of hyperuricemia (HUA) is significantly higher in younger patients with psychiatric disorders, but there are few studies in this area. The present study aims to evaluate the prevalence of HUA and the relationship between the HUA and age in hospitalized patients with psychiatric disorders in the real world, and to provide a theoretical basis for clinical staff to pay attention to the metabolic indicators of younger patients and for future related studies.
METHODS
This is a cross-sectional evaluation of a cohort of 1761 patients with psychiatric disorders of hospitalized. The categories of disorders designed for study included: Depression, Bipolar disorder, Schizophrenia, Anxiety, Obsessive-Compulsive disorder, Acute and transient psychotic disorder, Dissociative(conversion) disorders, Conduct disorders and Tic disorders. In addition, based on age, the participants are stratified into three groups. The authors used Kruskal-Wallis tests, chi-square tests, and multiple linear logistic regression to verify the relationship between HUA and age among hospitalized patients with psychiatric disorders.
RESULTS
Overall, the estimated prevalence of HUA was 35.4%. The prevalence of HUA was significantly higher in individuals with 17 years and under compared to those with 45 years and above (P < 0.001). After adjusting for confounders, the prevalence of HUA remained higher at 17 years and under than at 45 years and above. Bipolar disorder can lead to an increased prevalence of HUA (P<0.05).
CONCLUSION
The prevalence of HUA was higher in hospitalized patients with psychiatric disorders, and the prevalence was inversely proportional to age.
PubMed: 38645402
DOI: 10.2147/IJGM.S454670