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Psychiatry Research Jun 2020Suicide attempts are a significant global public health concern. Research into non-traditional factors, such as the presence of alexithymia, may shed light on the... (Review)
Review
INTRODUCTION
Suicide attempts are a significant global public health concern. Research into non-traditional factors, such as the presence of alexithymia, may shed light on the prediction of suicidal behaviours, which can aid intervention and prevention strategies. To ascertain whether alexithymia is a unique risk factor for suicide attempts, this article reviews the evidence on alexithymia related to suicidal ideation, attempts, and non-suicidal self-injury (NSSI).
METHODS
A literature search was conducted for original articles examining the general and psychiatric populations.
RESULTS
There is consistent evidence linking alexithymia with suicidal ideation and NSSI, but inconsistent evidence linking it to suicide attempts.
CONCLUSION
The relationship between alexithymia and suicidality seems to differ based on whether the research focuses on suicidal ideation, suicide attempts, or NSSI. The relationship between alexithymia and suicidality can be understood within the context of multiple code theory and childhood trauma. Future research should explore the whether alexithymia can reliably distinguish between those with a single attempt and those with multiple suicide attempts as well as alexithymia levels pre- and post-intervention with suicide-related behavior as outcomes in treatment studies.
Topics: Adolescent; Affective Symptoms; Child; Female; Humans; Male; Risk Factors; Self-Injurious Behavior; Suicidal Ideation; Suicide, Attempted
PubMed: 32279008
DOI: 10.1016/j.psychres.2020.112920 -
European Psychiatry : the Journal of... Jan 2019New research suggests that, rather than representing a core feature of autism spectrum disorder (ASD), emotional processing difficulties reflect co-occurring... (Meta-Analysis)
Meta-Analysis
BACKGROUND
New research suggests that, rather than representing a core feature of autism spectrum disorder (ASD), emotional processing difficulties reflect co-occurring alexithymia. Autistic individuals with alexithymia could therefore represent a specific subgroup of autism who may benefit from tailored interventions. The aim of this systematic review and meta-analysis was to explore the nature and prevalence of alexithymia in autism using the Toronto Alexithymia Scale (TAS).
METHODS
Online scientific databases were searched systematically for studies on ASD popu lations using the TAS. Meta-analyses were performed to evaluate differences in scores between the ASD and neurotypical groups, and to determine the prevalence of alexithymia in these populations.
RESULTS
15 articles comparing autistic and neurotypical (NT) groups were identified. Autistic people scored significantly higher on all scores compared to the NT group. There was also a higher prevalence of alexithymia in the ASD group (49.93% compared to 4.89%), with a significantly increased risk of alexithymia in autistic participants.
CONCLUSIONS
This review highlights that alexithymia is common, rather than universal, in ASD, supporting a growing body of evidence that co-occurring autism and alexithymia represents a specific subgroup in the ASD population that may have specific clinical needs. More research is needed to understand the nature and implications of co-occurring ASD and alexithymia.
Topics: Adolescent; Adult; Affective Symptoms; Autistic Disorder; Comorbidity; Emotional Adjustment; Female; Humans; Male; Prevalence; Psychological Tests
PubMed: 30399531
DOI: 10.1016/j.eurpsy.2018.09.004 -
Criminal Behaviour and Mental Health :... Feb 2021Alexithymia is a trait involving difficulties processing emotions. Existing data suggest it is associated with violent offending. In violent offender programmes,...
BACKGROUND
Alexithymia is a trait involving difficulties processing emotions. Existing data suggest it is associated with violent offending. In violent offender programmes, therefore, violent offenders are screened for alexithymia and it is attended to if necessary. No studies have, however, examined alexithymia levels in nonviolent offenders and it is, therefore, unknown whether it is also a criminogenic factor in this population.
AIMS
To investigate alexithymia levels among incarcerated nonviolent offenders and compare them with a community comparison group.
METHOD
The 20-item Toronto Alexithymia Scale was used to compare the alexithymia levels of 67 incarcerated nonviolent offenders with a group of 139 people from the general public living in the community.
RESULTS
Alexithymia levels did not differ between the groups.
CONCLUSION
It appears that alexithymia is not a criminogenic factor for nonviolent offenders and screening of such offenders appears unnecessary.
Topics: Adult; Affective Symptoms; Aggression; Criminals; Emotions; Humans; Male; Middle Aged; Prisoners; Prisons; Psychometrics; Reproducibility of Results; Surveys and Questionnaires
PubMed: 33200470
DOI: 10.1002/cbm.2177 -
Scandinavian Journal of Psychology Aug 2015This paper presents a systematic review of the literature concerning the relationship between alexithymia and self-harm. Fifteen studies were selected following a... (Review)
Review
This paper presents a systematic review of the literature concerning the relationship between alexithymia and self-harm. Fifteen studies were selected following a systematic search of relevant databases. Results indicate significantly higher levels of alexithymia in women who self-harm compared with women who do not self-harm. Studies of men were less conclusive and require further investigation. A subsample of the studies found that childhood abuse and bullying were more likely to be associated with self-harm if alexithymia was present as a mediator. Other studies found that depression mediated between alexithymia and self-harm. The results indicate that the poor emotional cognition and expression associated with alexithymia may increase vulnerability to self-harm, particularly in women.
Topics: Adult Survivors of Child Abuse; Affective Symptoms; Female; Humans; Male; Self-Injurious Behavior; Surveys and Questionnaires
PubMed: 26011069
DOI: 10.1111/sjop.12217 -
Psychological Research Apr 2022In recent years, research on interoceptive abilities (i.e., sensibility, accuracy, and awareness) and their associations with emotional experience has flourished. Yet...
In recent years, research on interoceptive abilities (i.e., sensibility, accuracy, and awareness) and their associations with emotional experience has flourished. Yet interoceptive abilities in alexithymia-a personality trait characterized by a difficulty in the cognitive interpretation of emotional arousal, which impacts emotional experience-remain under-investigated, thereby limiting a full understanding of subjective emotional experience processing. Research has proposed two contrasting explanations thus far: in one model, the dimensions of interoceptive sensibility and accuracy in alexithymia would increase; in the other model, they would decrease. Surprisingly, the contribution of interoceptive awareness has been minimally researched. In this study (N = 182), the relationship between participants' level of alexithymia and the three interoceptive dimensions was tested. Our results show that the higher the level of alexithymia is, the higher interoceptive accuracy and sensibility (R = 0.29 and R = 0.14); conversely, the higher the level of alexithymia is, the lower interoceptive awareness (R = 0.36). Moreover, an ROC analysis reveals that interoceptive awareness is the most accurate predictor of alexithymia, yielding over 92% accuracy. Collectively, these results support a coherent understanding of interoceptive abilities in alexithymia, whereby the dissociation of interoceptive accuracy and awareness may explain the underlying psycho-physiological mechanisms of alexithymia. A possible neurocognitive mechanism is discussed which suggests insurgence of psychosomatic disorders in alexithymia and related psychotherapeutic approaches.
Topics: Affective Symptoms; Arousal; Dissociative Disorders; Emotions; Humans
PubMed: 34097132
DOI: 10.1007/s00426-021-01538-x -
Medwave May 2017Although the specialized literature on the etiology of alexithymia is controversial, neurobiological research has shown relevant advances. The aim of this review is to... (Review)
Review
Although the specialized literature on the etiology of alexithymia is controversial, neurobiological research has shown relevant advances. The aim of this review is to analyze the available evidence regarding the neurophysiological bases of alexithymia. A comprehensive review of available articles from Medline/PubMed, EBSCO and SciELO was conducted. Previously, alexithymia was linked to a reduced interhemispheric brain connection. From a childhood traumatic perspective, the right prefrontal cortex and the default mode network would experience alterations, first hypermetabolic (dopaminergic and glutamatergic dysregulation) and then hypometabolic-dissociative (serotonergic and opioid dysregulation), resulting in a distorted interoceptive and emotional awareness. Mirror neurons are the essential neurobiological substrate of theory of mind and social cognition, intrinsically linked to alexithymia, involving parietal, temporal, premotor, and cingulate cortices, and inferior frontal gyrus. Other structures involved are the amygdala (facial expression and emotional reactivity), the insula (interoception, emotional integration and empathy) and the cerebellum (limbic cerebellum and somatosensory awareness). Molecular genetics has detected polymorphisms in genes of the serotonin transporter, in the enzyme genes of dopaminergic metabolism and brain-derived neurotrophic factor, while the role of oxytocin is controversial. To sum up, we found several studies demonstrating the overwhelming evidence of a neurobiological basis underlying alexithymia; nevertheless, research is still inconclusive and must include environmental, traumatic, social, and psychological factors that contribute to the origin of the alexithymia.
Topics: Affective Symptoms; Brain; Brain-Derived Neurotrophic Factor; Dopamine; Emotions; Empathy; Humans; Mirror Neurons; Molecular Biology; Polymorphism, Genetic
PubMed: 28622282
DOI: 10.5867/medwave.2017.04.6960 -
Current Rheumatology Reports Jul 2016This review proposes a critical discussion of the recent studies investigating the presence of alexithymia in patients suffering from different chronic pain (CP)... (Review)
Review
This review proposes a critical discussion of the recent studies investigating the presence of alexithymia in patients suffering from different chronic pain (CP) conditions. The term CP refers to pain that persists or progresses over time, while alexithymia is an affective dysregulation, largely observed in psychosomatic diseases. Overall, the examined studies showed a high prevalence of alexithymia, especially difficulties in identifying feelings, in all the different CP conditions considered. However, the association between alexithymia and pain intensity was not always clear and in some studies this relationship appeared to be mediated by negative effect, especially depression. The role of alexithymia in CP should be clarified by future studies, paying particular attention to two aspects: the use of additional measures, in addition to the Toronto Alexithymia Scale, to assess alexithymia, and the analysis of the potential differences in the evolution of different CP conditions with reference to the presence or absence of alexithymia.
Topics: Affective Symptoms; Chronic Pain; Humans; Severity of Illness Index; Stress, Psychological
PubMed: 27215759
DOI: 10.1007/s11926-016-0592-x -
Current Cardiology Reports Jul 2023Personality characteristics, such as alexithymia, may lead to alterations in the autonomic nervous system functionality, predisposing individuals to an increased risk of... (Meta-Analysis)
Meta-Analysis Review
PURPOSE OF REVIEW
Personality characteristics, such as alexithymia, may lead to alterations in the autonomic nervous system functionality, predisposing individuals to an increased risk of hypertension (HTN). The present meta-analysis aimed to quantify the presence of alexithymia in people with HTN and to assess for potential sources of heterogeneity between studies. PubMed, PsycINFO and Scopus databases were systematically searched, using the following strings: ("alexithymia" OR "alexithymic") AND ("hypertension" OR "hypertensive"). Data were meta-analyzed with random-effects models.
RECENT FINDINGS
A total of 13 studies met the inclusion criteria. The prevalence of alexithymia in people with and without HTN were obtained from 5 studies (26.3% vs 15.0%; pooling of odd ratios, 3.15 [95% CI, 1.14;8.74]), whereas the mean level of alexithymia between people with and without HTN was obtained from 7 studies Hedges g, 1.39 [95% CI, -0.39;3.16]). There was a significant association between alexithymia prevalence and year of article publication (ĝ = -0.04; 95% CI, -0.07;-0.01), whereas no significant relationship was detected between the former and both sex and age. Findings revealed a greater prevalence of alexithymia in people with HTN than in participants without HTN. These findings suggest that alexithymia may contribute to both the onset and persistence of HTN symptomatology. However, future research is needed to clarify this association.
Topics: Humans; Hypertension; Affective Symptoms; Personality
PubMed: 37212924
DOI: 10.1007/s11886-023-01894-7 -
Psychological Bulletin 2023Alexithymia refers to difficulties identifying and describing one's emotions. Growing evidence suggests that alexithymia is a key transdiagnostic risk factor. Despite... (Meta-Analysis)
Meta-Analysis Review
Alexithymia refers to difficulties identifying and describing one's emotions. Growing evidence suggests that alexithymia is a key transdiagnostic risk factor. Despite its clinical importance, the etiology of alexithymia is largely unknown. The present study employs meta-analytic methods to summarize findings on the role of one hypothesized antecedent of adult alexithymia, namely child maltreatment. We obtained effect size estimates from 99 independent samples reported in 78 unique sources that reported both child maltreatment history and adult levels of alexithymia. These studies involved a total of 36,141 participants. Using correlation coefficients as our effect size index, we found that child maltreatment was positively related to overall adult alexithymia ( = .23 [.19, .27]). Notably, emotional abuse ( = .18 [.13, .23]), emotional neglect ( = .21 [.16, .26]), and physical neglect ( = .18 [.15, .22]) were the strongest predictors. Effects were moderated by gender, affiliation with clinical versus nonclinical samples, and publication status. Overall results were robust to publication bias and the presence of outliers. These findings contribute to a more nuanced understanding of the complex connection between different types of child maltreatment and alexithymia, providing greater insight into the early environmental influences on alexithymia. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
Topics: Adult; Humans; Affective Symptoms; Emotions; Risk Factors; Adult Survivors of Child Abuse
PubMed: 37261746
DOI: 10.1037/bul0000391 -
The Neuroscientist : a Review Journal... Apr 2024Whereas emotion theorists often keep their distance from the embodied approach, theorists of embodiment tend to treat emotion as a mainly physiologic process. However,... (Review)
Review
Whereas emotion theorists often keep their distance from the embodied approach, theorists of embodiment tend to treat emotion as a mainly physiologic process. However, intimate links between emotions and the body suggest that emotions are privileged phenomena to attempt to reintegrate mind and body and that the body helps the mind in shaping emotional responses. To date, research has favored the cerebrum over other parts of the brain as a substrate of embodied emotions. However, given the widely demonstrated contribution of the cerebellum to emotional processing, research in affective neuroscience should consider embodiment theory as a useful approach for evaluating the cerebellar role in emotion and affect. The aim of this review is to insert the cerebellum among the structures needed to embody emotions, providing illustrative examples of cerebellar involvement in embodied emotions (as occurring in empathic abilities) and in impaired identification and expression of embodied emotions (as occurring in alexithymia).
Topics: Humans; Emotions; Empathy; Brain; Affective Symptoms; Cerebellum
PubMed: 36052895
DOI: 10.1177/10738584221120187