Are there gender differences in those diagnosed with psychogenic nonepileptic seizures?

Functional neurological disorder in Saudi Arabia: A retrospective study

OBJECTIVES

To describe the clinical profile of a sample of Saudi patients with Functional Neurological Disorder (FND).

METHOD

A retrospective chart review of FND patients seen from 2021-2023 at a neuropsychiatry clinic at an academic tertiary care center in Jeddah, Saudi Arabia.

RESULTS

Out of 473 patients seen in the clinic during the review period, 52 (11%) had FND. Mean age was 34 years (standard deviation = 10.7), and 77% were female. Family dispute (39%) was the most reported risk factor, followed by sexual abuse (15%). The most common FND symptoms were nonepileptic seizures (61.5%) and abnormal movements (30.8%). Pain was reported by 57.7% and cognitive symptoms by 36.5%. FND symptoms were frequently attributed to supernatural causes (67.3%). During the last follow-up visit, 53.9% of patients reported FND symptom improvement, whereas 21.2% reported no change, 10.2% reported worsening, and 15% were lost to follow-up. The proportion of patients without symptom improvement was higher among patients with cognitive symptoms (45.5% vs 18% respectively, X2 = 10.08, df = 3, p = .018). The mean number of visits was highest in patients reporting worsening and the lowest was among patients reporting no change (F = 4.21, p = .017).

CONCLUSION

The role of family disputes in FND in the Middle East, the role of supernatural concepts in how FND is perceived, and the relatively high rate of subjective improvement within this sample of Saudi FND patients merit further exploration. Cognitive symptoms may be another prognostic indicator. Prospective multicenter studies of those with FND using standardized assessment measures are needed.

A comparison of patients with epileptic seizures (ES) versus those with psychogenic non-epileptic seizures (PNES) on measures of alexithymia, mood, and anxiety

OBJECTIVE

To compare persons with epilepsy (PWE) to those with psychogenic non-epileptic seizures (PNES) on measures of depression, anxiety, and alexithymia subscales (i.e., difficulty identifying emotions, difficulty describing emotions, and external-oriented thinking).

MATERIAL AND METHODS

In this retrospective study, 235 epilepsy patients and 90 patients with PNES were evaluated between 2012 and 2020 at the Northeast Regional Epilepsy Group. These patients had completed the Toronto Alexithymia Scale (TAS-20), The Center for Epidemiologic Studies - Depression Scale (CES-D) and The State-Trait Anxiety Inventory (STAI). Background information was collected regarding work/student/disability status at the time of the evaluation history of psychiatric diagnosis; psychological trauma; and involvement in psychotherapy either at the time of the evaluation or prior.

RESULTS

Significant differences between PWEs and those with PNES were found not only in historical data (e.g., Psychiatric History, History of Trauma, and History of Therapy) (p < .001) but also on measures of Depression (p = .002) and Anxiety (p < .001). ANOVA analysis also revealed significant differences in the distribution of the TAS-Total score, TAS-Describing emotions, and TAS-Identifying emotions. Using logistic regression (stepwise model) the optimal set of predictors for a differential diagnosis of epilepsy and PNES was combination of TAS-Identifying emotions score, history of psychological trauma, and history of therapy. The accuracy of the prediction was determined to be 80.2 %.

CONCLUSIONS

Although higher alexithymia rates are present in PNES and PWEs, clinicians may find a combination of TAS-Identifying Emotion score, history of trauma, and history of psychotherapy useful in supporting a differential diagnosis. Also, a subgroup may exist among those with PNES with high levels of alexithymia, depression, and anxiety that may require a different treatment approach focused on addressing difficulties in identifying and describing their emotions and their other symptomatology.

The neuropsychological presentation of women with epilepsy: Clinical considerations and future directions

Objective: Cognitive, mood, and behavioral changes are common among persons with epilepsy (PWE), resulting in a complex neuropsychological presentation. Women with epilepsy (WWE) represent a distinct cohort within the broader epilepsy population due to sex and gender-specific factors impacting epilepsy semiology and treatment. However, unique neuropsychological profiles among WWE have not been established. This narrative review aims to further define neuropsychological correlates in WWE and promote meaningful discussion related to enhancing the provision of neuropsychological care within this clinical population. Method: Current literature in PWE examining differences in cognitive function, mental health, and quality of life (QoL) between women and men was critically reviewed, emphasizing considerations for neuropsychological practice. Results: WWE demonstrate a preservation of verbal learning and memory compared to men both pre- and post-surgically, with sex-based, neurobiological mechanisms likely contributing to this association. WWE also have elevated risk for affective disorder psychopathology, suicidality, and traumatic experiences. Epidemiology related to psychotic and bipolar spectrum disorders is less clear, and findings are mixed regarding sex-specific behavioral side effects of antiseizure and psychotropic medication. Finally, hormonal and obstetric factors are highlighted as important contributors to neuropsychological symptoms in WWE, with elevated risk for low QoL and increased stigma associated with greater medical and psychiatric comorbidities compared to men. Conclusions: While emerging literature has begun to characterize the neuropsychological presentation of WWE, future research is needed to define sex and gender differences in neuropsychological sequalae among PWE to ensure consistency and quality of care for WWE.

Anger regulation in patients with functional neurological disorder: A systematic review

BACKGROUND

Functional neurological disorder (FND) has been associated with predisposing psychological factors, including dysregulation of anger-related processes. This paper provides a systematic review of the literature on anger regulation in FND. We evaluated anger-related research on patient self-report, observational, and laboratory based measures in FND. The review also addresses adverse childhood experiences and their relation with anger regulation, and the effects of therapies targeting anger regulation in FND.

METHODS

MEDLINE, EMBASE, and PsycINFO were searched for both quantitative and qualitative research, published in a peer-reviewed journal with a sample size of at least 5 (registered under Prospero protocol CRD42022314340).

RESULTS

A total of 2200 articles were identified. After screening, 54 studies were included in this review (k = 20 questionnaire-based studies, k = 12 laboratory studies, k = 21 using other methods, and k = 1 used both questionnaires and other methods) representing data of 2502 patients with FND. Questionnaire-based studies indicated elevated levels of state anger and trait hostility in patients with FND. Laboratory studies showed a higher tendency to avoid social threat cues, attentional bias towards angry faces, difficulties reliving anger, and preoccupation with frustrating barriers among FND patients versus controls. No specific childhood experiences were identified related to anger regulation in FND, and too few small and uncontrolled studies were available (k = 2) to assess the effects of anger-related interventions in FND. The overall quality of the studies was fair (k = 31) to poor (k = 18). Five studies (k = 5) were rated as having a good quality.

CONCLUSIONS

This review suggests that patients with FND have maladaptive anger regulation compared to individuals without FND. The findings also highlight the need for further research on the prevalence and consequences of anger-related processes in the development, diagnosis and treatment of FND.

Observational cohort study of 100 patients presenting with functional visual loss: clinical characteristics and comparison with other functional neurologic disorders

OBJECTIVE

Recent research has helped to develop a more detailed understanding of many functional neurologic disorders. The aim of this study was to increase our knowledge of functional visual loss and to compare the findings with those of other functional syndromes.

DESIGN

Prospective and retrospective observational cohort study.

METHODS

This study took place at neuro-ophthalmology clinics at 3 major hospitals in London, United Kingdom, over a 12-month period. The study population consisted of 157 participants, 100 with functional visual loss, 21 pathologic control subjects with organic visual loss, and 36 healthy nonpathologic control subjects. All participants had their diagnosis confirmed with a full neuro-ophthalmic examination, neuroimaging, and visual electrophysiology. A full assessment of all participants' medical history was obtained from their general practitioner, and all participants completed a series of questionnaires assessing relevant associations.

RESULTS

Data were obtained on 157 participants, 100 with functional visual loss, 21 pathologic control subjects with organic visual loss, and 36 healthy nonpathologic control subjects. Participants with functional visual loss were typically female (74%) with a mean age at vision loss of 40.0 ± 16 years. Sixty-four percent of participants had bilateral vision loss; the remainder, unilateral loss. Twenty-six percent of the total cohort had organic visual loss with functional overlay. Fifty percent of participants with functional visual loss had a preexisting psychiatric diagnosis, the most common being a depressive disorder. Sixty-two percent of participants had an ocular history, and 87% had a previously diagnosed medical illness, most commonly neurologic (45%). Thirty-five percent of participants self-reported at least 1 additional functional symptom.

CONCLUSIONS

Our population of functional visual loss subjects shares many similarities with the majority of patients with other functional neurologic disorders. They are generally young and female and have a greater than expected rate of psychiatric, medical, and coexisting ocular conditions. We found increased rates of precipitating stressors, clinical depression, and organic eye problems in subjects with functional visual loss.

'I just need to know what they are and if you can help me': Medicalization and the search for legitimacy in people diagnosed with non-epileptic attack disorder

This paper focuses on the struggles for legitimacy expressed by people with non-epileptic attack disorder (NEAD), one of the most common manifestations of functional neurological disorder presenting to emergency and secondary care services. Nonepileptic attacks are episodes of altered experience, awareness, and reduced self-control that superficially resemble epileptic seizures or other paroxysmal disorders but are not associated with physiological abnormalities sufficient to explain the semiological features. "Organic" or medicalized explanations are frequently sought by patients as the only legitimate explanation for symptoms, and consequently, a diagnosis of NEAD is often contested. Drawing on narrative interviews with patients from a small exploratory study and using a sociological perspective, we propose that a psychological account of NEAD does not provide a sufficiently legitimate path into a socially sanctioned sick role. This is a reflection of the dominance of biomedicine and the associated processes of medicalization. These processes are, we argue, the sole route to achieving legitimacy. The stress-based or psychologically oriented explanations offered to patients in contemporary medical models of the etiology of NEAD engender an uncertain identity and social position and fail to provide many patients with an account of the nature or origin of their symptoms that they find satisfactory or convincing. These struggles for legitimacy (shared by others with functional or somatoform conditions) are sharpened by key features of the contemporary healthcare landscape, such as the increasing framing of health through a lens of 'responsibilization'.

Functional Neurological Disorder Among Sexual and Gender Minority People

Sexual and gender minority (SGM) people can face unique stressors and structural discrimination that result in higher rates of neuropsychiatric symptoms, such as depression, anxiety, and suicidality. Although more rigorous studies are needed, emerging data suggest a possible higher prevalence of functional neurological disorder and other brain-mind-body conditions in SGM people. Representation and iterative feedback from affected community members is critical to the process of developing affirming environments. More research is needed to explore the relevance of functional neurologic disorder in SGM people within a biopsychosocial framework.

Functional Neurological Disorder in Saudi Arabia: An Update

Functional neurological disorder (FND) is characterized by neurological symptoms that lack congruence with traditional neurological diagnoses. Historically viewed through a Freudian psychoanalytic lens, FND has been conceptualized as a purely psychogenic disorder. However, the contemporary biopsychosocial perspective on FND emphasizes contributions of cognitive and neural circuit dysfunction and the disabling and involuntary nature of the illness. In Saudi Arabia, evidence suggests the prevalence of FND is significant. However, clinical programs and research focused on FND have been lacking. Studies from the region indicate that practitioners may have outdated views of FND. To address this, this narrative review provides an updated perspective on FND that is relevant to Saudi Arabia and the region. It delves into the evolving perception of FND, its underlying pathophysiology, risk factors, clinical presentations, and recent diagnostic and management advances. Unique features of FND in Saudi Arabia may include a significant role for family disputes as a risk factor, prevalent supernatural perceptions of FND, high prevalence of somatization, and cognitive dysfunction, and a potential favorable prognosis. The article concludes by providing the following recommendations related to FND in Saudi Arabia and the region: i) building educational programs to update clinicians about contemporary biopsychosocial perspectives on FND; ii) emphasizing a positive diagnostic approach based on clinical findings in FND; iii) instituting multidisciplinary programs to care for FND patients; iv) supporting systematic research efforts to explore culture-specific FND risk factors, patient outcome measures, and attitudes toward the disorder; v) developing national FND clinical practice guidelines; and vi) launching awareness campaigns to reduce FND stigma.

Psychiatric and psychological assessment of patients with drug-resistant epilepsy and psychogenic nonepileptic seizures (PNES) with no response to previous treatments

OBJECTIVE

Psychogenic nonepileptic seizures (PNES) are common imitators of epileptic seizures. Refractoriness to antiseizure medication hinders the differential diagnosis between ES and PNES, carrying deleterious consequences in patients with PNES. Psychiatric and psychological characteristics may assist in the differential diagnosis between drug-resistant epilepsy (DRE) and PNES. Nevertheless, current comprehensive psychiatric and psychological descriptive studies on both patient groups are scarce and with several study limitations. This study provides a comprehensive psychiatric and psychological characterization of Spanish patients with DRE and PNES.

METHOD

A cross-sectional and comparative study was completed with 104 patients with DRE and 21 with PNES. Psychiatric and psychological characteristics were assessed with the HADS, SCL-90-R, NEO-FFI-R, PDQ-4+, COPE, and QOLIE-31 tests. Parametric and non-parametric tests were used, and regression models were fit to further explore factors affecting patients' life quality.

RESULTS

Patients with PNES had greater levels of somatization and extraversion and were associated with benzodiazepine intake. Patients with DRE showed greater narcissistic personality disorder symptoms than those with PNES. In patients with DRE, difficulty in performing basic needs-related tasks and greater psychological distress severity and seizure frequency were associated with poorer life quality. In contrast, being a woman, having a psychiatric disorder history, and greater psychiatric symptoms' intensity were associated with poorer life quality in patients with PNES.

CONCLUSION

Patients with DRE and PNES share similar psychiatric and psychological characteristics, with only very few being significantly different.

Utilization of epilepsy care among Women Veterans: A population-based study

OBJECTIVE

Higher healthcare utilization in epilepsy correlates with better clinical and quality of life outcomes. Women Veterans with epilepsy (WVE) have unique characteristics that may affect access and utilization of care. This study investigates epilepsy care in WVE, with respect to utilization of outpatient, inpatient, and emergency room care.

METHODS

Data were collected from 58,525 Veterans with epilepsy using the Veterans Health Administration (VHA) Corporate Data Warehouse administrative data. Overall, 8.5% of the sample were women (n = 4983). Neurology visits, comprehensive epilepsy care, neuroimaging, ASM prescription and hospital and emergency care were analyzed, and comparisons were made with men Veterans with epilepsy to identify gender differences.

RESULTS

Compared to men, a greater proportion of WVE utilized services including neurology (73.8% vs. 62.0%), comprehensive epilepsy care (16.1% vs. 11.7%), epilepsy monitoring unit evaluation (EMU; 6.1% vs. 2.9%), neuroimaging (CT: 39.1% vs. 36.6%; MRI: 43.7% vs. 32.5%), and electroencephalograms: (EEG: 36.5% vs. 29.1%). WVE also evidenced higher percentages of seizure-related emergency room care usage vs. men (15.2 vs. 12.6) and hospitalizations (12.3 vs. 10.0) and were prescribed a greater number of ASMs (average:2.3 vs. 1.9). Valproate was prescribed to 17.6% of WVE, despite potential teratogenic concerns.

SIGNIFICANCE

WVE have greater utilization of epilepsy care within the VHA system compared to men, which could lead to better epilepsy management and quality of life. However, higher rates of emergency care, hospitalizations, and concurrent ASMs among WVE highlight the clinical complexity and raise concern for potentially comorbid conditions including psychogenic non-epileptic seizures.

Gender differences in risk factors and psychosocial functioning in children with psychogenic nonepileptic seizures

OBJECTIVE

Female predominance is evident in childhood-onset psychogenic nonepileptic seizures (PNES). Understanding gender-specific vulnerability to PNES may provide a unique insight into its cause and management. We aimed to investigate gender differences in demographic characteristics, triggering factors and psychosocial functioning in children and youth with PNES.

METHODS

We retrospectively reviewed patients who were evaluated in the PNES clinic at Children's Healthcare of Atlanta from July 2019 to March 2020 and completed questionnaires to assess adverse life events, psychosocial function (Pediatric Symptom Checklist-17 [PSC-17]), and somatic symptoms (Children's Somatic Symptom Inventory-8, [CSSI-8]).

RESULTS

Forty-nine consecutive patients (38 girls, 11 boys) with a median age of 15.0 (9-19) years were included in the study. We performed univariate analysis and evaluated significant variables related to PNES according to sex. Majority of both genders experienced daily to weekly PNES, came from dysfunctional families, scored high on PSC-17, were treated for neuropsychiatric illnesses, and experienced bothersome somatic symptoms. The variables significantly different between genders were suicidal thoughts, history of trauma, and learning disability. Suicidal thoughts and trauma, particularly sexual abuse, were significantly more prevalent in girls (p = 0.03) whereas learning disability was more common in boys (p = 0.03).

CONCLUSION

Females predominated in our PNES clinic (F:M = 3.5:1). Gender differences in predisposing factors were sexual abuse in females and learning disability in males. Our data highlight the gender-specific risk factors and vulnerability to PNES. The awareness of gender difference may guide more targeted intervention for children and youth with PNES.

The effect of attachment style on long-term outcomes in psychogenic nonepileptic seizures: Results from a prospective study

INTRODUCTION

Insecure and fearful attachment styles have been reported in psychogenic nonepileptic seizures (PNES). We have investigated associations between long-term clinical outcome in PNES, parenting and attachment styles and demographic, clinical, and neuropsychiatric factors.

MATERIAL AND METHODS

Patients aged at least 16 years and with documented PNES, according to criteria from the International League Against Epilepsy, were prospectively recruited to this study. They were assessed at baseline to determine clinical characteristics, experience of attachment and perceptions of experienced parenting styles, trauma history, dissociation, and health-related quality of life. At a mean of 70.45 (SD 29.0, range 22-130) months after inclusion, participants were contacted by telephone and asked about their current medical status and psychiatric/psychological interventions.

RESULTS

Of 53 patients included in the study, 51 (96 %) provided follow-up data. Most (84.9 %) patients were female, and the mean age of PNES onset was 25.6 years. At follow-up, 20 patients (39 %) were free of PNES. Those patients that had achieved PNES freedom at follow-up had lower levels of attachment anxiety (p = 0.01) and reported to have experienced their fathers as less controlling (p = 0.02) and their mothers as more caring (p = 0.04) at baseline compared with those patients still suffering from PNES. Seizure freedom at follow-up was predicted by male gender, younger age at PNES onset, and less attachment anxiety.

CONCLUSION

In our cohort from a tertiary epilepsy center the long-term prognosis of PNES is poor. Attachment anxiety is a risk factor for persistent PNES. It may be of therapeutic relevance to assess attachment patterns in patients with PNES.

Characterizing differences in psychiatric profiles between male and female veterans with epilepsy and psychogenic non-epileptic seizures

OBJECTIVE

While previous studies have described psychiatric profiles in patients with psychogenic non-epileptic seizures (PNES) and epileptic seizures (ES), a well-matched comparison between males and females has been lacking. To address this shortcoming, the present study sought to explore sex differences between male and female Veterans with ES and PNES in terms of psychiatric diagnoses, trauma histories, and psychiatric treatment.

METHODS

A male Veteran sample (PNES n = 87, ES n = 28) was identified matching age and seizure diagnosis with our previously-gathered female Veteran sample (PNES n = 90, ES n = 28). Retrospective chart review was used to obtain demographic, psychiatric, and seizure-related variables. Group differences between PNES and ES were first assessed among males followed by differences between males and females.

RESULTS

Males with PNES were more likely to receive psychiatric treatment (82.6 % vs. 60.7 %, p = 0.017), be prescribed more psychotropics (1.6 vs. 0.9, p = 0.003), and more likely to have childhood physical abuse (27.9 % vs. 3.6 %, p = 0.007) than those with ES. Compared to PNES, males with ES presented to the epilepsy monitoring unit (EMU) significantly later (12.8 years vs. 6.1 years, p = 0.009), and were prescribed more anti-seizure medications (ASMs) previously (2.1 vs. 0.8, p = 0.009) and currently (1.6 vs. 1.0, p = 0.001). Between males and females with PNES, females evidenced more depression (76.7 % vs. 26.3 %, p < 0.001), borderline personality disorder (18.9 % vs. 4.7 %, p = 0.004), suicidality (65.6 % vs. 33.7 %, p < 0.001), and childhood sexual abuse (37.8 % vs. 11.6 %, p < 0.001), while males had higher rates of substance use disorders (37.2 % vs. 8.9 %, p < 0.001).

SIGNIFICANCE

A greater psychiatric burden is seen among females compared to males with PNES, especially diagnoses of borderline personality disorder and depression. Higher rates of suicidality and inpatient psychiatric hospitalization may warrant particular consideration in screening and intervention efforts among female Veterans with PNES.

Quality of Life in Psychogenic Nonepileptic Seizures: An Evolutionary Concept Analysis

Psychogenic nonepileptic seizures (PNES) pose a serious threat to quality of life (QOL) in patients who battle the disorder. As psychological treatment options have progressed, improvement in QOL has become a more common desired outcome. Despite its relevance in PNES research and treatment, QOL has not been defined in the PNES population. Rodgers' Evolutionary Method of concept analysis was used to analyze 47 articles and clarify the concept of QOL in PNES. QOL in PNES is subjective, multidimensional, associated with symptoms, and dynamic in nature. This conceptualization of QOL in PNES may be useful in future PNES research and treatment.

Nonpharmacologic Interventions and Seizure Frequency in Patients With Psychogenic Nonepileptic Seizures: An Integrative Review

BACKGROUND

Psychogenic nonepileptic seizures (PNES) pose a heavy burden on patients' lives and the health care system. The symptoms of PNES are often debilitating and cause high rates of disability and poor quality of life. Many treatment options are available, but there is no clear consensus on best practices.

AIM

To critique and synthesize the current literature on nonpharmacologic interventions and effects on seizure frequency in patients with PNES.

METHODS

An integrative review guided by the Whittemore and Knafl approach.

RESULTS

The review included 24 studies published from 2010 to 2020. Interventions for PNES included individualized psychotherapies, group therapies, multimodal psychotherapies, self-help therapies, and complementary and alternative medicine therapies. Individual psychotherapies such as cognitive behavioral therapy and psychoeducation were the most used treatment modalities. The most effective treatments for seizure frequency reduction were those that included multiple psychotherapy sessions with a health care provider and covered multiple domains (e.g., understanding of diagnosis, identifying triggers, and developing effective coping strategies).

CONCLUSIONS

Seizure frequency can be reduced in patients with PNES with multiple nonpharmacologic interventions. However, seizure frequency is not considered a comprehensive outcome measure and provides little insight into other important life domains. Further research is needed on nonpharmacologic interventions for PNES and effects on other areas of life such as sleep, employment status, global functioning, and self-efficacy.

Psychological and demographic characteristics of 368 patients with dissociative seizures: data from the CODES cohort

BACKGROUND

We examined demographic, clinical, and psychological characteristics of a large cohort (n = 368) of adults with dissociative seizures (DS) recruited to the CODES randomised controlled trial (RCT) and explored differences associated with age at onset of DS, gender, and DS semiology.

METHODS

Prior to randomisation within the CODES RCT, we collected demographic and clinical data on 368 participants. We assessed psychiatric comorbidity using the Mini-International Neuropsychiatric Interview (M.I.N.I.) and a screening measure of personality disorder and measured anxiety, depression, psychological distress, somatic symptom burden, emotional expression, functional impact of DS, avoidance behaviour, and quality of life. We undertook comparisons based on reported age at DS onset (<40 v. ⩾40), gender (male v. female), and DS semiology (predominantly hyperkinetic v. hypokinetic).

RESULTS

Our cohort was predominantly female (72%) and characterised by high levels of socio-economic deprivation. Two-thirds had predominantly hyperkinetic DS. Of the total, 69% had ⩾1 comorbid M.I.N.I. diagnosis (median number = 2), with agoraphobia being the most common concurrent diagnosis. Clinical levels of distress were reported by 86% and characteristics associated with maladaptive personality traits by 60%. Moderate-to-severe functional impairment, high levels of somatic symptoms, and impaired quality of life were also reported. Women had a younger age at DS onset than men.

CONCLUSIONS

Our study highlights the burden of psychopathology and socio-economic deprivation in a large, heterogeneous cohort of patients with DS. The lack of clear differences based on gender, DS semiology and age at onset suggests these factors do not add substantially to the heterogeneity of the cohort.

Predictive utility of the Minnesota Multiphasic Personality Inventory-2-RF (MMPI-2-RF) in differentiating psychogenic nonepileptic seizures and epileptic seizures in male veterans

OBJECTIVE

While psychogenic nonepileptic seizures (PNES) and epileptic seizures (ES) often present similarly, they are etiologically distinct, and correct diagnosis is essential for ensuring appropriate treatment and improving outcomes. The Minnesota Multiphasic Personality Inventory-2-RF (MMPI-2-RF) may assist in differential diagnosis, but prior investigations have been limited by disproportionately female samples, inconsistent accounting for profile invalidity, and limited intra-scale variability from dichotomizing variables. The current investigation addressed these gaps by assessing diagnostic utility of the MMPI-2-RF in differentiating PNES and ES in a male sample of veterans while conservatively accounting for profile invalidity and using a statistical approach that allows for consideration of continuous independent variables to better appreciate intra-scale variance.

METHOD

One hundred and forty-four veterans completed the MMPI-2-RF and were diagnosed with PNES (57.6%) or ES (42.4%) by a board-certified neurologist following continuous video-EEG monitoring. Participants with validity scores falling in the definitely or likely invalid ranges were excluded to ensure construct validity among clinical/substantive scales. Independent samples t-tests assessed differences in MMPI-2-RF variables by diagnostic groups. Hierarchical stepwise logistical regressions assessed predictive utility of MMPI-2-RF indices. A clinical calculator was derived from regression findings to help with diagnostic prediction.

RESULTS

Males with PNES endorsed significantly higher scores on F-r, FBS-r, RBS, RC1, RC7, HPC, and NUC (medium to large effect sizes). The regression block that contained validity, restructured clinical (RC1), and substantive scales (GIC, SUI) had a hit rate of 75.69%, which was an improvement from the baseline model hit rate of 57.64%. Higher endorsement on RC1 and lower reporting on GIC significantly predicted PNES diagnosis for males.

CONCLUSIONS

Minnesota Multiphasic Personality Inventory-2-RF improved diagnostic accuracy of PNES versus ES among male veterans, and RC1 (somatic complaints) emerged as a significant predictor for males with PNES, in line with hypotheses. Several clinical/substantive scales assisted with differential diagnosis after careful accounting for profile validity. Future studies can validate findings among males outside of veteran samples.

Updated Review on the Diagnosis and Primary Management of Psychogenic Nonepileptic Seizure Disorders

Psychogenic nonepileptic seizures (PNES) are paroxystic and episodic events associated with motor, sensory, mental or autonomic manifestations, which resemble epileptic seizures (ES), but are not caused by epileptogenic activity. PNES affect between 20% and 30% of patients attending at epilepsy centers and constitute a serious mental health problem. PNES are often underdiagnosed, undertreated and mistaken with epilepsy. PNES are diagnosed after medical causes (epilepsy, syncope, stroke, etc.) have been ruled out, and psychological mechanisms are involved in their genesis and perpetuation. For psychiatry, there is not a single definition for PNES; the DSM-IV and ICD-10/11 describe the conversion and dissociative disorders, and the DSM-5 describes the functional neurological disorders. However, patients with PNES also have a high frequency of other comorbidities like depression, particularly trauma and post-traumatic stress disorder. It has been postulated that PNES are essentially dissociations that operate as a defensive psychological mechanism that use the mind as a defense to deal with traumas. With the advent of VEEG in the 90s, the recognition of PNES has significantly increased, and several psychological treatments have been developed. In this manuscript, we carried out a state-of-the-art review, with the aim to provide a critical approach to the extensive literature about PNES, focusing on diagnostic aspects, the primary management, and the available treatments that have been shown to be effective for the improvement of PNES.

A South African review of routinely-collected health data of psychogenic nonepileptic seizure patients referred to psychiatrists in Johannesburg

Patients with psychogenic nonepileptic seizures (PNES) are often referred to psychiatrists for treatment of functional neurological symptom disorder (FNSD). However, not all patients with FNSD have an identified psychiatric comorbidity [1]. The aim of this observational study was to characterize the clinical and psychiatric features of patients with PNES from Johannesburg, South Africa, where a high frequency of PNES has been reported [2], and compare these findings to other reports. We hypothesized that patient outcomes regarding treatment adherence and episode frequency would improve when treated within a closed multidisciplinary team. The data included a retrospective record review of patients diagnosed with PNES from an epilepsy monitoring unit and referred for psychiatric assessment and treatment between November 2013 and July 2017. Fifty-nine cases met the criteria for the study. There were 7 male and 52 female participants, aged between 14 and 72 years (M = 33.76, SD = 13.88). The most frequently reported comorbid symptoms were anxiety (90%); dissociative symptoms (51%); headaches (76%) and gastrointestinal symptoms (36%). Important patient characteristics included past substance abuse (76%); impaired attachment (86%); past trauma (69%) and sexual trauma (29%). Generalized anxiety disorder (76%), major depressive disorder (64%) and PTSD (22%) were the most prevalent psychiatric diagnoses. After receiving psychiatric treatment, 47% of patients experienced a decrease in the frequency of episodes, while 86% became aware of the precipitants of their episodes. Psychiatric data can valuably inform current theories of PNES management. This study contributes to the understanding of comorbid, aetiological, and prognostic factors that are crucial to refining coherent models that will guide practice.

Sex Effects on Coping, Dissociation, and PTSD in Patients With Non-epileptic Seizures

PURPOSE OF REVIEW

Sex differences in non-epileptic seizures (NES) are of interest, as the diagnosis is more frequent in women than men (3:1 ratio). This paper reviews clinical findings regarding sex differences in NES through selective literature review and compares coping measures between women and men in our NES clinic.

RECENT FINDINGS

Some distinguishing clinical features of NES in women and men are reported in the literature. However, we found few sex differences in demographics and coping. In our population, avoidance and dissociation were strongly related to one another and significantly related to co-occurring PTSD diagnosis, which was seen in over 50% in both sexes. Our findings confirm a high prevalence of PTSD in patients with NES, suggesting that comorbid PTSD may override sex differences in accounting for use of avoidant and dissociative coping. These findings raise the possibility that NES may, at times, represent an extreme variant in dysfunctional coping in patients with PTSD.

Clinical characteristics of functional (psychogenic nonepileptic) seizures: An international retrospective study

PURPOSE

We conducted a multicenter international cross-cultural comparative study to investigate clinical semiology and predisposing factors of functional seizures in a large cohort of patients living in different countries around the world. We hypothesized that semiology and predisposing factors of functional seizures differ between various world regions.

METHODS

We conducted this retrospective observational study in adults with functional seizures admitted to epilepsy centers in Iran, Qatar, USA, France, Georgia, Egypt, and United Arab Emirates (UAE). We assessed and compared the demographic and clinical seizure characteristics of these patients, according to the patients' reports and review of the ictal recordings during video-electroencephalogram (EEG) monitoring.

RESULTS

Five hundred nine patients were included (270 from Iran, 74 from Qatar, 63 from France, 43 from the USA, 22 from Egypt, 20 from UAE, and 17 from Georgia). Although all major manifestations of functional seizures (e.g., aura, loss of responsiveness, generalized motor seizures, ictal injury) were seen in all world regions, seizure semiology differed significantly across countries. Auras, ictal urinary incontinence, and ictal injury were more commonly reported by the American patients than patients from other world regions, whereas loss of responsiveness and generalized motor seizures were more frequently observed in the Iranian and American patients than the European and Arab patients.

CONCLUSION

Semiology of functional seizures seems to vary across various regions of the world; socioeconomic, cultural, ethnic, and religious differences may play an essential role in the modulation of functional seizures semiology across different nations and cultures.

Report on a psychoeducational intervention for psychogenic non-epileptic seizures in Argentina

PURPOSE

To examine the effects of a three-session psychoeducational intervention on patients diagnosed with psychogenic non-epileptic seizures (PNES) in an Argentinian public hospital. It was hypothesized that patients would experience improvements in their understanding of PNES, illness perception and affective scores, but might not necessarily experience a significant change in post-traumatic and dissociative symptoms and in seizure frequency.

METHODS

This study included 12 patients (10 women, 2 men) who were invited to participate in a psychoeducational group after receiving a V-EEG confirmed diagnosis of PNES. The group consisted of 3 sessions lasting 2 h each. Pre and post measures included Psychoeducational Intervention Questionnaire, State-Trait Anxiety Inventory, Beck Depression Inventory-II, Brief Illness Perception Questionnaire, Posttraumatic Stress Disorder Diagnostic Scale 5, Dissociative Experiences Scale (DES-M).

RESULTS

This psychoeducational intervention produced results that were similar to interventions reported in US and European studies with regard to changes on psychological measures. Moreover, many patients also reported (on the final day of the intervention) a decrease in seizure frequency. All patients reported that participating in the intervention was a positive experience. Also, all but one patient referred that the participation in the group would have a positive impact on their quality of life.

CONCLUSIONS

Psychoeducational interventions appear to have had positive results in Argentinian patients with PNES. This is initial step in the design of empirically based psychoeducational/supportive initiatives for patients in South America.

Depression, anxiety, and clinical history in Spanish-speaking American patients with psychogenic nonepileptic seizures (PNES) compared with Spanish-speaking American patients with epilepsy

OBJECTIVE

The objective of this study was to compare Spanish-speaking American patients with epilepsy to Spanish-speaking American patients with psychogenic nonepileptic seizures (PNES) on depression, anxiety, and other clinical variables.

BACKGROUND

Research on Spanish-speaking American patients with epilepsy or PNES is relatively infrequent, with only a few studies on psychopathology in these two patient groups. Studies of English-speaking patients indicate that those with PNES present with greater depression and anxiety and report poorer quality of life (QOL) when compared with persons with epilepsy (PWEs). Similarly, although psychological trauma is observed in both groups, those with PNES appear to have more traumatic exposure compared with PWEs.

METHODS

This is a retrospective study of 74 Spanish-speaking PWEs (49 women, 31 men) and 34 Spanish-speaking patients with PNES (28 women, 4 men) (2004 to 2017). The diagnosis of epilepsy or PNES was confirmed with video-EEG. Demographic and clinical (psychological trauma, history of psychological treatment, etc.) data were collected, and Spanish versions of the Beck Depression Inventory - second edition (BDI-II) and Beck Anxiety Inventory (BAI) were completed by the patients.

RESULTS

Patients with PWEs (M = 18.19, SD = 12.89) differed significantly from those with PNES on a measure of depression (BDI-II, (M = 24.12, SD = 11.20); t (92) = -2.22, p = 0.01). In addition, PWEs (M = 15.76, SD = 14.24) also differed significantly when compared with patients with PNES on a measure of anxiety (BAI, (M = 22.46, SD = 14.02); t (93) = -2.05, p = 0.02). Significant differences in clinical and demographic data were also noted.

CONCLUSIONS

Spanish-speaking American patients with PNES were significantly more depressed and anxious and reported greater exposure to sexual trauma as compared with PWEs. Furthermore, patients with PNES tended to report more prediagnosis utilization of mental health services than PWEs. After adjusting for potential linear effects of other predictors (e.g., gender, age, seizure frequency, and psychological trauma), only a reported history of psychological trauma had a linear relationship with a depression score while higher seizure frequency and history of mental health treatment had linear relationships with an anxiety score.

Gender Differences in Functional Movement Disorders

Background

Functional neurological disorders are generally more common in females than males, but the reason for this gender difference is not well understood.

Objectives

In this study, we aim to compare the clinical and demographic features of functional movement disorders (FMDs) between males and females.

Methods

We examined clinical data and video-recordings of patients with FMDs evaluated at the Baylor College of Medicine Movement Disorders Clinic.

Results

Of the 196 patients with FMDs, males represented only 30% (n = 59) of the entire cohort. Men had an older age at onset: 40.5 versus 34.1 years (P = 0.026) and an older age at evaluation: 43.8 versus 38.1 years (P = 0.041) compared to women. Functional dystonia was more frequently observed in women: 47.5 versus 20.3% (P < 0.001), but there was a trend for higher frequency of functional gait disorder in men: 44 versus 30% (P = 0.056). Females were particularly over-represented (73.7%) in children and adolescents; but the genders were equally represented in patients aged ≥50 years.

Conclusions

Female patients are over-represented in FMDs, except in individuals aged ≥50 years. Compared to female patients, males with FMDs present later in life and are less likely to have functional dystonia.

Gender-Related Differences in Semiology of Psychogenic Non-Epileptic Seizures

Introduction

The aim of the study is to detect possible gender-related differences in the semiology of psychogenic non-epileptic seizures (PNES).

Methods

One hundred fifty-five patients (male: female=63:92) aged 13 to 67 years, who were diagnosed with PNES by video-monitoring electroencephalogram (EEG) between 2010 and 2017, were included in this retrospective study. Patients were grouped according to their gender. The primary semiological characteristics of PNES for each case were defined, standardized, and categorized by an epileptologist during video-monitoring EEG. The chi-square test and the Fisher exact test were used statistically.

Results

An age histogram showed peaks at ages 20 to 23 and at ages 40 to 43, which were more prominent in the female gender. Whereas major motor activity (p=0.032), lateralizing motor activity (p=0.017), and opisthotonic posture and pelvic thrust motion (p=0.017) were significantly related to the male gender, weeping (p<0.001) was significantly related to the female gender.

Conclusion

Our study showed that there are some semiological differences between the genders in PNES. In male patients, lateralized motor findings are more prominent and not accompanied by ictal crying in seizures, which may lead to further confusion with epileptic seizures. It is important to know the semiological characteristics for early and accurate diagnosis.

Adult-onset psychogenic nonepileptic seizures: A multicenter international study

PURPOSE

The aim of this multicenter international cross-cultural study was to compare clinical variables in a large sample of people with adult-onset psychogenic nonepileptic seizures (PNES).

METHODS

In this retrospective study, we evaluated persons with documented PNES, who were older than 16 years of age at the onset, from four countries (i.e., Iran, Brazil, Venezuela, and Argentina) regarding their age, gender, PNES semiology, and possible predisposing factors.

RESULTS

We included 389 patients (244 from Iran, 66 from Brazil, 51 from Venezuela, and 28 from Argentina). Age at diagnosis was 32 ± 9 years (range: 17-64 years), and age at the onset of seizures was 27 ± 8 years (range: 17-49 years). There was a female predominance in all countries. The demographic characteristics and factors associated with PNES were similar among the countries. However, there were significant semiological differences among the countries.

CONCLUSION

This study corroborates the notion that PNES share more similarities than differences cross-culturally and across international borders. However, the background determined by cultural, ethnic, and religious differences may influence the semiology of PNES. Further cross-cultural studies involving more than two continents may advance our understanding of PNES.

Sex differences in demographic and clinical characteristics of psychogenic nonepileptic seizures: A retrospective multicenter international study

PURPOSE

Sex-related differences have been reported in patients with neurological and psychiatric disorders. It is also plausible to assume that there might be differences between females and males with psychogenic nonepileptic seizures (PNES).

METHODS

In this retrospective study, we investigated patients with PNES, who were admitted to the epilepsy monitoring units at centers in Iran, the USA, Canada, Brazil, Argentina, and Venezuela. Age, sex, age at seizure onset, seizure semiology, factors potentially predisposing to PNES, and video-electroencephalography recording of all patients were registered routinely.

RESULTS

Four hundred and fifty-one patients had PNES-only and were eligible for inclusion; 305 patients (67.6%) were females. We executed a logistic regression analysis, evaluating significant variables in univariate analyses (i.e., age, age at onset, aura, presence of historical sexual or physical abuse, and family dysfunction). The only variables retaining significance were historical sexual abuse (p = 0.005) and presence of aura (p = 0.01); physical abuse was borderline significant (p = 0.05) (all three were more prevalent among females).

CONCLUSION

Similarities between females and males outweigh the differences with regard to the demographic and clinical characteristics of PNES. However, notable differences are that females more often report lifetime adverse experiences (sexual and probably physical abuse) and auras. While social, psychological, and genetic factors may interact with lifetime adverse experiences in the inception of PNES, the link is not yet clear. This is an interesting avenue for future studies.

Presentation of psychogenic nonepileptic seizures in Hawaii's ethnoracially diverse population

PURPOSE

This exploratory study compared the semiology of psychogenic nonepileptic seizures (PNES) between a diverse group of patients in the state of Hawaii. This study may expand understanding of PNES across different ethnocultural and gender groups.

METHODS

A retrospective chart review of patients admitted to our Epilepsy Monitoring Unit (EMU) over a 4-year period was performed to compare semiology in different ethnic groups and gender.

RESULTS

A total of 139 patients were included in this study, 37% (n = 51) with PNES, 34% (n = 47) with epilepsy only, and 29% (n = 41) with other non-PNES, nonepilepsy diagnosis. The number of Asians with PNES were found to differ when compared with the patients with epilepsy and the patients with non-PNES, nonepilepsy diagnosis. A positive trend was found in the number of Native Hawaiians and Caucasians with PNES in comparison with patients with non-PNES, nonepilepsy diagnosis. In addition, three semiology of PNES in Native Hawaiians were found to differ in comparison with other ethnic groups with PNES: rhythmic motor, mixed semiology, and nonepileptic aura. There is a significant difference in all motor manifestation between males and females in Native Hawaiians. Between patients with PNES, patients with epilepsy, and patients with non-PNES, nonepilepsy diagnosis, significant correlation was found in psychiatric disorders including posttraumatic stress disorder (PTSD), anxiety, and any psychiatric disorder.

CONCLUSION

This cross-cultural study found significant differences in the expression of PNES across key ethnoracial groups for the Islands of Hawaii. These findings have implications to the diagnosis and treatment of PNES for Native Hawaiians and other Pacific Islanders in the United States.

Avoidance in nonepileptic attack disorder: A systematic review and meta-analyses

BACKGROUND

Avoidance is the active process of trying to escape from or not experience situations, places, thoughts, or feelings. This can be done through behavioral or cognitive strategies, or more broadly, a combination of both, utilized in an attempt to disengage from private experiences referred to as experiential avoidance (EA). Avoidance is considered important in the development and maintenance of nonepileptic attack disorder (NEAD). This review aimed to understand avoidance in NEAD and evaluate its role as a contributory factor.

METHODS

Fourteen articles were identified by searching Cumulative Index to Nursing and Allied Health (CINAHL), MEDLINE Complete, PsycINFO, and EMBASE and were combined in a narrative synthesis. Six of these articles were included in a meta-analysis comparing levels of EA for individuals with NEAD and healthy controls (HC), and four were included in a meta-analysis comparing EA in NEAD to epilepsy comparisons (EC).

CONCLUSIONS

Experiential avoidance appears to be a strategy that is used by a high proportion of the population with NEAD. The group with NEAD utilized significantly more avoidance compared with both the HC and EC. However, further research is needed to understand the extent and types of avoidance that are relevant.

Psychological trauma, somatization, dissociation, and psychiatric comorbidities in patients with psychogenic nonepileptic seizures compared with those in patients with intractable partial epilepsy

OBJECTIVE

The objective of this study was to compare patients with intractable epilepsy with patients with psychogenic nonepileptic seizures (PNES) on the presence of psychological traumas, clinical factors, and psychological measures of somatization and dissociation.

BACKGROUND

Several studies have reported a high prevalence of psychological trauma in patients with PNES, while less have examined the prevalence of psychological trauma in patients with epilepsy and compared both groups. Reports have been somewhat divergent with some describing significantly higher prevalence in physical abuse, others, in emotional abuse/neglect, and others, in sexual abuse in patients with PNES compared with those in patients with epilepsy.

METHODS

This is a retrospective study of 96 patients (61 women, 35 men) with intractable epilepsy (2009 to 2017) and 161 patients (107 women, 54 men) with PNES (2008 to 2018). Demographic and clinical (psychological trauma, depression, anxiety, seizure frequency, and number of antiepileptic drugs) data were collected. The Trauma Symptom Inventory II and the Minnesota Multiphasic Personality Inventory 2RF were administered.

RESULTS

Patients with PNES differed significantly from those with intractable epilepsy on sexual trauma (χ² (5df, N = 257) =9.787, p < .002) and "other" trauma (χ² (5df, N = 257) = 17.9076, p < .000). On psychological measures, there was a significant difference on Somatization scores in patients with PNES (M = 59.63, SD = 11.47) and patients with intractable epilepsy (M = 53.98, SD = 11.31); t(173) = 2.8396, p = .0051, but no difference was noted on a measure of Dissociation. Subsequent principal components analysis revealed that the first 3 principal components (sexual, physical, and other trauma) explained 74.19% of the variability, and that one principal component (dissociation, somatization, demoralization) explained 61.57% of the variability. However, after adjusting for the effects of covariates, only the presence of trauma discriminated between epilepsy and PNES.

CONCLUSIONS

Patients with PNES diagnoses differed from those with epilepsy on a Somatization scale but not on Dissociation or Intrusive Experiences and exhibited significantly higher rates of sexual and "other" trauma compared with those with intractable epilepsy. However, subsequent analyses revealed that a history of psychological trauma was the only condition found to discriminate between patients with PNES and those with epilepsy. These findings suggest that during initial workup and diagnosis, when patients report a history of psychological trauma (sexual or otherwise) a psychogenic nonepileptic etiology should be strongly considered in the differential diagnosis.

Quality of life and psychological dysfunction in traumatized and nontraumatized patients with psychogenic nonepileptic seizures (PNES)

OBJECTIVES

Psychogenic nonepileptic seizures (PNES) have the appearance of epileptic seizures, yet show no epileptiform discharges in the brain. The quality of life (QOL) in patients with PNES is reportedly low and trauma eems to be a relevant risk factor. The objective of this study was to examine the difference between measures of (epilepsy-specific) QOL (Quality of Life in Epilepsy Inventory; QOLIE-31p) and psychological dysfunction (trauma symptom inventory; TSI) between patients with diagnosed PNES with self-reported trauma and those without self-reported trauma.

METHODS

Patients whose PNES diagnoses were through video-electroencephalogram (EEG) monitoring at the Northeast Regional Epilepsy Group between 2008 and 2018 were included. Patients who reported to have a history of psychological trauma and those who did not were assigned to separate groups. Scores from the TSI and QOLIE-31p were compared by using multivariate analysis of covariance.

RESULTS

The total sample was comprised of 217 adult patients, 148 of which self-reported as having experienced psychological trauma in the past and 69 who did not report any psychological trauma. Traumatized patients significantly differed in terms of QOL and TSI from nontraumatized patients. Traumatized patients were demonstrated to have lower scores on the subdomain "energy" of the QOLIE-31p and the total QOLIE-31p score compared to the nontraumatized group. Similarly, the traumatized group had significantly higher scores on nearly all TSI subscales with the exception of suicidality, sexual disturbances, and somatization.

CONCLUSION

This study demonstrated significant differences between patients with PNES who have been psychologically traumatized and those who have not. In particular, patients with a history of psychological trauma present greater psychopathology and would possibly benefit from rapid identification and referral to trauma-based therapy. In turn, this may result in a reduction of disease burden, increase QOL, and a reduction in healthcare costs resulting from diagnostic delays and implementation of less targeted treatments.

Gender differences in prevalence of psychiatric disorders, levels of alexithymia, and coping strategies in patients with refractory mesial temporal epilepsy and comorbid psychogenic nonepileptic seizures

OBJECTIVE

The objective of this study was to investigate the psychological aspects and psychiatric disorders (PDs) in patients dually diagnosed with refractory temporal lobe epilepsy and mesial temporal sclerosis (TLE-MTS) with psychogenic nonepileptic seizures (PNES) treated in a tertiary center in order to find any gender differences in psychiatric, clinical, and sociodemographic characteristics.

METHOD

Psychiatric assessment was performed through the Diagnostic and Statistical Manual for Psychiatric Disorders - 5th edition (DSM-5). The Brazilian versions of the Medical Outcomes Study 36 (SF-36), Toronto Alexithymia Scale (TAS-20), Hamilton Depression Scale (HAM-D), Hamilton Anxiety Scale (HAM-A), and Ways of Coping Checklist (WCC) were applied.

RESULTS

Of the 47 patients enrolled (25 females; 53.2%), females were significantly more likely to have a history of previous psychiatric treatment (P=0.02), family history of epilepsy (P=0.01), and family history of PD (P=0.03). They also presented earlier onset of PNES (P=0.01) and higher PNES duration (P=0.02) compared with males. Major depressive disorder (MDD) was the most frequent PD (24; 51.0%). Females presented more psychiatric diagnoses (P<0.001), more diagnoses of MDD (P<0.001), and posttraumatic stress disorder (PTSD) (P<0.001). Several differences regarding quality of life, levels of alexithymia, anxiety/depressive symptoms, and coping strategies were observed between groups.

CONCLUSIONS

There are significant gender differences in psychiatric, clinical, and sociodemographic aspects in a group of patients with TLE-MTS and PNES, as well as in quality of life, levels of alexithymia, anxiety/depressive symptoms, and coping strategies. These gender differences suggest that specific approaches might be adopted depending on the patient's gender and, consequently, their distinct psychological/psychiatric profile.

Resilience linked to personality dimensions, alexithymia and affective symptoms in motor functional neurological disorders

OBJECTIVE

Reduced resilience, a construct associated with maladaptive stress coping and a predisposing vulnerability for Functional Neurological Disorders (FND), has been under-studied compared to other neuropsychiatric factors in FND. This prospective case-control study investigated self-reported resilience in patients with FND compared to controls and examined relationships between resilience and affective symptoms, personality traits, alexithymia, health status and adverse life event burden.

METHODS

50 individuals with motor FND and 47 healthy controls participated. A univariate test followed by a logistic regression analysis investigated group-level differences in Connor-Davidson Resilience Scale (CD-RISC) scores. For within-group analyses performed separately in patients with FND and controls, univariate screening tests followed by multivariate linear regression analyses examined factors associated with self-reported resilience.

RESULTS

Adjusting for age, gender, education status, ethnicity and lifetime adverse event burden, patients with FND reported reduced resilience compared to controls. Within-group analyses in patients with FND showed that individual-differences in mental health, extraversion, conscientiousness, and openness positively correlated with CD-RISC scores; post-traumatic stress disorder symptom severity, depression, anxiety, alexithymia and neuroticism scores negatively correlated with CD-RISC scores. Extraversion independently predicted resilience scores in patients with FND. In control subjects, univariate associations were appreciated between CD-RISC scores and gender, personality traits, anxiety, alexithymia and physical health; conscientiousness independently predicted resilience in controls.

CONCLUSION

Patients with FND reported reduced resilience, and CD-RISC scores covaried with other important predisposing vulnerabilities for the development of FND. Future research should investigate if the CD-RISC is predictive of clinical outcomes in patients with FND.