1
|
Ludwig L, Pasman JA, Nicholson T, Aybek S, David AS, Tuck S, Kanaan RA, Roelofs K, Carson A, Stone J. Stressful life events and maltreatment in conversion (functional neurological) disorder: systematic review and meta-analysis of case-control studies. Lancet Psychiatry 2018; 5:307-320. [PMID: 29526521 DOI: 10.1016/s2215-0366(18)30051-8] [Citation(s) in RCA: 232] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 01/18/2018] [Accepted: 01/24/2018] [Indexed: 01/17/2023]
Abstract
BACKGROUND Stressful life events and maltreatment have traditionally been considered crucial in the development of conversion (functional neurological) disorder, but the evidence underpinning this association is not clear. We aimed to assess the association between stressors and functional neurological disorder. METHODS We systematically reviewed controlled studies reporting stressors occurring in childhood or adulthood, such as stressful life events and maltreatment (including sexual, physical abuse, and emotional neglect) and functional neurological disorder. We did a meta-analysis, with assessments of methodology, sources of bias, and sensitivity analyses. FINDINGS 34 case-control studies, with 1405 patients, were eligible. Studies were of moderate-to-low quality. The frequency of childhood and adulthood stressors was increased in cases compared with controls. Odds ratios (OR) were higher for emotional neglect in childhood (49% for cases vs 20% for controls; OR 5·6, 95% CI 2·4-13·1) compared with sexual abuse (24% vs 10%; 3·3, 2·2-4·8) or physical abuse (30% vs 12%; 3·9, 2·2-7·2). An association with stressful life events preceding onset (OR 2·8, 95% CI 1·4-6·0) was stronger in studies with better methods (interviews; 4·3, 1·4-13·2). Heterogeneity was significant between studies (I2 21·1-90·7%). 13 studies that specifically ascertained that the participants had not had either severe life events or any subtype of maltreatment all found a proportion of patients with functional neurological disorder reporting no stressor. INTERPRETATION Stressful life events and maltreatment are substantially more common in people with functional neurological disorder than in healthy controls and patient controls. Emotional neglect had a higher risk than traditionally emphasised sexual and physical abuse, but many cases report no stressors. This outcome supports changes to diagnostic criteria in DSM-5; stressors, although relevant to the cause in many patients, are not a core diagnostic feature. This result has implications for ICD-11. FUNDING None.
Collapse
Affiliation(s)
- Lea Ludwig
- Department of Clinical Psychology and Psychotherapy, Universität Hamburg, Hamburg, Germany; Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Joëlle A Pasman
- Developmental Psychopathology, Radboud University, Nijmegen, Netherlands
| | - Timothy Nicholson
- Section of Cognitive Neuropsychiatry, Institute of Psychiatry Psychology & Neuroscience, King's College London, London, UK
| | - Selma Aybek
- Section of Cognitive Neuropsychiatry, Institute of Psychiatry Psychology & Neuroscience, King's College London, London, UK; Laboratory for Behavioral Neurology and Imaging of Cognition, Fundamental Neurosciences Department, Geneva University, Geneva, Switzerland
| | - Anthony S David
- Section of Cognitive Neuropsychiatry, Institute of Psychiatry Psychology & Neuroscience, King's College London, London, UK
| | - Sharon Tuck
- Epidemiology and Statistics Core, Edinburgh Clinical Research Facility, Edinburgh, UK
| | - Richard A Kanaan
- Department of Psychiatry, University of Melbourne, Austin Health, Heidelberg, VIC, Australia; Florey Institute for Neuroscience and Mental Health, Heidelberg, VIC, Australia
| | - Karin Roelofs
- Behavioural Science Institute, Radboud University, Nijmegen, Netherlands; Donders Institute for Brain Cognition and Behaviour, Radboud University, Nijmegen, Netherlands
| | - Alan Carson
- Department of Clinical Neurosciences, NHS Lothian, Edinburgh, UK; Department of Rehabilitation Medicine, NHS Lothian, Edinburgh, UK; Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
| | - Jon Stone
- Department of Clinical Neurosciences, NHS Lothian, Edinburgh, UK; Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| |
Collapse
|
2
|
Brown RJ, Reuber M. Psychological and psychiatric aspects of psychogenic non-epileptic seizures (PNES): A systematic review. Clin Psychol Rev 2016; 45:157-82. [PMID: 27084446 DOI: 10.1016/j.cpr.2016.01.003] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 12/22/2015] [Accepted: 01/24/2016] [Indexed: 10/22/2022]
Abstract
Psychogenic non-epileptic seizures (PNES) are common in neurological settings and often associated with considerable distress and disability. The psychological mechanisms underlying PNES are poorly understood and there is a lack of well-established, evidence-based treatments. This paper advances our understanding of PNES by providing a comprehensive systematic review of the evidence pertaining to the main theoretical models of this phenomenon. Methodological quality appraisal and effect size calculation were conducted on one hundred forty empirical studies on the following aspects of PNES: life adversity, dissociation, anxiety, suggestibility, attentional dysfunction, family/relationship problems, insecure attachment, defence mechanisms, somatization/conversion, coping, emotion regulation, alexithymia, emotional processing, symptom modelling, learning and expectancy. Although most of the studies were only of low to moderate quality, some findings are sufficiently consistent to warrant tentative conclusions: (i) physical symptom reporting is elevated in patients with PNES; (ii) trait dissociation and exposure to traumatic events are common but not inevitable correlates of PNES; (iii) there is a mismatch between subjective reports of anxiety and physical arousal during PNES; and (iv) inconsistent findings in this area are likely to be attributable to the heterogeneity of patients with PNES. Empirical, theoretical and clinical implications are discussed.
Collapse
Affiliation(s)
- Richard J Brown
- 2nd Floor Zochonis Building, Brunswick Street, School of Psychological Sciences, University of Manchester, Manchester M13 9PL, UK.
| | - Markus Reuber
- Academic Neurology Unit, University of Sheffield, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, UK.
| |
Collapse
|
3
|
Roelofs K, pasman J. Stress, childhood trauma, and cognitive functions in functional neurologic disorders. HANDBOOK OF CLINICAL NEUROLOGY 2016; 139:139-155. [DOI: 10.1016/b978-0-12-801772-2.00013-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
4
|
Panagos PD, Merchant RC, Alunday RL. Psychogenic Seizures: A Focused Clinical Review for the Emergency Medicine Practitioner. Postgrad Med 2015; 122:34-8. [DOI: 10.3810/pgm.2010.01.2097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
5
|
Agrawal N, Gaynor D, Lomax A, Mula M. Multimodular psychotherapy intervention for nonepileptic attack disorder: an individualized pragmatic approach. Epilepsy Behav 2014; 41:144-8. [PMID: 25461207 DOI: 10.1016/j.yebeh.2014.09.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 09/12/2014] [Accepted: 09/13/2014] [Indexed: 11/17/2022]
Abstract
Nonepileptic attack disorder (NEAD) is a highly distressing and costly condition commonly seen in specialist epilepsy clinics. Consistently effective treatments for NEAD remain elusive, and findings from research indicate that there is no one form of psychological therapy that will be effective in such a heterogeneous group of patients. In this paper, we propose a multimodular approach to psychological therapy in NEAD, which allows the clinician to tailor an individualized management program for the patient appropriate to his/her needs.
Collapse
Affiliation(s)
- Niruj Agrawal
- Epilepsy Group, Atkinson Morley Regional Neuroscience Centre, St George's Hospital, London, UK; St George's, University of London, London, UK; South West London & St George's MH NHS Trust, London, UK; Department of Neuropsychiatry, St George's Hospital, London, UK
| | - Danielle Gaynor
- Department of Neuropsychiatry, St George's Hospital, London, UK
| | - Alice Lomax
- St George's, University of London, London, UK; Charing Cross Hospital, London, UK; Hammersmith Hospital, London, UK.
| | - Marco Mula
- Epilepsy Group, Atkinson Morley Regional Neuroscience Centre, St George's Hospital, London, UK; St George's, University of London, London, UK
| |
Collapse
|
6
|
Reuber M, Howlett S, Kemp S. Psychologic treatment of patients with psychogenic nonepileptic seizures. Expert Rev Neurother 2014; 5:737-52. [PMID: 16274332 DOI: 10.1586/14737175.5.6.737] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Psychogenic nonepileptic seizures are relatively common, often disabling and costly to patients and society. Most authorities consider psychologic treatment as the therapeutic intervention of choice. This review is intended primarily for psychologists and therapists who treat patients with psychogenic nonepileptic seizures, and for neurologists who make the diagnosis and wish to find out more about psychologic treatment options. The first section describes the nature and etiology of psychogenic nonepileptic seizures. General questions regarding the psychologic treatment of patients with psychogenic nonepileptic seizures are addressed, before discussing specific therapeutic approaches. The final part summarizes the authors' views on optimal treatment and the direction of future research.
Collapse
Affiliation(s)
- Markus Reuber
- Academic Neurology Unit, University of Sheffield, Department of Neurology, Royal Hallamshire Hospital, Glossop Road, Sheffield, S10 2JF, UK.
| | | | | |
Collapse
|
7
|
Scévola L, Teitelbaum J, Oddo S, Centurión E, Loidl CF, Kochen S, D Alessio L. Psychiatric disorders in patients with psychogenic nonepileptic seizures and drug-resistant epilepsy: a study of an Argentine population. Epilepsy Behav 2013; 29:155-60. [PMID: 23969203 DOI: 10.1016/j.yebeh.2013.07.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 07/11/2013] [Accepted: 07/13/2013] [Indexed: 12/01/2022]
Abstract
Epidemiological data show that up to 20-30% of patients with psychogenic nonepileptic seizures (PNESs), resembling drug-resistant epilepsy (DRE), are referred to tertiary epilepsy centers. Furthermore, both disorders present high psychiatric comorbidity, and video-EEG is the gold standard to make differential diagnoses. In this study, we described and compared the clinical presentation and the frequency of psychiatric disorders codified in DSM IV in two groups of patients, one with PNESs and the other with DRE, admitted in a tertiary care epilepsy center of Buenos Aires, Argentina. We included 35 patients with PNESs and 49 with DRE; all were admitted in the video-EEG unit in order to confirm an epilepsy diagnosis and determine surgical treatment possibilities. All patients underwent a neurological and psychiatric assessment, according to standardized protocol (SCID I and II; DSM IV criteria). Student's t test was performed to compare continuous variables and Chi square test to compare qualitative variables. In this study, 33 (67%) patients with DRE and 35 (100%) patients with PNESs met criteria for at least one disorder codified in Axis I of DSM IV (p=0.003). Differences in the frequency of psychiatric disorder presentation were found between groups. Anxiety disorders (16.32% vs 40%; p=0.015), trauma history (24.5% vs 48.57%; p=0.02), posttraumatic stress disorder (4.08% vs 22.85%; p=0.009), and personality cluster B disorders (18.37% vs 42.86%; p=0.02) were more frequent in the group with PNESs. Psychotic disorders were more frequent in the group with DRE (20.4% vs 2.85%; p=0.019). Depression was equally prevalent in both groups. Standardized psychiatric assessment provides information that could be used by the mental health professional who receives the referral in order to improve quality of care and smooth transitions to proper PNES treatment, which should include a multidisciplinary approach including neurology and psychiatry.
Collapse
Affiliation(s)
- Laura Scévola
- Epilepsy Center Ramos Mejía Hospital, Cell Biology and Neuroscience Institute (IBCN), Buenos Aires University (UBA)-CONICET, Buenos Aires, Argentina; Psychiatry Division, Ramos Mejía Hospital, Buenos Aires, Argentina.
| | | | | | | | | | | | | |
Collapse
|
8
|
Patients with psychogenic non-epileptic seizures referred to a tertiary epilepsy centre: patient characteristics in relation to diagnostic delay. Clin Neurol Neurosurg 2011; 114:217-22. [PMID: 22071205 DOI: 10.1016/j.clineuro.2011.10.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 10/11/2011] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This clinical study examines patient and seizure characteristics of patients with psychogenic non-epileptic seizures (PNES) in a tertiary epilepsy centre. The main focus was whether a new subgroup of PNES patients emerged with a relatively short referral time and possible specific characteristics. METHODS All PNES patients referred to a specialist program in our centre between mid 2007 and mid 2009 were consecutively included. This yielded a study cohort of 90 patients. RESULTS The majority of the patients have a patient history with many medical symptoms and they were or had been in treatment by a medical specialist. Furthermore diffuse psychological/psychiatric symptoms and subsequent treatments are also remarkably common, in general without a clear psychological diagnosis. The average time between seizure onset and referral to an epilepsy centre is remarkably low (4.29 years). About 50% of the patients were referred within 2 years of seizure onset. This 'active high speed referral group' had significantly more previous psychological complaints, significantly more previous psychological/psychiatric treatments and a trend towards more previous medical investigations. CONCLUSION There seems to be a new subgroup of PNES patients with a short referral time, characterized by a more active attitude towards examination of the symptoms in combination with an active attitude to apply for treatment. However, the PNES cohort as a whole is characterized by having somatoform symptoms based on a process of somatization.
Collapse
|
9
|
|
10
|
Gaynor D, Cock H, Agrawal N. Psychological treatments for functional non-epileptic attacks: a systematic review. Acta Neuropsychiatr 2009; 21:158-68. [PMID: 25384629 DOI: 10.1111/j.1601-5215.2009.00376.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE There is a lack of clarity about the most useful intervention for functional non-epileptic attacks (FNEA). Outcomes for this condition remain often poor, with considerable personal, social and economic impact. In order to guide clinical practice and future research in this area, we have performed a systematic review of the published literature on the psychological treatment of FNEA. METHODS A comprehensive literature search was carried out using key words: non-epileptic seizures; psychogenic seizures; psychogenic non-epileptic seizures; pseudoseizures; funny turns; non-epileptic attack; hysterical seizures; and pseudoepileptic. Studies specifically looking at psychological treatment of FNEA were identified. Studies of patients also having comorbid organic seizure disorders were excluded. RESULTS 17 studies that met the inclusion criteria were identified. A broad variety of psychological interventions for FNEA has been investigated. Only one randomised controlled trial has been completed to date. Existing evidence appears to suggest that various psychological treatments, including presenting the diagnosis, psychoeducation, behavioural therapies and mixed modality treatments, may be effective. CONCLUSION While a range of psychological treatments may be beneficial for this patient group, we do not have clear evidence to suggest which treatment is most efficacious. Specific elements of presenting the diagnosis and psychoeducation may be required in addition to traditional cognitive behavioural therapeutic approaches. Large, methodologically robust studies are urgently required to establish the most effective form of treatment.
Collapse
Affiliation(s)
- Danielle Gaynor
- 1Department of Neuropsychiatry, St George's Hospital, London, UK
| | - Hannah Cock
- 2Department of Neurology, St George's University of London, London, UK
| | - Niruj Agrawal
- 1Department of Neuropsychiatry, St George's Hospital, London, UK
| |
Collapse
|
11
|
Psychogenic non-epileptic seizures—Diagnostic issues: A critical review. Clin Neurol Neurosurg 2009; 111:1-9. [DOI: 10.1016/j.clineuro.2008.09.028] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 09/23/2008] [Accepted: 09/25/2008] [Indexed: 11/23/2022]
|
12
|
Reuber M. Psychogenic nonepileptic seizures: answers and questions. Epilepsy Behav 2008; 12:622-35. [PMID: 18164250 DOI: 10.1016/j.yebeh.2007.11.006] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2007] [Accepted: 11/18/2007] [Indexed: 10/22/2022]
Abstract
Psychogenic nonepileptic seizures (PNES) superficially resemble epileptic seizures, but are not associated with ictal electrical discharges in the brain. PNES constitute one of the most important differential diagnoses of epilepsy. However, despite the fact they have been recognized as a distinctive clinical phenomenon for centuries and that access to video/EEG monitoring has allowed clinicians to make near-certain diagnoses for several decades, our understanding of the etiology, underlying mental processes, and, subsequently, subdifferentiation, nosology, and treatment remains seriously deficient. Emphasizing the clinical picture throughout, the first part of this article is intended to "look and look again" at what we know about the epidemiology, semiology, clinical context, treatment, and prognosis of PNES. The second part is dedicated to the questions that remain to be answered. It argues that the most important reason our understanding of PNES remains limited is the focus on the visible manifestations of PNES or the seizures themselves. In contrast, subjective seizure manifestations and the biographic or clinical context in which they occur have been relatively neglected.
Collapse
Affiliation(s)
- Markus Reuber
- Academic Neurology Unit, University of Sheffield/Royal Hallamshire Hospital, Glossop Road, Sheffield, South Yorkshire S10 2JF, UK.
| |
Collapse
|
13
|
Lacey C, Cook M, Salzberg M. The neurologist, psychogenic nonepileptic seizures, and borderline personality disorder. Epilepsy Behav 2007; 11:492-8. [PMID: 18054130 DOI: 10.1016/j.yebeh.2007.09.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Revised: 09/06/2007] [Accepted: 09/07/2007] [Indexed: 01/08/2023]
Abstract
Patients with psychogenic nonepileptic seizures (PNES) are common in tertiary epilepsy centers, emergency departments, and neurological practices. Psychiatric discussion of patients with PNES has emphasized the role of trauma and dissociation. Personality disorder has been considered, but its extensive implications for neurological management have not been fully appreciated. We propose that the most difficult aspects of management stem not from the convulsive episodes, but from the personality disorder that frequently accompanies them. Although it is not the neurologist's role to treat personality disorder, the conduct of the physician-patient relationship can have potent consequences for good or ill on the outcome. We present a brief guide to current concepts of personality disorder; discuss the literature concerning its association with PNES, and offer practical guidelines for the conduct of the neurologist-patient relationship. This perspective offers resolutions to longstanding controversies, including how to communicate the diagnosis, discontinuing medication, and ongoing neurological contact.
Collapse
Affiliation(s)
- Cameron Lacey
- Centre for Clinical Neuroscience and Neurological Research, St. Vincent's Hospital Melbourne, Melbourne, Australia.
| | | | | |
Collapse
|
14
|
Ramsay RE, Macias FM, Rowan AJ. Diagnosing Epilepsy in the Elderly. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2007; 81:129-51. [PMID: 17433921 DOI: 10.1016/s0074-7742(06)81008-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Elderly individuals represent the fastest-growing segment of the US population. Seizures are common among elderly persons, and the etiology, clinical presentation, and prognosis of seizure disorders can often differ between elderly patients and younger individuals. However, published information regarding the diagnosis and management of epilepsy in elderly patients is scarce. Because a number of conditions that are common in elderly patients may resemble epilepsy, diagnosis can be challenging. Cardiovascular conditions, migraines, drug effects, infections, metabolic disturbances, sleep disorders, and psychiatric disorders are all associated with signs and symptoms that may often mimic epilepsy. New paradigms must be put into practice to establish an accurate diagnosis in the elderly patient; besides an initial evaluation, the patient history and an electroencephalogram should be obtained. Proper diagnosis is essential for proper treatment in the elderly patient.
Collapse
Affiliation(s)
- R Eugene Ramsay
- International Center for Epilepsy, Department of Neurology University of Miami School of Medicine, Miami, Florida 33136, USA
| | | | | |
Collapse
|
15
|
Sharpe D, Faye C. Non-epileptic seizures and child sexual abuse: A critical review of the literature. Clin Psychol Rev 2006; 26:1020-40. [PMID: 16472897 DOI: 10.1016/j.cpr.2005.11.011] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2005] [Revised: 11/28/2005] [Accepted: 11/28/2005] [Indexed: 10/25/2022]
Abstract
Non-epileptic seizures have received a substantial amount of attention in the psychiatric and medical literature, but comparatively little attention from psychologists. Non-epileptic seizures resemble epileptic seizures but lack the physiological symptoms of genuine epilepsy and are psychological in origin. Many authors have emphasized the role that child sexual abuse may play in the etiology of this disorder. In the present paper, we provide a review of 34 studies examining this relationship, followed by a meta-analysis of 19 effect sizes. While our statistical results support the professed link between child sexual abuse and non-epileptic seizures, we suggest that because of research design limitations, it is premature to draw any definitive conclusions regarding a relationship. Eight of these research design limitations are identified and discussed (e.g., the absence of comparison groups; an explicit and public definition of child sexual abuse). Alternatives to a traditional psychoanalytic perspective that emphasizes the role of child sexual abuse in the etiology of NES are presented. Specific recommendations for future research are made and psychologists are strongly encouraged to play a more active role in both researching and treating non-epileptic seizures.
Collapse
Affiliation(s)
- Donald Sharpe
- Psychology Department, University of Regina, Regina, SK, Canada S4S 0A2.
| | | |
Collapse
|
16
|
Dikel TN, Fennell EB, Gilmore RL. Posttraumatic stress disorder, dissociation, and sexual abuse history in epileptic and nonepileptic seizure patients. Epilepsy Behav 2003; 4:644-50. [PMID: 14698697 DOI: 10.1016/j.yebeh.2003.08.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rates of posttraumatic stress disorder (PTSD), dissociative symptoms, and childhood sexual abuse (CSA) are believed to be higher among patients with nonepileptic seizures (NES) than those with epileptic seizures (ES). However, women have higher rates of CSA and sexual assault than men. Comparisons of seizure type controlling for gender may produce different results. Data from an opportunity sample of 34 patients with ES and 17 with NES evaluated during or following phase 1 video-EEG monitoring demonstrated that patients with NES had statistically higher rates of PTSD and CSA and higher Dissociative Experiences Scale (DES) scores than patients with ES. No differences were found between women with NES and ES for histories of PTSD or CSA. Mean between-group DES score differences remained. Results indicated that PTSD, dissociation, and CSA may be common among women presenting to a tertiary epilepsy referral center for both ES and NES. Neither a positive history of CSA nor a history of PTSD was evidence against epilepsy.
Collapse
Affiliation(s)
- Thomas N Dikel
- Department of Pediatrics, University of Florida, Gainesville, FL, USA.
| | | | | |
Collapse
|
17
|
Abstract
There is no shortage of controversies when it comes to psychogenic pseudoseizures (PPS). In this addendum to the Iriarte et al. paper [Epilepsy Behav 4 (2003) 354], I review some controversial issues related to the treatment of PPS. First, I advocate the point that our first goal of therapy is not to attempt to stop the occurrence of PPS, but to ensure that patients and families have accepted that they do not suffer from epilepsy, because the most frequent cause of morbidity and mortality seen in these patients is related to their misdiagnosis as epilepsy patients and the resultant aggressive treatment in intensive care units. Remission of PPS should be our second goal! The second controversial point pertains to how long neurologists should continue to follow up patients after a diagnosis of PPS is reached, and I suggest some parameters to be used in reaching such decision. In the third controversial issue, I review the lack of communication between neurologists and psychiatrists exemplified by the misinterpretation by psychiatrists of the diagnostic value of video-EEG-telemetry studies and resulting mixed messages given to patients and families by neurologists and psychiatrists. The fourth controversial point pertains to the criteria to discontinue antiepileptic drugs after a diagnosis of PPS has been established. Finally, I discuss the timing of introducing a psychogenic cause during the presentation of the diagnosis to patient and family.
Collapse
Affiliation(s)
- Andres M Kanner
- Department of Neurological Sciences, Rush Medical College, Section of Epilepsy and Clinical Neurophysiology and Rush Epilepsy Center, Rush-Presbyterian St Luke's Medical Center, Chicago, IL 60612, USA.
| |
Collapse
|
18
|
Abstract
The population incidence of psychogenic nonepileptic seizures (PNES) may be only 4% that of epilepsy, but many patients with PNES have a tendency to seek medical attention, and PNES make up a larger share of the workload of neurologists and emergency and general physicians. Although a great number of publications describe how PNES can be distinguished from epileptic seizures, it usually takes several years to arrive at this diagnosis, and three-quarters of patients (with no additional epilepsy) are treated with anticonvulsants initially. However, the management of PNES as epileptic seizures can lead to significant iatrogenic harm. Moreover, the failure to recognize the psychological cause of the disorder detracts from addressing associated psychopathology and enhances secondary somatization processes. This review provides an overview of studies of the diagnosis, etiology, treatment, and prognosis of PNES. Physicians should always consider PNES in the differential diagnosis of a seizure disorder. If a diagnosis of PNES is possible, or a diagnosis of epilepsy in doubt, a clear diagnostic categorization should be sought. This should involve the assessment of the patient by a physician versed in the diagnosis of seizure disorders and, in many cases, the documentation of a typical seizure by video-EEG. Outcome may be improved if the diagnosis is more actively sought, made earlier, and communicated more convincingly.
Collapse
Affiliation(s)
- Markus Reuber
- Division of Genomic Medicine, University of Sheffield, Royal Hallamshire Hospital, Glossop Road, Sheffield, S10 2JF, UK.
| | | |
Collapse
|
19
|
Owczarek K. Anxiety as a differential factor in epileptic versus psychogenic pseudoepileptic seizures. Epilepsy Res 2003; 52:227-32. [PMID: 12536055 DOI: 10.1016/s0920-1211(02)00212-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Anxiety may be a hypothetical factor responsible for psychogenic pseudoepileptic seizures. The purpose of this study was to analyse anxiety indexes manifested in the Minnesota Multiphasic Personality Inventory. Patients were divided into three groups on the basis of a neurological examination and long-term video-monitoring. Group One (N=70; 58 F, 12 M) had only psychogenic pseudoepileptic seizures. Group Two (N=40; 31 F, 9 M) had both epileptic seizures and psychogenic pseudoepileptic seizures. Group Three (N=42; 30 F, 12 M) had only epileptic seizures and served as the control group. Patients with psychogenic pseudoepileptic seizures, alone or in combination with epileptic seizures scored significantly higher than the epileptic group on the following anxiety measures: Anxiety Sign (Gough) - AxS - (P<0.001), Expressive-repressive Index (Sandford, Webster and Freedman) - ERI (P<0.001), and the Neurotic score (Ruesch and Bowman) - NS (P<0.001). Difference between all three groups were found for the Triad Elevation Index (Lovell)-TI (P<0.001) and the Frustration Tolerance Index (Beall and Panton) - FT (P<0.005). These findings suggest that the existence of psychogenic pseudoepileptic seizures or the predisposition to such seizures is reflected in the anxiety dimensions of the personality profile. Psychological evaluation of anxiety may help us to gain a better understanding of, and discrimination between, patients with psychogenic pseudoepileptic seizures, mixed seizures and epileptic seizures.
Collapse
Affiliation(s)
- Krzysztof Owczarek
- Department of Neurology and Epileptology, Medical Centre for Postgraduate Education, 00-416, ul. Czerniakowska 231, Warszawa, Poland
| |
Collapse
|
20
|
Abstract
While the diagnostic features of psychogenic non-epileptic seizures have been better characterized in recent years, comparatively little is written about management. This review provides guidance to clinicians involved in the treatment of patients with psychogenic non-epileptic seizures and generates ideas for future research. It summarizes the recent literature specifically dealing with the treatment of such seizures and draws on the wider psychiatric literature on effective treatments for patients with other medically unexplained symptoms.
Collapse
Affiliation(s)
- Markus Reuber
- Department of Neurology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | | |
Collapse
|
21
|
Cragar DE, Berry DTR, Fakhoury TA, Cibula JE, Schmitt FA. A review of diagnostic techniques in the differential diagnosis of epileptic and nonepileptic seizures. Neuropsychol Rev 2002; 12:31-64. [PMID: 12090718 DOI: 10.1023/a:1015491123070] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The diagnosis of psychogenic nonepileptic seizures (PNES) is complex. Long-term electroencephalogram monitoring with video recording (video EEG) is the most common method of differential diagnosis of epilepsy and PNES. However, video EEG is complex, costly, and unavailable in some areas. Thus, alternative diagnostic techniques have been studied in the search for a diagnostic method that is as accurate as video EEG, but more cost effective, convenient, and readily available. This paper reviews the literature regarding possible diagnostic alternatives and organizes findings into 7 areas of study: demographic and medical history variables, seizure semiology, provocative testing, prolactin levels, single photon emission computed tomography, psychological testing, and neuropsychological testing. For each area, the literature is summarized, and conclusions about the accuracy of the technique as a diagnostic tool are drawn. Overall, it appears unlikely that any of the reviewed alternative techniques will replace video EEG monitoring; rather they may be more successful as complementary diagnostic tools. An important focus for further investigations involves combinations of diagnostic techniques for the differential diagnosis of epilepsy and PNES.
Collapse
Affiliation(s)
- Dona E Cragar
- Department of Psychology, University of Kentucky Medical Center, Lexington 40536, USA
| | | | | | | | | |
Collapse
|
22
|
Abstract
Psychogenic nonepileptic seizures (NES) can be classified into five categories. This review focuses on NES associated with emotional conflict, by far the most common and important group. Etiology is speculative, but the background histories of these patients are often similar. The presence of a trauma history, depression, post-traumatic stress symptoms, and the use of dissociation plus cognitive dysfunction possibly point to an organic etiology. The presentation of NES in children and adults is discussed, along with the differential diagnosis. The diagnostic differential is lengthy, with epileptic seizures of frontal lobe origin presenting a unique challenge. Diagnostic procedures are reviewed with an emphasis on the utility of hypnosis with seizure induction. Presenting the diagnosis to the patient, the role of the neurologist, and the role of the mental health consultant are reviewed. Issues in the doctor-patient relationship are also addressed, as well as the overall prognosis.
Collapse
Affiliation(s)
- J J Barry
- Department of Psychiatry, Stanford University, 401 Quarry Road, MC 5723, Stanford, CA 94305, USA.
| | | |
Collapse
|
23
|
|