ABSTRACT
The aim of this study was to evaluate the frequency of epilepsy in patients who presented psychogenic non-epileptic seizures (PNES). The evaluation was carried out during intensive VEEG monitoring in a diagnostic center for epilepsy in a university hospital. The difficulties involved in reaching this diagnosis are discussed. Ninety-eight patients underwent intensive and prolonged video-electroencephalographic (VEEG) monitoring; out of these, a total of 28 patients presented PNES during monitoring. Epilepsy was defined as present when the patient presented epileptic seizures during VEEG monitoring or when, although not presenting epileptic seizures during monitoring, the patient presented unequivocal interictal epileptiform discharges. The frequency of epilepsy in patients with PNES was 50% (14 patients). Our findings suggest that the frequency of epilepsy in patients with PNES is much higher than that of previous studies, and point out the need, at least in some cases, for prolonging the evaluation of patients with PNES who have clinical histories indicating epilepsy.
Subject(s)
Epilepsy/diagnosis , Seizures/diagnosis , Adolescent , Adult , Diagnosis, Differential , Electroencephalography , Female , Humans , Male , Middle Aged , Video Recording , Young AdultABSTRACT
The aim of this study was to evaluate the frequency of epilepsy in patients who presented psychogenic non-epileptic seizures (PNES). The evaluation was carried out during intensive VEEG monitoring in a diagnostic center for epilepsy in a university hospital. The difficulties involved in reaching this diagnosis are discussed. Ninety-eight patients underwent intensive and prolonged video-electroencephalographic (VEEG) monitoring; out of these, a total of 28 patients presented PNES during monitoring. Epilepsy was defined as present when the patient presented epileptic seizures during VEEG monitoring or when, although not presenting epileptic seizures during monitoring, the patient presented unequivocal interictal epileptiform discharges. The frequency of epilepsy in patients with PNES was 50 percent (14 patients). Our findings suggest that the frequency of epilepsy in patients with PNES is much higher than that of previous studies, and point out the need, at least in some cases, for prolonging the evaluation of patients with PNES who have clinical histories indicating epilepsy.
O objetivo deste estudo foi avaliar a frequência de epilepsia em pacientes que apresentaram crises não epilépticas psicogênicas (CNEP). Isto foi realizado durante monitoração intensiva por video-EEG num centro diagnóstico de epilepsia em um hospital universitário. As dificuldades envolvidas para se chegar a este diagnóstico são discutidas. Noventa e oito pacientes foram submetidos a monitoração intensiva por video-EEG; 28 destes pacientes apresentaram CNEP durante a monitoração. Epilepsia foi considerada presente quando o paciente apresentou crises epilépticas durante a avaliação pelo video-EEG ou quando, apesar da não ocorrência de crises epilépticas durante a avaliação, descargas epilépticas interictais inequívocas estavam presentes. A frequência de epilepsia em pacientes com CNEP foi 50 por cento (14 pacientes). Nossos achados sugerem que a frequência de epilepsia em pacientes com CNEP é maior do que a apresentada em estudos anteriores e apontam para a necessidade de, ao menos em alguns casos, prolongar a avaliação de pacientes com CNEP, mas com história clínica sugestiva de epilepsia.
Subject(s)
Adolescent , Adult , Female , Humans , Male , Middle Aged , Young Adult , Epilepsy/diagnosis , Seizures/diagnosis , Diagnosis, Differential , Electroencephalography , Video Recording , Young AdultABSTRACT
The authors evaluate 26 patients with suspected psychogenic non-epileptic seizures (PNES) who were referred to prolonged intensive video EEG (VEEG) in an epilepsy diagnostic center at the University of São Paulo, Brazil. Following the investigative protocol, 50% of the patients received a diagnosis of PNES, 15.4% of epilepsy, and 34.6% of associated PNES and epilepsy. In all patients in our series, PNES were the pseudoneurological presentations of dissociative or conversion symptoms in patients presenting the following mental disorders: conversion disorder, somatization or undifferentiated somatoform disorder, dissociative disorder not otherwise specified, and posttraumatic stress disorder. Psychiatric comorbidities, mostly depressive disorders, were frequent.
Subject(s)
Mental Disorders/psychology , Seizures/psychology , Somatoform Disorders/psychology , Adult , Brain/physiopathology , Comorbidity , Electroencephalography , Epilepsy/complications , Epilepsy/physiopathology , Female , Humans , Male , Mental Disorders/complications , Mental Disorders/physiopathology , Middle Aged , Seizures/etiology , Seizures/physiopathology , Sex Characteristics , Somatoform Disorders/complications , Somatoform Disorders/physiopathology , Video Recording , Young AdultABSTRACT
OBJECTIVE: Our purpose was to present and discuss the psychiatric diagnoses of patients who presented psychogenic non-epileptic seizures (PNES) during video-electroencephalographic monitoring (VEEG). METHODS: Out of 98 patients, a total of 28 patients presented PNES during the diagnostic procedure. In those cases in which the PNES that occurred during VEEG were validated by clinical history (clinical validation), and by showing the recorded event on video to an observer close to the patient (observer validation), was defined psychogenic non-epileptic seizure disorder (PNESD). Psychiatric diagnoses were made according to DSM-IV. RESULTS: In 27, psychogenic non-epileptic seizures disorder was diagnosed. Fourteen patients presented only with psychogenic non-epileptic seizure disorder, 13 with both psychogenic non-epileptic seizures disorder and epilepsy, and one patient with epilepsy only. Psychiatric diagnoses were: 17 (63%) patients with conversion disorder, five (19%) with somatization disorder, two (7%) with dissociative disorder NOS, two (7%) with post-traumatic stress disorder and one (4%) with undifferentiated somatoform disorder. CONCLUSIONS: Dissociative-conversion non-epileptic seizures are the most frequent finding, representing the pseudoneurological manifestation of mental disorders that have these symptoms as a common feature. Provisionally, they may be defined as dissociative-conversion non-epileptic seizure disorders.
Subject(s)
Mental Disorders/diagnosis , Mental Disorders/psychology , Seizures/drug therapy , Seizures/physiopathology , Adult , Conversion Disorder/diagnosis , Conversion Disorder/epidemiology , Conversion Disorder/psychology , Diagnostic and Statistical Manual of Mental Disorders , Dissociative Disorders/diagnosis , Dissociative Disorders/epidemiology , Dissociative Disorders/psychology , Electroencephalography , Female , Humans , Male , Mental Disorders/epidemiology , Middle Aged , Prevalence , Seizures/epidemiology , Severity of Illness Index , Videotape RecordingABSTRACT
Apesar dos avanços no diagnóstico das crises não epilépticas psicogênicas (CNEP), até o presente momento não há tratamentos que sejam padronizados e eficientes. O presente estudo examinou a freqüência de crises e as condições de trabalho e acadêmicas em um grupo de pacientes portadores de CNEP antes e depois de completarem um programa de oito semanas específico, desenvolvido no PROJEPSI (Projeto de Epilepsia e Psiquiatria) do Instituto de Psiquiatria do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, com os objetivos de redução da freqüência de crises e de danos associados ao diagnóstico de CNEP. Ao final do programa de tratamento, 15 pacientes (62,5 por cento) apresentavam-se em remissão e 19 (79,2 por cento) apresentaram melhora do desempenho profissional ou acadêmico. O presente estudo fornece evidências da eficácia do programa de atendimento dos pacientes portadores de CNEP proposto pelo PROJEPSI. O número significativo de pacientes que apresentam remissão e redução do número de crises após a comunicação terapêutica do diagnóstico, do tratamento das comorbidades psiquiátricas e da terapia para redução de danos e crises (TRDC) sugere que o conhecimento da doença por parte dos pacientes, familiares e amigos convidados é essencial ao tratamento.
In spite of the growing interest in psychogenic nonepileptic seizures (PNES), this diagnosis clearly lacks both standard protocols and efficient treatment. We analyzed seizure frequency, as well as, academic and working performances in a group of PNES patients, both prior and following a specific eight-week program developed at PROJEPSI (Epilepsy and Psychiatry Project) - Institute of Psychiatry, Hospital de Clinicas, School of Medicine, University of Sao Paulo. The program targeted seizure reduction and decrease in losses associated to PNES. Fifteen patients (62.5 percent) entered prolonged remission and 19 (79.2 percent) improved academic and professional performances. Our study shows evidence supporting the efficacy of the NES protocol proposed by PROJEPSI. The number of patients presenting with either remission or significant decrease on their seizures following the diagnosis presentation, psychiatric comorbidity treatment and specific therapy aiming to damage and crisis suggests that the knowledge of this condition by patients, family members and friends is key to successful treatment.
