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[Organic versus functional factors in the diagnosis of conversion disorders (author's transl)].

Conversion symptoms involving conspicous pseudoneurological signs of the motor system are very seldom today. To differentiate in these cases between organic and functional disturbances is highly difficult. Two patients are described. A 25 year old soldier with the symptomatology of a repetitive transverse lesion of the spinal cord and a 70 year old pensioner with a blepharospasm. They both showed an accompanying depression. Diagnostic criteria, psychodynamic models and especially the organic background of conversion symptoms are discussed.

Adult↗

Visual conversion disorder: a case analysis of the influence of visual information.

We examined the influence of visual information on a decision task that was administered to an individual with monocular visual conversion disorder. Findings indicated that his performance was influenced by the visual information and by motivation instructions. The findings are discussed in terms of a model of hysterical blindness that recognizes the interplay of cognitive and motivational processes.

Adult↗

The differentiation of vomiting/weight loss as a conversion disorder from anorexia nervosa.

The authors studied patients with weight loss and vomiting, distinguishing by means of objective criteria those who had what they feel is a conversion disorder from those with anorexia nervosa. The group of patients with conversion disorder were quite different from those with anorexia nervosa and could be considered as suffering from less pervasive psychological deficits. Medical and psychotherapeutic intervention must take into account the differences between these two groups for treatment to achieve maximal benefit.

Anorexia Nervosa↗

Emergency room management of conversion disorders.

The authors present guidelines for diagnosing and managing conversion disorders in an emergency room setting. Assessment of the patient must be based on a careful physical and psychiatric evaluation that will identify any underlying physical illness or concurrent psychopathology. An accurate assessment is also vital to the clinician's decision about whether to use simple supportive interventions, to refer or hospitalize the patient, or to try to uncover the conflicts generating the conversion symptoms. If there are no contraindications to uncovering the conflicts, such as chronic symptomatology or a pathological family network, the clinician may use such techniques as hypnosis or a sodium amytal interview.

Adult↗

Behavioural treatment of a food refusal conversion disorder in a mentally retarded adult.

A 31-year-old woman with mental retardation who demonstrated total food refusal as the symptom of a conversion disorder was successfully treated with behavioural management techniques. The treatment utilized a shaping paradigm combined with relaxation procedures. The results supported the hypothesis that conversion disorder symptoms are maintained through their consequences, and the efficacy of behavioural treatments for those disorders.

Adult↗

Conversion disorder following termination of pregnancy.

A variety of psychologic disorders may present as physical complaints without organic basis. As characterized by Sydenham over 300 years ago, such disorders "mimic all the physical disease to which man is heir." The case here presents the evolution of a conversion disorder (urinary retention) in response to a decision to terminate pregnancy. The predominant disturbance in a conversion disorder is an involuntary loss or alteration in somatic function that is temporally related with an environmental stressor. Conversion, as a defense mechanism, provides primary gain by keeping the conflict from the patient's awareness and secondary gains by generating environmental support and avoidance of undesired activities. Awareness of a patient's current life events, past responses to stress, and support systems is essential in order to recognize and manage this array of physical complaints of functional origin.

Abortion, Induced↗

A randomised controlled clinical trial on the additional effect of hypnosis in a comprehensive treatment programme for in-patients with conversion disorder of the motor type.

BACKGROUND: The primary aim of this study was threefold: (1) to examine the additional effects of hypnosis aimed at symptom reduction, using symptom-oriented and expression- and insight-oriented techniques in a comprehensive clinical treatment programme for in-patients with a persistent conversion disorder of the motor type; (2) to assess whether the level of hypnotisability was predictive of treatment outcome, and (3) to explore the efficacy of the total clinical treatment programme. METHODS: The study population consisted of 45 in-patients between 18 and 65 years of age meeting the DSM-III-R criteria for conversion disorder of the motor type or somatisation disorder with motor conversion symptoms. A randomised controlled clinical trial was undertaken. The primary outcome measures were the Video Rating Scale for Motor Conversion Symptoms, the D(isabilities) code items from the International Classification of Impairments, Disabilities and Handicaps and the Symptom Checklist-90. Measures of the credibility of treatment and patient expectations of treatment outcome were used as manipulation checks. Hypnotisability was measured using the Stanford Hypnotic Clinical Scale. RESULTS: Significant treatment results for all outcome measures were found for the total sample. These effects proved to be clinically significant. The use of hypnosis had no additional effect on treatment outcome. Hypnotisability was not predictive of treatment outcome. CONCLUSION: A comprehensive treatment programme, either with or without hypnosis, can be worthwhile for patients with long-standing conversion symptoms.

Adolescent↗

Differential diagnosis and treatment of conversion disorder and Guillain-Barre syndrome.

Three cases are presented which illustrate the possible difficulties in differentiating between the diagnoses of Guillain-Barre Syndrome and conversion disorder. Accepted criteria are specified for each condition, as well as some associated features often characteristic of similar cases. Supportive interdisciplinary treatment for Guillain-Barre Syndrome is reviewed, and an interdisciplinary multi-modal approach to treatment of conversion disorder is described.

Adolescent↗

Clinical characteristics of patients with motor disability due to conversion disorder: a prospective control group study.

OBJECTIVES: Previous studies have suggested associations between conversion and many different clinical characteristics. This study investigates these findings in a prospective design including a control group. METHODS: Thirty consecutive patients with a recent onset of motor disability due to a conversion disorder were compared with a control group of patients with corresponding motor symptoms due to a definite organic lesion. Both groups had a similar duration of symptoms and a comparable age and sex profile and were assessed on a prospective basis. Background information about previous somatic and psychiatric disease was collected and all patients were assessed by means of a structured clinical interview linked to the diagnostic system DSM III-R, the Hamilton rating depression scale, and a special life events inventory. RESULTS: The conversion group had a higher degree of psychopathology with 33% of the patients fulfilling the criteria for psychiatric syndromes according to DSM-III-R axis I, whereas 50% had axis II personality disorders compared with 10% and 17% respectively in the control group. Conversion patients also had significantly higher scores according to the Hamilton rating depression scale. Although patients with known neurological disease were not included in the conversion group, a concomitant somatic disorder was found in 33% of the patients and 50% complained of benign pain. The educational background in conversion patients was poor with only 13% having dropped out of high school compared with 67% in the control group. Self reported global assessment of functioning according to the axis V on DSM IV was significantly lower in conversion patients, who also registered significantly more negative life events before the onset of symptoms than controls. Logistic regression analysis showed that low education, presence of a personality disorder, and high Hamilton depression score were significantly associated with conversion disorder. CONCLUSION: The importance of several previously reported predisposing and precipitating factors in conversion disorder is confirmed. The results support the notion that conversion should be treated as a symptom rather than a diagnosis and that efforts should be made in diagnosing and treating possible underlying somatic and psychiatric conditions.

Adult↗

Conversion disorders in childhood: a retrospective follow-up study of 84 inpatients.

The medical histories of 84 children who had been diagnosed as having conversion disorder were reviewed in a follow-up study, and the validity of this diagnosis was examined. The female:male ratio was 2.1:1, although below the age of 10 the ratio was almost equal. The medical histories of 62 per cent of the patients showed an organic illness, and 51 per cent had various slight to moderate EEG disturbances. The validity of the diagnosis was very high: only five were found to have organic disease during the follow-up period. Children with symptoms of conversion disorder should receive appropriate medical investigations, but the authors question whether extensive investigations could not be replaced by screening tests, combined with early psychiatric intervention.

Adolescent↗

Conversion disorder and multiple chemical sensitivity: a comparative study of psychological defense strategies.

This study compared psychological defensive strategies in two groups of patients with multiple chemical sensitivity (n = 10) and conversion disorder (n = 10) by means of the projective perceptual Defense Mechanism Test. We attempted to create a model for personality assessment based on the test data of prior patients, in which new patients could successively be tested. The overall results indicated that it was possible to separate the clinical groups significantly from a control group and from each other. In comparison to the controls, the clinical groups were characterized by patterns that were more nonemotionally adapted as well by a lateness of perception, but the ways in which the clinical groups maintained this difference were not the same. The multiple chemical sensitivity group was characterized above all by blocking maneuvers, while the main defensive strategy of the conversion disorder group was distortion of content.

Adult↗

Illness behavior in the acute phase of motor disability in neurological disease and in conversion disorder: a comparative study.

Sixty patients with a sudden onset of motor disability were assessed for illness behavior and depression. In 30 of the patients, etiology was attributed to a definite structural lesion. The remaining 30 patients were diagnosed as having conversion disorder. The Illness Behaviour Questionnaire (IBQ) and the Hamilton Rating Depression Scale (HRDS) were used as instruments for assessment. The mean HRDS score was significantly higher in the conversion group, indicating a higher degree of affective disease in these patients. According to the results of the IBQ, the patients with conversion disorder showed a higher degree of irritability, disease conviction, and phobic preoccupation, and also, to a greater extent, rejected psychological explanations for their symptoms. Denial was high in both patient groups, coexisting with affective symptoms in the conversion patients but not in the neurological patients. Although valuable information could be extracted from the IBQ, it was not found to be a reliable instrument for distinguishing between psychogenic and organic causes of motor disability.

Acute Disease↗

Conversion disorders in adolescents: a practical approach to rehabilitation.

Young people with conversion disorders require a different treatment approach compared with those who have organic illness. This paper describes a team approach which is based on detailed assessment, explanation of the vicious cycle, accepting the patient's symptoms, working towards achievable goals, encouraging bravery, rewarding 'wellness' behaviour, ignoring abnormal behaviour and supervising re-integration into school.

Adolescent↗

A case of bilateral ptosis with unsteady gait: suggestibility and culture in conversion disorder.

We report a case of a 14-year-old girl who presented, following a sudden onset, with bilateral ptosis, gait disturbance, difficulty swallowing and loss of appetite, right hypochondriacal pain, and frontal headache. Protracted neurological and medical examinations were unremarkable; neither was precipitating psychological stresses evident. The condition, which manifest as typical conversion disorder, lasted for one year. "Treatment" involving electrical stimulation of both eyes muscles and legs with positive reassurance resolved the symptom. This case supports the view that conversion disorder, not only involves a strong element of suggestion, but also incorporates socio-cultural sanctioned prescription.

Adolescent↗

Conversion disorders in childhood and adolescence: a psychiatric consultation study in a general hospital.

From March 1986 to April 1995, 418 consecutive psychiatric consultations for patients aged 18 or below were completed. Ten of these patients met the Diagnostic and Statistical Manual of Mental Disorders, 4th. edition (DSM-IV) diagnostic criteria for a conversion disorder. The medical and psychiatric consultation records of these patients were reviewed. Chief conversion symptoms included pseudoseizure (four cases), gait disturbance (two cases), abnormal movement (one case), four limbs weakness (one case), aphonia (one case) and tunnel vision (one case). The psychosocial problems of the patients included family problems (seven cases), interpersonal problems (two case) and concurrent physical illness (one case). Six patients (60%) manifested complete remission and others showed improvement of the symptoms.

Adolescent↗

Lower extremity paralysis after operative laparoscopy from conversion disorder. A case report.

BACKGROUND: Neurologic complications are rarely associated with laparoscopic procedures, and most nerve injuries are transient palsies. We present the first case of paraplegia following gynecologic laparoscopy. CASE: A 34-year-old woman, gravida 2, para 0-1-1-0, with long-standing infertility, underwent an uncomplicated laparoscopic ovarian cystectomy for a persistent ovarian cystadenoma. In the immediate postoperative period, the patient developed bilateral lower extremity paralysis. She regained her sensorimotor function in one extremity within hours, while both motor and sensory functions, but not proprioception, were deficient in the other extremity in a pattern of distribution that was inconsistent and paradoxical. Diagnostic studies to evaluate the patient's central and peripheral nervous systems and evoked sensory potentials were all normal. The patient's indifference to her persistent yet paradoxical neurologic deficits was a clue to her diagnosis. In the absence of an organic lesion to account for the patient's symptoms, the diagnosis of conversion disorder was made. CONCLUSION: Neurologic complications following laparoscopy are rare, generally involving nerve palsies from local injury. This is the first report of lower extremity paralysis after laparoscopy. Although conversion disorder is rare, it may occur in the gynecologic setting owing to its prevalence in women and especially in the presence of underlying affective disorders.

Adult↗

Outcome in conversion disorder: a follow up study.

Fifty six patients who had been admitted with a conversion disorder other than pseudoseizures were interviewed; mostly by telephone. The median interval was 4.5 years. If a patient had improved during a stay in hospital the eventual outcome was good in 96%, against only 30% in the others (risk ratio 3.2 (95% CI 1.8-5.6)). Rapid improvement was, in turn, related to recent onset of the symptoms. Two patients (4%) subsequently developed an organic deficit that, in retrospect, might be related to the initial episode.

Adolescent↗