Should amenorrhoea be necessary for the diagnosis of anorexia nervosa? Evidence from a Canadian community sample

BACKGROUND

This study compares the characteristics of women with anorexia nervosa with those of women who have all the diagnostic features of that disorder except amenorrhoea.

METHOD

The study uses data from a large community epidemiological survey of the mental health status of household residents in Ontario, Canada. A multi-stage stratified sampling design generated a sample of 4285 females aged 15-64. DSM-III-R diagnoses were made using the Composite International Diagnostic interview.

RESULTS

Eighty-four out of 4285 female respondents met full or partial-syndrome criteria for anorexia nervosa. Comparison of these two groups revealed few statistically significant differences in terms of demographics, psychiatric comorbidity, family history or early experiences.

CONCLUSIONS

Amenorrhoea did not discriminate between women with anorexia nervosa and women with all the features except amenorrhoea across a number of relevant variables. The authors question the utility of amenorrhoea as a diagnostic criterion.

Psychiatric practice for the coming decade

OBJECTIVE

To identify important trends and themes that will affect psychiatric training and practice.

METHOD

Selective literature review and reflections by the authors.

RESULTS

Three principal themes are elucidated relating to empiricism and integration, accountability and collaboration, and training and the public trust.

CONCLUSIONS

There must be debate and action on these and other themes to maintain the relevance of psychiatry to its changing context.

The hormonal response to intravenous 5-hydroxytryptophan in bulimia nervosa

In recent years evidence has accumulated to implicate a disturbance in serotonin function in the eating disorder bulimia nervosa. This study employs a neuroendocrine technique to assess the effect of intravenous 5-hydroxytryptophan, the immediate precursor to serotonin, on peripheral hormones in bulimia nervosa subjects and controls. Blunted prolactin and growth hormone responses were observed among bulimia nervosa subjects; the possible pathophysiology and implications of the findings are discussed.

Views on classification and diagnosis of eating disorders

OBJECTIVE

To highlight developments in the taxonomy of eating disorders since Russell's original description of bulimia nervosa (BN) in 1979 and through 3 versions of the Diagnostic and Statistical Manual.

METHOD

Criteria for anorexia nervosa (AN), BN and binge eating disorder (BED) are systematically described.

RESULTS

While criteria for AN remain largely unchanged between DSM-III-R and DSM-IV, the subclassification of binge/purge and restricter subgroups endorses previous research findings. For BN, the definition of "binge" has occupied considerable attention both in quantitative and qualitative terms. The arbitrary choice of 2 episodes per week as a minimum frequency is also discussed in light of recent data from the Ontario Health Supplement. A third eating disorder, BED, is now included in the appendix of DSM-IV under Eating Disorders--Not Otherwise Specified category. The potential overlap between this disorder and nonpurging BN is discussed. Finally, the relationship between eating disorders and other psychiatric disorders including depression, schizophrenia, obsessional, and conversion disorders is considered as well as the continuum from preoccupation with weight to eating disorder.

CONCLUSION

While significant advances have been made in understanding and classifying eating disorders during the past 15 years, further empirical work is necessary to clarify areas of uncertainty.

The relationship of partial syndrome eating disorders to anorexia nervosa and bulimia nervosa

A variety of sociocultural, familial and individual features associated with the eating disorders were examined in subjects with full syndrome (FS) and partial syndrome (PS) eating disorders and in normal high school students. The EAT-26 was administered to 995 high school students. This was followed by individual interviews with those who scored in the symptomatic range. Fifty-one students with PS eating disorders, 57 students without eating disorders (normal controls) and 30 hospital patients with FS, anorexia nervosa or bulimia nervosa were compared on subscales of the Eating Disorder Inventory, the Diagnostic Survey for Eating Disorders and the Beck Depression Inventory. The three groups displayed statistically significant differences on dimensions of EDI subscales Ineffectiveness and Interoceptive Awareness and also with respect to depression, history of being overweight and past history of emotional problems, as well as having mothers with medical illnesses. On these characteristics, the FS subjects displayed higher levels than the PS subjects, who in turn were higher than the NC subjects. The PS subjects displayed elevations on Body Dissatisfaction (EDI subscale), past medical illnesses, and mother's over-concern with eating and weight. These data support a continuum model of the eating disorders, but a continuum of multiple associated features rather than of dieting.

Bulimia nervosa in a Canadian community sample: prevalence and comparison of subgroups

OBJECTIVE

Previous epidemiological studies of bulimia nervosa have generated differing estimates of the incidence and prevalence of the disorder. These differences are attributable, in part, to varying definitions of the illness and a range of methodologies. The authors sought to define the prevalence of bulimia nervosa in a nonclinical community sample, examine the clinical significance of DSM-III-R threshold criteria, and examine comorbidity.

METHOD

Subjects across Ontario (N = 8,116) were assessed with a structured interview, the World Health Organization Composite International Diagnostic Interview, with specific questions added for bulimia nervosa. Subjects who met DSM-III-R criteria for bulimia nervosa were compared with those who were missing only the frequency criterion (two or more binge-eating episodes per week for 3 months).

RESULTS

In this sample, the lifetime prevalence of bulimia nervosa was 1.1% for female subjects and 0.1% for male subjects. The subjects with full- and partial-syndrome bulimia nervosa showed significant vulnerability for mood and anxiety disorders. Lifetime rates of alcohol dependence were high in the full-syndrome group. Rates of parental psychopathologies were high in both bulimic groups but tended to be higher in the subjects with full-syndrome bulimia nervosa. Both bulimic groups were significantly more likely to experience childhood sexual abuse than a normal female comparison group.

CONCLUSIONS

This study confirms other prevalence estimates of bulimia nervosa and its comorbid diagnoses from studies that were based on sound methodologies. It also points to the arbitrary aspects of the frequency of binge eating as a diagnostic threshold criterion for the disorder.

Family interactions in bulimia nervosa. II: Complex intrafamily comparisons and clinical significance

This paper extends the analyses performed in part one to the area of complex intrafamily comparisons. Ratings by patients are consistently elevated compared to ratings by parents on all scales of the Family Assessment Measure (FAM), and there are significant interaction effects, which, when examined, suggest that patient scores improve while parental scores are relatively unchanged over the course of treatment in a day hospital. The clinical implications of these findings are discussed, and we attempt to clarify the role of the family therapist in the treatment of bulimia nervosa.

Family interactions in bulimia nervosa. I: Study design, comparisons to established population norms, and changes over the course of an intensive day hospital treatment program

This paper presents the results of a study examining self-reported family functioning by patients with bulimia nervosa (BN) and their parents before and after treatment for the eating symptoms of BN. Ratings of family functioning improved significantly over the course of treatment. There was no evidence of excessive denial or social desirability in the families.

Depression in anorexia nervosa and bulimia nervosa: discriminating depressive symptoms and episodes

In a clinical sample of 198 female patients with anorexia nervosa (N = 83) and bulimia nervosa (N = 115), 43% met criteria for major depression using the Structured Clinical Interview for DSMIII-R. This group had a mean score of 30.9 +/- 8.7 on the Beck Depression Inventory (BDI) which was significantly higher than the BDI mean score of 20.5 +/- 8.9 among the remainder of the sample (p < 0.0001). A score of 26 yielded the highest levels of sensitivity and specificity, while five items from the BDI (loss of satisfaction, discouragement, weight loss, suicidal ideation and decision-making) correctly classified approximately 80% of subjects into "depression-positive" or "depression-negative" categories. Detection of co-morbid depression in patients with eating disorders may have practical implications for treatment.

Bulimia nervosa : a review of therapy research

Since the delineation of bulimia nervosa as a distinct syndrome in 1979, a variety of etiological models and related treatments have evolved. Methodological advances in evaluation have been reflected in recent outcome studies. There is now extensive evidence for the effectiveness of various short-term psychotherapies for bulimia nervosa. However, there is no convincing support for the specificity of any one form; all have a salubrious effect. Cognitive-behavioral therapy has been the most extensively researched. A parallel literature examines antidepressant pharmacotherapy for this disorder, and there are recent studies of comparative and integrative aspects of drug therapy and psychotherapy. Issues related to the long-term outcome of short-term interventions, predictors of response, and mechanisms of change await elucidation.

Advances in diagnosis and treatment of anorexia nervosa and bulimia nervosa

This paper reviews four areas of research into anorexia nervosa (AN) and bulimia nervosa (BN). First, in terms of diagnosis, the psychological concerns about weight and shape are now addressed in BN, bringing it more in line with the related disorder, anorexia nervosa. Second, studies of psychiatric comorbidity confirm the overlap between eating disorders and depression, obsessive compulsive disorder, substance abuse, and personality disorder. Nevertheless, there are reasons to accept the distinct qualities of each syndrome, and eating disorders are not merely a variant of these other conditions. Third, treatment advances in BN involve mainly cognitive-behavioural or interpersonal psychotherapies and pharmacotherapies primarily with antidepressants. The effect of combining more than one approach is beginning to be addressed. Finally, outcome studies involving people with both AN and BN have shown that the disorders "cross over" and that both conditions have a high rate of relapse. A renewed interest in the treatment of AN is needed.

Social desirability and irritable bowel syndrome

The Marlowe-Crowne Social Desirability Scale, a 33-item self-report questionnaire, was administered to an age-matched sample of twenty-five irritable bowel syndrome (IBS) patients, twenty-four psychiatric patients meeting a diagnosis of major depression, and nineteen controls. As predicted, planned comparisons analysis showed a significant group effect: IBS group scores were significantly higher than both depressed and control group scores (p less than .05). Implications of this social desirability response set for the psychological assessment and treatment of IBS are discussed.

Neurasthenia and chronic fatigue syndrome: the role of culture in the making of a diagnosis

Chronic fatigue syndrome is an increasingly popular diagnosis consisting of multiple psychiatric and somatic symptoms. It bears a striking resemblance to the nineteenth-century diagnosis of neurasthenia. Both disorders arose during periods characterized by a preoccupation with commerce and material success and major changes in the role of women. They illustrate the role of culture in the development of a new diagnosis that emphasizes a "medical" rather than "psychiatric" etiology. The authors argue that chronic fatigue syndrome will meet the same fate as neurasthenia--a decline in social value as it is demonstrated that the majority of its sufferers are experiencing primary psychiatric disorders or psychophysiological reactions and that the disorder is often a culturally sanctioned form of illness behavior.

Pineal and adrenal function before and after refeeding in anorexia nervosa

Nine female subjects with anorexia nervosa (AN) were studied when emaciated (mean 72% of average body weight), and after refeeding (mean 85% of average body weight). They were compared to 9 individually age-matched female control subjects. On each occasion blood was sampled for serum melatonin and plasma cortisol through the night, and urine was collected over 24 hr to measure sulfatoxy melatonin levels. The AN group did not differ in their level of depression before and after weight gain. There were no significant differences in serum melatonin values among the patient group before or after weight gain and the control group. Levels of urinary sulfatoxy melatonin were also significantly higher in nighttime compared to daytime samples both before and after weight gain. Plasma cortisol values were significantly elevated in the emaciated state and this was accounted for by higher cortisol levels at 9, 10, 11, and 12 PM and at 6 AM compared with the weight restored state and to controls. This study suggests that pineal activity in patients with AN is not altered by chronic changes in weight, and is not closely associated with changes in cortisol.

Psychopharmacology training in psychiatric residency programs: the Canadian scene

A survey among psychiatric residents about their satisfaction with and concerns about their training in psychopharmacology was conducted. One hundred and seventy responders (61%) from ten post-graduate psychiatric programs in Canada completed the questionnaire. The questionnaire assessed the residents' satisfaction with the training they had received over the previous six months as well as over their entire residency period. The questionnaire inquired specifically about the quantity and quality of supervision in the use of different medications for different therapeutic purposes. It also looked at the quality of supervision of drug therapies within hospital services, inpatient, outpatient, consultation and emergency services. Residents also were asked about coverage of specific topics and ranked different methods of learning. The survey uncovered a number of deficiencies mostly related to the teaching of basic psychopharmacology, integration of psychopharmacological and psychosocial issues and the lack of teaching of clinical appraisal of recent advances. Factors that may have contributed to the development of such deficiencies as well as specific recommendations are discussed.

Chronic fatigue syndrome and depression: cause, effect, or covariate

Depressed mood and the psychiatric diagnosis of major depressive episode (MDE) are common findings in patients with chronic fatigue syndrome (CFS). The relationship between depression and CFS is unclear and may be explained by one of four models: (1) CFS is an atypical manifestation of MDE; (2) depression is the result of CFS as either an organic mood syndrome or an adjustment reaction; (3) CFS and MDE are covariates; and (4) the diagnosis of MDE is artifactual. The evidence for these models is discussed. The potentially confounding effect of depression on tests of immune function and neuropsychological testing is described. The implications of these different models for the design of studies of CFS are examined.

The serotonin hypothesis of bulimia nervosa: theory and evidence

Bulimia nervosa is an eating disorder with multiple causes that has been the object of extensive research since it was first described in 1979. This review evaluates both the theoretical rationale and empirical evidence for a model which suggests that disturbed serotonin activity is involved in the development of this disorder. Limitations of the hypothesis and prospects for the future are considered.

Chronic fatigue syndrome and the psychiatrist

The number of patients who are identified as having chronic fatigue syndrome (CFS) has increased, and as a result, chronic fatigue syndrome has received widespread attention. Research has demonstrated that cognitive, affective and behavioural symptoms are prominent in CFS. Psychiatrists are therefore being asked to participate in the assessment and management of patients with this syndrome. This paper will provide an overview of the clinical characteristics of CFS and the current empirical findings related to its pathology, and will conclude with a discussion of the management of these patients.

The empathic process and its mediators. A heuristic model

Clinical empathy research has been plagued with conceptual and methodological difficulties. This paper describes a model of the empathic process that enables clinicians, teachers, and researchers to examine specific components of the model and to determine the influence of particular mediators on the empathic process. Empathy is conceptualized as a three-phase time-sequenced process rather than as a multidimensional or multicomponent phenomenon. Stripped of detail, the empathic process reveals an inducement phase, a matching phase, and a participatory-helping phase. By examining these phases, it becomes possible to distinguish empathy from closely related concepts such as sympathy. Each of the phases reveals numerous mediating variables that influence the outcome of the phase, i.e., whether the process of empathy continues or an alternate terminal point is reached. Many of these mediators are derived from existing conceptual and empirical work on empathy. Particular attention is paid to situational or contextual mediators of empathy. Contextual mediators have only recently been acknowledged as an important variable in the empathic process. For clinicians, identification of contextual variables that may be responsive to intervention is a critical step in the modification of the clinical environment. We would suggest that clinical empathy research is largely the study of these mediating influences and should be recognized as such.

Sulphatoxy melatonin: an index of depression in anorexia nervosa and bulimia nervosa

Urinary excretion of the principal melatonin metabolite, sulphatoxy melatonin (aMT6s), was assessed both during the day and during the night in 38 female eating disorder patients (anorexia nervosa, n = 17; bulimia nervosa, n = 12; anorexia nervosa + bulimia nervosa, n = 9) and 14 female control subjects. Correlations between nocturnal serum melatonin and urinary aMT6s were also obtained. All patient groups and the controls showed a preservation of diurnal rhythm with elevated nocturnal urinary aMT6s values and no significant difference in amplitude between groups. However, patients with concurrent major depression had significantly lower levels of daytime and nighttime urinary aMT6s than the nondepressed group. Weight did not influence these findings. Correlations between nocturnal serum melatonin levels and urinary aMT6s were high for control subjects (r = 0.77) and moderate for the patient groups (r = 0.31). This may reflect differences in the rate of excretion of melatonin between patients and controls.