21_Anorexia Nervosa Anorexia Nervosa Both anorexia and bulimia are characterized by a morbid fear of gaining weight and losing control over eating. A major difference seems to be that anorexics are more successful at losing weight. Hence, people with anorexia are proud of both their diets and their extraordinary control. Marya Hornbacher, for example, in her autobiography ‘Wasted’, writes: “I distinctly did not want to be seen as bulimic. I wanted to be an anorectic, a person whose passions were ascetic rather than hedonistic.” Characteristics of Anorexia Nervosa Anorexia nervosa is less common than bulimia Anorexia is more likely to be the primary diagnosis than bulimia nervosa Anorexics have an intense fear of obesity and relentlessly pursue thinness The disorder commonly begins in adolescence Weight loss is achieved via stringent calorific restriction, purging, exercise, or a combination thereof The DSM-IV-TR specifies two types of anorexic: Restricting type: limit calorie intake Binge-eating-purging type: will eat smaller amounts of food than a bulimic, and purges more often, sometimes after every time she eats Medical Consequences of Anorexia Anorexia can have a profound impact on health; up to 20% of anorexics eventually die of their disorder (Keel et al, 2003; Sullivan, 1995). Typical examples of damage to health might be: Cessation of menstruation (amenorrhea) Dry skin Brittle hair or nails Sensitivity or intolerance to cold temperatures 21_Anorexia Nervosa Development of lanugo; downy hair on limbs and cheeks Cardiovascular problems: chronically low blood pressure and heart rate In anorexics who also purge, electrolyte imbalance and associated renal and cardiac problems will be found Treatment of Anorexia Nervosa The initial aim is to restore the client’s weight to within normal BMI range (American Psychiatric Association, 1993). Residential treatment is indicated if the client’s weight is below 70% of the average, because severe medical complications are likely to occur if weight is not stabilized quickly. Maintaining weight gain is problematic, as without attention to the patient’s underlying dysfunctional attitudes about body shape as well as interpersonal disruptions in her life, she will almost always relapse. Family therapy has been found to be effective, especially with girls under age of 19 who have a short history of being anorexic (Eisler et al., 1997). The aims of family therapy are: to discuss attitudes towards body shape and image distortion; examine and modify negative and dysfunctional communication regarding food; ensure that meals are structured and reinforcing. Strategies to achieve weight gain This model (Hsu, 1990) for the attainment of weight gain is only suitable for in-patient treatment: Weight restoration in conjunction with individual and family therapy Development of trust between patient and treatment team, so that patient believes she won’t be allowed to become overweight Patient’s fear of loss of control is contained; to this end, four to six small meals (400-500 calories each) per day is helpful Presence of a nurse at mealtimes to encourage patient to eat, and discuss patient’s fears and anxieties around doing so Patient to be weighed regularly and informed of weight gain or loss Negative and positive reinforcements, such as a graduated level of activity and bed-rest 21_Anorexia Nervosa Patient’s self-defeating behaviour, i.e. secret purging or vomiting, is challenged and controlled Dysfunctional conflict between patient and family about food should not be re-enacted by treatment team