What is the difference between anorexia nervosa and bulimia?
Both anorexia nervosa and bulimia are characterized by an overvalued drive for thinness and a disturbance in eating behavior. The main difference between diagnoses is that anorexia nervosa is a syndrome of self-starvation involving significant weight loss of 15 percent or more of ideal body weight, whereas patient with bulimia nervosa are, by definition, at normal weight or above. Bulimia is characterized by a cycle of dieting, binge-eating and compensatory purging behavior to prevent weight gain. Purging behavior includes vomiting, diuretic or laxative abuse. When underweight individuals with anorexia nervosa also engage in bingeing and purging behavior the diagnosis of anorexia nervosa supercedes that of bulimia.
