Anorexia nervosa is restriction of energy intake relative to requirements, leading to a significantly low body weight in the context of age, sex, developmental trajectory, and physical health. It is accompanied by the intense fear of gaining weight or of becoming fat, or persistent behaviour that interferes with weight gain, even though at a significantly low weight.
In the binge-eating/purging type, the individual engages in recurrent episodes of binge eating or purging behaviour i.e., self-induced vomiting or the misuse of laxatives, diuretics, or enemas.
Individuals with bulimia nervosa exhibit recurrent episodes of binge eating, engage in inappropriate behaviour to avoid weight gain (e.g., self-induced vomiting), and are overly concerned with body shape and weight. However, unlike individuals with anorexia nervosa, binge-eating/purging type, individuals with bulimia nervosa maintain body weight at or above a minimally normal level.
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