Although much more common in girls and women, anorexia nervosa also occurs in boys and men.
Excessive restriction of energy intake, which leads to a significantly low body weight in the context of age, gender, development, and health.
Intense fear of gaining weight or of becoming fat, or persistent behavior that interferes with weight gain
Disturbance in the way in which one's body weight or shape is experienced, undue influence of body weight or shape on self-evaluation, or persistent lack of recognition of the seriousness of the low body weight.
Severity of illness classified by "BODY MASS INDEX" (ie weight for height) at presentation
RESTRICTING TYPE - During the last three months the individual has NOT engaged in any episodes of binge eating or purging behavior. Weight loss is accomplished primarily through dieting, and/or excessive exercise.
BINGE/PURGE TYPE - During the last three months the individual HAS engaged in episodes of binge eating or purging behavior. Patients who binge may also purge through self-induced vomiting or the misuse of laxatives, diuretics, or enemas. Some individuals with this subtype do NOT binge eat but do regularly purge after the consumption of small amounts of food.