3: Criteria for anorexia nervosa*

A.	Refusal to maintain body weight at or above a minimally normal weight for age and height, (eg, weight loss leading to maintenance of body weight less than 85% of that expected; or failure to make expected weight gain during period of growth, leading to body weight less than 85% of that expected).
B.	Intense fear of gaining weight or becoming fat, even though underweight.
C.	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 denial of the seriousness of the current low body weight.
D.	In postmenarcheal females, amenorrhoea; that is, absence of at least three consecutive menstrual cycles (a woman is considered to have amenorrhoea if her periods occur only following hormone, for example oestrogen, administration).

Specify type:

Restricting type
During the current episode of anorexia nervosa, the person has not regularly engaged in binge-eating or purging behaviour (ie, self-induced vomiting or the misuse of laxatives, diuretics, or enemas).

Binge-eating/purging type
During the current episode of anorexia nervosa, the person has regularly engaged in binge-eating or purging behaviour (ie, self-induced vomiting or the misuse of laxatives, diuretics or enemas).

*Taken from the fourth edition of the American Psychiatric Association Diagnostic and statistical manual of mental disorders.¹⁵