Table of Contents

F50 : Anorexia Bulimia

F50.0 Anorexia nervosa (AN)

A. There is weight loss or, in children, a lack of weight gain, leading to a body weight of at least 15 % below the normal or expected weight for age and height

B. The weight loss is self-induced by avoidance of 'fattening foods'

C. There is self-perception of being too fat, with an intrusive fear of fatness, which leads to a self-imposed low weight threshold

D. A widespread endocrine disorder involving the hypothalamic-pituitary-gonadal axis is manifest in women as amenorrhoea, and in men as a loss of sexual interest and potency

E. The disorder does not meet criteria A and B for bulimia nervosa

F50.1 Bulimia nervosa (BN)

A. There are recurrent episodes of overeating (at least twice a week over a period of 3 months) in which large amounts of food are consumed in short periods of time

B. There is persistent preoccupation with eating, and a strong desire or a sense of compulsion to eat

C. The patient attempts to counteract the 'fattening' effects of food by one or more of the following:

  • self-induced vomiting
  • self-induced purging
  • alternating periods of starvation
  • use of drugs such as appetite suppressants, thyroid preparations or diuretics

D. There is self-perception of being too fat, with an intrusive dread of fatness (usually leading to underweight)