Disorder characterised by a refusal to maintain a minimally normal body weight, the individual is intensely afraid of gaining weight, and exhibits a significant disturbance in the perception of the shape or size of his or her body. DSM-IV-TR (american Psychiatric Association) An eating disorder characterized by refusal to maintain a healthy body weight, and an obsessive fear of gaining weight due to a distorted self image. People with anorexia see themselves as overweight even though they are dangerously thin. The process of eating becomes an obsession to them. Unusual eating habits develop, such as avoiding what they perceive as high caloric food and meals, picking out a few foods and eating only these in small quantities, or carefully weighing and portioning food. People with anorexia may repeatedly check their body weight and many engage in other techniques to control their weight, such as intense and compulsive exercise or purging by means of vomiting and abuse of laxatives, enemas, and diuretics. http://www.psychologytoday.com/conditions/anorexia-nervosa

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http://purl.obolibrary.org/obo/DOID_8670