eating disorder anorexia nervosa 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. DOID:8689 ICD9CM:307.1 MSH:D000856 NCI:C34387 SNOMEDCT_2010_1_31:154926005 SNOMEDCT_2010_1_31:192445002 SNOMEDCT_2010_1_31:56882008 UMLS_CUI:C0003125 disease_ontology 307.1 MFOMD_0000072 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 F50.0 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) anorexia nerviosa