Atypical anorexia nervosa

Atypical anorexia nervosa, abbreviated AAN, is an eating disorder in which a person meets every criterion for anorexia nervosa, including a disturbed body image and a history of restrictive eating and weight loss, except that they are not currently underweight. It qualifies as a mental health disorder in the DSM-5 under Other Specified Feeding and Eating Disorders, and before the DSM-5 appeared in 2013 such patients were diagnosed with eating disorder not otherwise specified. People with the condition generally do not differ greatly from those with anorexia nervosa apart from their current weight. The term was once used for the restrictive eating of some autistic people, a use the avoidant or restrictive food intake disorder diagnosis replaced. Some researchers criticise the name, and ICD-11 and earlier editions still group it under unspecified disorders.