Atypical anorexia nervosa is an eating disorder in which individuals meet all the qualifications for anorexia nervosa, including a body image disturbance and a history of restrictive eating and weight loss, except that they are not currently underweight.[1] Atypical anorexia qualifies as a mental health disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), under the category Other Specified Feeding and Eating Disorders (OSFED).[2] The characteristics of people with atypical anorexia generally do not differ significantly from anorexia nervosa patients except for their current weight.[3]
Atypical anorexia was not described in earlier editions of the DSM, which included a requirement that person to have a body weight no higher than 85% of normal.[4] Patients with atypical anorexia were diagnosed with the DSM-4 qualification "eating disorder not otherwise specified" (EDNOS) until the DSM-5 was released in 2013.[4] Prior to DSM-5, EDNOS made up the majority of eating disorders diagnoses, making it difficult to estimate the prevalence of atypical anorexia during this period.[4] The term atypical anorexia was historically used to describe the restrictive eating habits of some people with autism. The DSM-5 superseded this term with the avoidant restrictive food intake disorder (ARFID) diagnosis.[4]
^"Anorexia Nervosa: What It Is, Symptoms, Diagnosis & Treatment". Cleveland Clinic. Retrieved 2022-03-23.
^Thomas, Jennifer J.; Vartanian, Lenny R.; Brownell, Kelly D. (2009). "The relationship between eating disorder not otherwise specified (EDNOS) and officially recognized eating disorders: Meta-analysis and implications for DSM". Psychological Bulletin. 135 (3): 407–433. doi:10.1037/a0015326. ISSN 1939-1455. PMC 2847852. PMID 19379023.
^ abcdMoskowitz, Lindsay; Weiselberg, Eric (2017-04-01). "Anorexia Nervosa/Atypical Anorexia Nervosa". Current Problems in Pediatric and Adolescent Health Care. 47 (4): 70–84. doi:10.1016/j.cppeds.2017.02.003. ISSN 1538-5442. PMID 28532965.
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