Avoidant/restrictive food intake disorder (ARFID) is a new eating disorder diagnosis in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), published in 2013, and signifies one of the most substantial revisions to the Feeding and Eating Disorders section. It is characterized by avoidance or restriction of food leading to one or more of the following: (a) weight loss or lack of expected gain during a period of growth, (b) nutritional deficiencies, (c) reliance on [Page 408]oral or enteral nutritional supplementation, and (d) psychosocial dysfunction. Notably, unlike anorexia nervosa and related disorders, there is no disturbance in the way in which one’s weight or shape is experienced. The avoidance or restriction of food cannot be fully explained by another medical condition or mental ...