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This item focuses on a eating disturbance where people avoid or restrict foods for reasons other than concerns about weight or shape, leading to nutritional deficiency. The appropriate diagnosis is Avoidant/Restrictive Food Intake Disorder, which involves a persistent failure to meet appropriate nutritional and energy needs due to avoidance or restriction of food intake not driven by body image concerns. It can arise from sensory sensitivities, fear of aversive consequences, or simply a lack of interest in eating, and it may result in weight loss, nutritional deficiencies, dependence on supplements or enteral nutrition, and psychosocial impairment. This pattern is distinct from anorexia nervosa, where the primary driver is fear of gaining weight and body image disturbance, and from binge-eating disorder, which centers on recurrent binge episodes with distress but without ongoing restrictive eating linked to nutritional deficiency. Insomnia disorder is not related to eating behavior.