Riley is currently significantly underweight. On average, sh…

Riley is currently significantly underweight. On average, she eats fewer than 1000 calories per day. This is not only because she has a general lack of interest in food, but also because there are numerous food groups that she had cut out of her diet because she refuses to eat foods of certain colors or textures. Her doctor is concerned about her low weight status and severe nutritional deficiency. Riley has never had any other symptoms of abnormal behavior. What disorder does she have?