A 17-Year-Old Girl Is Brought to the Physician for a Well-Child

A 17-year-old girl is brought to the physician for a well-child examination. She is worried about gaining weight. She frequents buffet restaurants but feels guilty soon after. Her last menstrual period was 3 weeks ago. She attends high school and plays field hockey on the school team. She is at the 25th percentile for height, 12th percentile for weight, and 17th percentile for BMI. Examination shows bilateral parotid gland enlargement. Which of the following is the most likely diagnosis?

A) Adjustment disorder with depressed mood
B) Anorexia nervosa
C) Binge-eating disorder
D) Body dysmorphic disorder
E) Bulimia nervosa
F) Normal behavior