<prompt> Which of the following is not a common feature of anorexia nervosa?Binge eatingAmenorrheaSelf - perception of being fatUnder weight  <response>: All the four options are features of anorexia nervosa. However, if one has to chose, the best answer would be binge eating. Though binge eating is seen in almost 50 of patients with anorexia nervosa, however its not a core symptom of anorexia nervosa. Amenorrhea has been removed as a diagnostic criterion in DSM-5, however, studies have shown that around 68 to 89 of females with anorexia nervosa have amenorrhea for at least 3 months 