<prompt> A young lady is present with H0 repeated episode of over eating binge followed by purging using laxatives, she probably suffering from-Bulimia nervosaSchizophreniaAnorexia nervosaBenign eating disorders  <response>: A i.e. Bulimia nervosa Binge eating i.e. episodes of overeating in less timefollowed by attempts to counteract the effects of overeating by - self induced vomiting, purgative abuse, appetite suppressants periods of starvationQ is characteristically found in bulimia nervosa. Principal Diagnostic Criteria Anorexia nervosa 1. Over evaluation of shape weight i.e. judging self-woh largely, or exclusively, in terms of shape weight Active maintenance of an unduly low body weight eg BMI 17.5 Amenorrhea in post menarcheal females who are not taking an OCP. This criteria is often omitted. Bulimia nervosa Over evaluation of shape weight i.e. judging self-woh largely, or exclusively, in terms of shape weight 2. Recurrent binge eating i.e. episode of uncontrolled over eatingQ Extreme weight control behaviour such as strict dieting, frequent self induced vomiting or laxative misuse Diagnostic criteria of anorexia are not met. Binge eating disorder Recurrent binge eating in absence of extreme weight control behaviour Q eg purging etc seen in bulimia nervosa. 