You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Diagnostic criteria for Bulimia nervosa are all EXCEPT and explain in detail?
(B) Presence of other psychiatric disorders # BULIMIA NERVOSA (BN) is an eating disorder characterized by eating binges typically followed by efforts to purge calories through self-induced vomiting, laxative and/or diuretic abuse, prolonged fasting, or excessive exercise. Fear of weight gain leads to the characteristic purging behavior, but BN is centered around the practice of binge eating.> The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), describes diagnostic criteria for BN and includes the following:> Recurrent episodes of binge eating, characterized by the following:> Eating an amount of food, in a discrete period of time, that is larger than most people would eat during a similar period of time under similar circumstances.> A perceived lack of control over eating during the episode of binge eating> Recurrent inappropriate compensatory behavior used to prevent weight gain> Occurrence of binge eating and inappropriate compensatory behaviors, on average, at least twice a week for 3 months> Self-evaluation unduly influenced by body shape and weight> Does not occur exclusively during episodes of anorexia nervosa.