When considering Bulimia Nervosa, an episode is characterized by both of the following

Choice A reason: The denial of the seriousness of low body weight is a hallmark diagnostic criterion for Anorexia Nervosa, not Bulimia Nervosa. Patients with Bulimia are often at a normal or slightly above-normal weight and are usually painfully aware of their disordered eating patterns, often experiencing significant guilt and shame. Choice B reason: According to the DSM-5, a binge episode is defined by consuming an amount of food significantly larger than what most people would eat under similar circumstances, accompanied by a subjective sense of loss of control. This loss of control is the defining psychological feature that distinguishes binging from simple overeating. Choice C reason: Amenorrhea and maintaining a body weight below 85% of the expected ideal are traditional clinical markers for Anorexia Nervosa. While bulimic patients may have irregular menses, they do not typically meet the low-weight requirements of anorexia, as their caloric intake during binges often offsets the calories lost during purging. Choice D reason: While purging behaviors like laxative use and excessive exercise are components of Bulimia, they must be preceded by an objective binge episode for the diagnosis. Strict caloric restriction followed by purging is more characteristic of the binge-eating/purging subtype of Anorexia Nervosa, where the patient maintains a dangerously low body weight.