Which eating disorder is characterized by episodes of overeating followed by purging?

The eating disorder characterized by episodes of overeating followed by purging is bulimia nervosa. Individuals with this condition often engage in binge eating, where they consume large amounts of food in a short period, and then feel a loss of control during these episodes. Subsequently, they may employ various methods to prevent weight gain, such as self-induced vomiting, excessive exercise, or the misuse of laxatives. The cycle of binging and purging can have serious physical and psychological effects, including electrolyte imbalances, gastrointestinal issues, and emotional distress.

In contrast, the other terms provided do not relate to eating disorders. "Blamable" refers to something that can be blamed or held responsible. "Chauvinism" involves an excessive and uncritical loyalty or support for a particular group, often applied in the context of gender. "Cauterize" is a medical term that refers to the process of burning tissue to remove or close a wound. Thus, bulimia is the only option that accurately describes the specified behavior associated with an eating disorder.