Beth's pattern of excessive food consumption followed by compensatory behaviors like vomiting or laxative misuse suggests a psychological eating disorder. To identify the specific disorder, we will examine the characteristics of the provided options:
- Anorexia Nervosa: Marked by an intense fear of weight gain and a distorted body image, leading to severe food restriction and significant weight loss. This disorder typically does not involve binge eating followed by purging.
- Body Dysmorphic Disorder: Characterized by an obsessive preoccupation with perceived physical flaws that are often minor or imperceptible to others. This disorder is not related to eating and purging behaviors.
- Bulimia Nervosa: Individuals with this condition experience recurrent episodes of consuming large amounts of food (binging), followed by compensatory actions to prevent weight gain, such as self-induced vomiting or laxative abuse (purging). This accurately reflects Beth's behavior.
- Conduct Disorder: Defined by a pervasive pattern of behavior that infringes upon the rights of others or violates societal norms, encompassing aggression and deceit. This disorder is unrelated to eating patterns.
Based on this analysis, Beth's reported actions are consistent with Bulimia Nervosa. Consequently, Bulimia Nervosa is the correct diagnosis.