A dentist refers a 21-year-old woman with a BMI of 26 to the PMHNP after he discovers significant enamel erosion and decay of her front teeth. What diagnosis does the dentist suspect?

Choice A reason: Anorexia nervosa involves significant restriction of caloric intake leading to low body weight. This patient has a BMI in the overweight range, making anorexia nervosa unlikely. Choice B reason: Binge eating disorder involves episodic overeating without compensatory behaviors. Tooth erosion is not typically associated with binge eating disorder, making this diagnosis less likely. Choice C reason: Atypical eating disorder is a broader term but lacks the specific oral findings that suggest purging behaviors. Choice D reason: Bulimia nervosa is characterized by recurrent binge eating followed by compensatory behaviors such as self-induced vomiting. Frequent vomiting leads to enamel erosion, particularly on the front teeth, which aligns with the dentist's findings, making this the most likely diagnosis.