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 is characterized primarily by restrictive eating and significantly low body weight, which may not result in the dental erosion described here. Choice B reason: Binge eating disorder involves recurrent episodes of excessive food intake without compensatory behaviors such as purging. Dental erosion is uncommon in this disorder. Choice C reason: Atypical eating disorder can present with mixed features, but the classical sign of enamel erosion suggests repeated vomiting, pointing toward bulimia rather than atypical presentations. Choice D reason: Bulimia nervosa is characterized by recurrent binge-eating episodes followed by compensatory behaviors such as self-induced vomiting, which often leads to enamel erosion and dental decay, especially of the anterior teeth. This aligns with the dentist’s observations.