Which physical finding is characteristic of Bulimia?

Bulimia nervosa is characterized by a cycle of binge eating followed by compensatory behaviors such as self-induced vomiting, excessive exercise, or misuse of laxatives. One of the distinctive physical findings associated with bulimia is the presence of Russell's sign, which refers to the development of calluses on the knuckles or hands. This sign occurs due to repeated self-induced vomiting, where the individual uses their fingers to induce vomiting, leading to friction and irritation on the skin.

The presence of Russell's sign serves as a physical indicator of the behaviors and psychological distress associated with bulimia nervosa, making it a key finding in clinical assessments. Awareness of this sign can assist healthcare providers in identifying individuals who may be struggling with bulimia, as it directly links a physical manifestation to the underlying eating disorder. This finding is instrumental in prompting further evaluation and appropriate intervention for the patient.

In contrast, the other options do not specifically or exclusively identify bulimia nervosa. Obesity may be associated with overeating disorders but is not indicative of bulimia specifically, as many individuals with bulimia maintain a normal weight or may be underweight. Pitting edema can occur with various medical conditions and is not a classic sign of bulimia. Dermatitis can also