Dermatitis artefacta lies in a gray zone, between the specialities of psychiatry and dermatology. The condition could mimic a number of other lesions and therefore is a source of much confusion in clinical practice. Here, we describe a case of dermatitis artefacta in an 11 years old girl, which resembled self-harming behavior in Borderline personality disorder. We then discuss how the two could be differentiated and why this becomes imperative while dealing with such cases.