Borderline personality disorder is a common and severe disorder that confronts health professionals with some of their limitations. Relational difficulties with these patients lead to discontinuation of follow-up or unnecessary or even deleterious care. We present here simple answers to the questions that will inevitably arise in the management of your borderline patients. They are applicable by both general practitioners and specialists, to better meet the challenge that these patients ask us. We insist on properly recognizing and detecting the disorder. We propose to disclose the diagnosis to the patient and provide the necessary explanations. This is the better way to anticipate the repeating crises. Finally, interacting with other caregivers is important to ensure an effective and sustainable care system for these patients.