Borderline personality disorder (BPD) is a particularly complex psychiatric condition. People with this disorder have an unstable and insecure self-image, a dangerous propensity to self-harm and suicidal behaviors and transient and recurrent dissociative symptoms. In this book, Chapter One discusses challenges and complexities of BPD in adolescence. Chapter Two provides a theoretical and practical approach for the management of patients with a BPD diagnosis and their related maladaptive behaviors when admitted into mental health hospitals. Chapter Three analyzes the borderline maladaptive behaviors (BMBs) of inpatients with a diagnosis of BPD. Chapter Four reviews impact on life events and the need for psycho-diagnostic classification of the trauma, abuse and dissociation in patients with BPD. Chapter Five explores cross-modal integration of emotional auditory-facial stimuli in BPD, particularly emotionally congruent auditory-visual stimuli facilitation effect and its association with cooperativeness.