Borderline Personality Disorder is a serious illness that has historically been misunderstood, misdiagnosed and mistreated. It has been wrongfully stigmatized in the medical community. It is in fact a very treatable condition, with increasingly positive results when identified early and addressed appropriately. Thankfully, recent developments in the fields of Psychiatry and Psychology have enhanced the understanding and treatment of the Borderline Syndrome in adults and adolescents. Also in recent years it has become evident that Borderline Personality Disorder is much more prevalent in children than it is actually diagnosed. It has been one of the most under-recognized and misdiagnosed conditions in Child Psychiatry. Until now there has been little information available to help the understanding and management of this disorder as it emerges in younger children. Early recognition and treatment is critical to positive outcome. This is a practical guide for parents and professionals in navigating the perilous territory of the Borderline Child. Parents will be empowered by a clearer understanding of their child and how to help them. It will behoove the professional reading these chapters to see the Borderline Child from the parent perspective and use this dimensional map in formulating a comprehensive treatment plan. A systematic, multidimensional, mindful approach is the key to success, and in maintaining your own well-being while doing this important and challenging work. Take from it what you can for your best, highest good. We are all in this together.