Several studies have been conducted for a long time to identify the borderline personality and to elucidate its distinctive characteristics from other psychopathologies. However, the different findings obtained in these studies carried out provided findings that this disorder is not yet understood sufficiently. Therefore, studies about the prevalence, the comorbidity, causative factors and treatment approaches of borderline personality disorder are of vital importance. Moreover, studies about suicidality among BPD patients also have a separate importance because repetitive suicidal behaviors complicate the medical care significantly. In this review, we aimed to reevaluate the recent studies conducted on the diagnosis, the prevalence, the comorbidity, causative factors, and treatment of borderline personality disorder.