“Borderline personality disorder is a specific type of personality disorder characterized by impulsivity and marked instability involving interpersonal relationships, self-image, and mood” (Reuben, psychologytoday.com). Borderline personality disorder is a serious mental illness that often disrupts family and work life, and the individual’s sense of identity. The development of the illness creates heavy alteration in a person’s long term life. Schizophrenia is another disorder that creates change in personality. “People with the disorder may hear voices other people don't hear. They may believe other people are reading their minds, controlling their thoughts, or plotting to harm them. This can terrify people with the illness and make them withdrawn or extremely agitated” (What is Schizophrenia, nimh.nih.gov). This disorder can cause changes in personality due to the disturbing and overwhelming unusual brain activity a person will experience. Schizophrenia is a disorder that develops over the span of a person’s life. This creates viewable changes in someone’s personality because of the personality that was previously displayed before the disorder was diagnosed. Disorders are a common cause in changes of personality and have impacted many