Like bipolar disorder, little is known about the actual causes of borderline personality disorder. There is a lot of controversy about genetics versus environment in this area. However, it appears through research that, while bipolar is definitely hereditary and biological in nature, borderline personality disorder is more likely to be a result of environment and situational stimuli.
As you can see, many similarities exist between bipolar and borderline personality disorder. It can often be quite difficult to distinguish one illness from the other, even for doctors and psychologists. If you suffer any of the symptoms discussed here, it is important to obtain the assistance and diagnosis of a licensed professional for appropriate diagnosis and treatment of your symptoms. You should never attempt self diagnosis and treatment for symptoms such as those associated with bipolar and borderline personality disorder without the help of a psychiatrist or psychologist. Doing so may cause your symptoms to worsen, and make treatment less successful in the future.