How does the DSM 5 define borderline personality disorder (BPD)? The Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) categorizes BPD as a cluster B personality disorder.

Borderline personality disorder has one of the highest comorbidity rates of all of our psychiatric diagnoses, and that's because it is such a painful and frustrating disorder to live with.

While personality disorders typically aren't diagnosed in children, BPD is an exception. Learn about early BPD symptoms, the process of getting a diagnosis, and treatment options.

Both bipolar disorder and borderline personality disorder have similar symptoms, but there are key differences between the two. Here's all you need to know.