Borderline is a DSM-IV axis II, which means it is a personality disorder. Being a personality disorder signifies that the disorder is chronic and have longer lasting symptoms which may interfer with quality of life. Although borderline personality is on the axis II, mental disorders could also develop, as well as other personality disorders. Some of the common mental disorders include, eating disorders, generalized anxiety disorder (GAD), obsessive compulsive disorder (OCD), bipolar disorder, panic disorder, attention deficient hyperactive disorder (ADHD), and conduct disorder. Other personality disorders that may be present are, antisocial personality disorder, narcisstic personality disorder, and obsessive compusive personality disorder (OCPD).
It is common for women with BPD to experience eating disorders, while men can experience substance-use. Adolescents with BPD may appear to be more anxious and have other personality disorders such as passive aggressive personality disorder, or shizotypal. Along with many other disorders depression may be an issue with people who have BPD.