Personality disorders affect an estimated 9% of Americans. Only a mental-health professional can diagnose a personality disorder, typically in adulthood. Insider compared the behaviors, traits, and ...

When you think of someone with borderline personality disorder, it’s likely that you imagine their tendency to let their emotions veer out of control, become overly intrusive, and alternate between ...

DEAR MAYO CLINIC: What is borderline personality disorder and how is it treated? Borderline personality disorder (BPD) is characterized by a pattern of instability in personal relationships, poor self ...

The role of environment and pre-existing risk factors in BPD has identified new therapies. Growing awareness of this mental illness characterized by heightened emotional response and volatile ...

Lindsay Modglin is a nurse and professional writer who regularly writes about complex medical topics, as well as travel and the great outdoors. She holds a professional certificate in scientific ...

HAMBURG — What is “normal” and what isn’t? This question is constantly being renegotiated in psychology. And sometimes, the boundaries shift, as they are now. What is considered a personality disorder ...