DSM-5-TR · Cluster B
Borderline personality disorder
A pattern of instability in emotions, sense of self, and close relationships, sometimes alongside impulsivity.
What instability can look like
A change in plans with someone close may bring intense fear of being left, followed by anger, sadness, or an urge to cut off contact. Other experiences can include an uncertain sense of identity or difficulty returning to an emotional baseline. Clinicians consider how often these patterns recur and how much they affect daily life.
Borderline personality disorder and bipolar disorder
Both can involve substantial changes in mood. An evaluation looks at their timing, triggers, and accompanying changes in energy, activity, and sleep. Bipolar disorder is characterized by episodes such as mania or hypomania. In borderline personality disorder, intense shifts can occur in response to events in relationships. A mood history can help a clinician make sense of overlapping experiences.
Reading your SimilarMinds score
The borderline scale summarizes your answers on the questionnaire. A clinical assessment considers the pattern over time, the circumstances around it, and how it affects daily life.
Take the Personality Disorder Test Dependent personality disorder
APA overview of personality disorders · NIMH guide to borderline personality disorder · DSM-5-TR reference