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Borderline Personality Disorder

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

Borderline Personality Disorder is a mental health disorder characterized by unstable moods, impulsive behavior, difficulties in interpersonal relationships, and a distorted self-image.

"Borderline Personality Disorder" also found in: