Borderline personality disorder (BPD) is a mental illness. It develops during adolescence or early adulthood. It’s marked by a pattern of emotional instability, impulsive behavior, distorted self-image, and unstable relationships.

➖What causes BPD?
Researchers are still trying to learn the exact cause of BPD. Multiple factors may contribute to the disorder, including genetics, environmental factors, and serotonin abnormalities.
▪️Genetics: BPD may be a genetic condition. A study on twins and BPD published in the Journal of Personality DisordersTrusted Source suggests the disorder has a substantial genetic component.
▪️Environmental factors: Growing up in an unstable, abusive, or neglectful environment may raise your risk of developing BPD.
▪️Serotonin abnormalities: Serotonin is a hormone that helps regulate mood. Abnormalities in serotonin production may make you susceptible to BPD.

➖Who is at risk of BPD?
You may be at risk of developing BPD if:
▪️you have a family member with BPD
▪️you felt emotionally unstable or emotionally vulnerable as a child
▪️people in your household were impulsive when you were a child
▪️you were emotionally abused as a child