What are the four stages of BPD?

Can you please elaborate on the four distinct stages of Borderline Personality Disorder, also known as BPD? Understanding these phases could provide valuable insights into the progression and management of this complex condition. Are these stages linear, or do individuals experience them in a nonlinear fashion? How do these stages typically manifest in an individual's behavior, emotions, and relationships? Additionally, what therapeutic approaches are recommended for addressing each stage effectively?