The document provides an overview and comparison of PTSD, Complex PTSD (CPTSD), and Borderline Personality Disorder (BPD). It discusses the core concepts and diagnostic criteria for each disorder. CPTSD is described as resulting from prolonged, repetitive trauma such as childhood abuse and having additional symptoms beyond classic PTSD, including affect dysregulation, consciousness/attention problems, self-perception issues, difficulties with relationships and making meaning of the world. The document notes similarities between CPTSD and BPD in several symptom domains.