Crack users and violence. What is the relationship between trauma, antisocial personality disorder and posttraumatic stress disorder?

Title: Crack users and violence. What is the relationship between trauma, antisocial personality disorder and posttraumatic stress disorder?

Background: Crack use is frequently related to severe social and psychiatric conditions including Antisocial Personality Disorder (ASPD) and Posttraumatic Stress Disorder (PTSD). Social vulnerabilities increase the frequency of traumatic exposure.