"Primary Structural Dissociation: Involves one major part of the personality mainly focused on daily life (i.e., the ANP), and the other (i.e., the EP) mainly fixated in defense and re-enactment of traumatic memories. This type of dissociation is often seen in simple PTSD. "
"Secondary structural dissociation: Involving one ANP and more than one EP. This is common when traumatization is more repetitive, severe, and prolonged, especially during childhood. This level of dissociation likely characterizes patients with Complex PTSD, trauma-related borderline personality disorder (BPD), and DDNOS, Subtype 1. "
https://www.ncbi.nlm.nih.gov/ pmc/articles/PMC4055615/
https://www.ncbi.nlm.nih.gov/ pmc/articles/PMC4055615/# s1title
https://www.ncbi.nlm.nih.gov/