This is a super amazing book that everyone should probably read, even if they're like me and don't have any PTSD, complex or not. I've seen flashes of the consequences of this in people around me. Often it manifests as someone freaking out over simple life hiccups, but the types of reactions I see line up with the patterns outlined in this book. (Everyone has innate reactions that come out in response to external stimuli regardless of if they have any PTSD or not, and that is what I mean when I say I see them. The book outlines them very well, so it's easier to catch them in everyday life. cPTSD draws out these reactions more as they've been cemented into place over a long period of time.) I think this book would really help people understand both their own sudden, emotional reactions and those of people around them, leading to better understanding and, hopefully, more successful communication and better relationships. Identifying how/why someone responds a certain way to conflict, in my opinion, would benefit everyone because those responses could be anticipated and dealt with in a healthier manner.
