Dear James,
I have not been in therapy for a long time, so I have not been " diagnosed" with anything. However, I think I had dissociation. I can relate to what you are describing.
When Scott died, I went in to shock. What was "interesting" about it was I realized that I had gone in to shock, at a lesser level , at age 14, when my F told me my NPD mother was "fine".
What happened to me when the police told me about Scott was a repeat of what happened at 14. I did not know that I went in to shock at 14,until I did with Scott.
So, I think that I have BEEN in shock since age 14.
After that I always felt numb. Prior to that,I was not numb.
I stayed numb from 14 on. I felt dissociated from reality.
After my children could drive and I did not have to take them places , I gave up, at a deeper level. I had no idea HOW not to be numb, so I just gave up.
I knew my thinking was not right ,but didn't trust therapists and nothing I tried , such as support groups , helped.
I started feeling like I had my M with me all the time, in a strange way. I "knew" she wasn't, but I felt like her "presence" was with me and I felt a sense of comfort and also, "unreality".
I don't know what that was,but I "knew" I was not 'present" in reality,but removed.
I think that what you have ,James, in 'my own" terms ,is "shock" from your life , which was too much for a child to handle. As you face the truth, I think the shock will go.
For me, the more "scientific' the name is, the more scary it is.This is JUST my opinion. I am not a working professional and cannot diagnose, but I like to think in simpler terms , for myself.
I think you have been in shock , like I was with Scott ,b/c there is just so much a body and mind can take before they 'go numb"
That is my opinion, based on my own experience. I could be wrong,of course. Compost what does not fit, dear friend.
Love Ami