Hm-mm-m-m.... well... I don't know the answer to this. And I've never received a formal diagnosis of PTSD (or anything else for that matter.) But I think I could make a pretty good case for being given a diagnosis of cPTSD. And I'm irritated / annoyed by almost everything. Plus I probably do also have a serious disposition most of the time. Whether or not it's more-so than most people I guess I can't say. But, anyway, just based on my personal experience, I would say this makes sense to me... for whatever that's worth.