Ooops, sorry, my bad; I got a little agitated reading the original post, sorry. I did mean complex, not chronic.
There is a good website for definitive definitions, as they are doing much research now into all forms of PTSD: if you google PTSD, go to the VA web page, it's the first or second thing to come up. I think it's listed as the National Center for PTSD.
I apologize for my inaccurate response.