Complex PTSD is not a formal diagnosis (it's not listed in the DSM, which listed mental health disorders) but it is commonly acknowledged. There is a new edition of the DSM coming out soon that has included many of the CPTSD descriptors in the description of PTSD.

I have found that the descriptions of complex PTSD fit my experience exactly as well. I suggest reading Judith Herman's book Trauma and Recovery, which talks about the symptoms and recovery in greater detail.