Hello PoetMan and welcome to NeuroTalk.
I also have PTSD and I had my first experience with anxiety/panic attacks as part of the PTSD.
NeuroTalk is also part of PsychCentral which is a mental health forum that might be of interest to you......
http://psychcentral.com/ If you click on community it will lead you to the forums.
As for your mystery condition ~ we are here when and if you want to talk.