Unfortunately I don't have any answers since my being forced to deal with this (rather than try to pretend otherwise) has come to a head. I've always felt the dissociation but I thought at the time it was advantageous--giving me an emotional 'edge' over others, so to speak. Where others cried or felt sad, angry, etc. I was able to simply feel detached, which allowed me to continue to function for a while.
All that has a price, however--and in recent years I've come to find this. Dissociation isn't precisely useful in school (if anything, quite a disadvantage), and detachment doesn't allow you to build the bridges you may need in times when you may need help. You feel like you can deal because you've dealt via dissociating/detachment for so long, but then it becomes acute and what once was functional detachment becomes (especially in the midst of something such as an anxiety/panic attack) erratic dissociation, where you feel nothing is real, you yourself aren't real, etc. Logically, you know things are real, but *you* don't feel real and you feel almost as if you're dreaming or in slow/fast motion. It's a disconcerting feeling.
Anyway, as far as advice goes: you do need some form of talk therapy, not too intensive at the beginning (I can't imagine a therapist worth his salt would pelt you with questions knowing you have PTSD--mine and I are just getting to them and I've been seeing her for almost three years). CBT would also be beneficial, as well as medication (for anxiety, or depression, or whatever other symptoms/issues you may have that cannot be sufficiently dealt with via therapy alone at this point in time).
Hang in there, is all I can truly say. Dissociation is a very weird feeling and you never quite get used to it.
