If that is the case, then there isn't much debate on it really. PTSD is not currently medically curable. That is fact, not fiction.
What is up for debate would be IMHO, the actual diagnosis in relation to how serious the PTSD is. For example, because a person can be diagnosed with PTSD with only having the symptoms for 1 month after a traumatic event, then a physician who knows no better, could make a diagnosis of PTSD, because it does fit the pre-requisites by the DSM, therefor, the person may in fact of been diagnosed with PTSD, undergone some counselling, exposure therapy or a quick course of CBT, and never again have the symptoms of PTSD within their life.
The debate would therefor really be IMHO, are physicians diagnosing PTSD correctly or are they utilising the disorder for cases that should be diagnosed elsewhere?
As the DSM even clarifies upon the top note of the symptomatic scale; When an individual who has been exposed to a traumatic event develops anxiety symptoms, reexperiencing of the event, and avoidance of stimuli related to the event lasting more than four weeks, they may be suffering from Anxiety Disorder. (Anxiety disorder opposed to PTSD)
You can get an idea of which fits what at [DLMURL]http://www.behavenet.com/capsules/disorders/dsm4TRclassification.htm[/DLMURL], and if you actually read through many of the different disorders, you will find that many of the same questions are used, or simply expressed a different way, but you may also note, that the intensity scales for diagnosis are often less than for PTSD, because if the intensity is at a medium to low level, then in most cases, the person is quite curable.
Basically, IMHO where the confusion stems from the diagnosis of PTSD, is that basic physicians who have no true understanding about the diagnosis of this disorder, do not comprehend that a diagnosis is not based upon meeting the actual criteria of the disorder, instead they are based on meeting a certain quantity of the disorder, the intensity of the symptom is a key factor, not the symptom itself, and then the physician must also be skilled in questioning and recognition of certain behavioural patterns within a patient who has PTSD.
A patient with PTSD will more often than not, understate their symptom severity, they will deny that anything is wrong, they will be hesitant and more often than not, they will be very nervous when with the physician, ie. jumping of leg or foot, tapping of fingers, etc etc, all signs pointing to the fact the person needs to escape to safety.
Lets face facts here. We see misdiagnosis just about every day here, with people who have been diagnosed with everything else before getting to PTSD itself. Some of this is misdiagnosis, some is actual correct diagnosis, generally because physicians play a large gambling game with diagnosis, in that trial and error is required to some extent, in that they will diagnose with a lesser disorder first, treat you for it, if no improvement is made, they will generally then look upward to a more serious diagnosis, generally one or two before getting to PTSD itself. Why? Because PTSD with its criteria is actually supposed to be diagnosed to those who are literally that bad, and cannot be cured, hence why when you reach PTSD diagnosis, there is no cure.
There really is no debate as such, more just indifference between how physicians are using the diagnosis of PTSD itself, and not using it for what it is meant to be, being the most serious and last point of call. Some physicians are trying very very hard to get PTSD lowered to a level where they can comfortably use it to label, then treat it to cure, so they can have statisics, their names highlighted for some recognition, etc etc... trust me, the true gods of psychiatry are working on the matter, and they are not working on basic crap like the diagnosis, CBT and exposure therapy, instead they are going to the core root of the issue, the brain components associated to memories and trauma. This is where the secrets lie on how to unlock the issue's. EMDR, TLI and other treatments hit the mental imagery of our brains smack bang on, and these are getting very good results, so if they can go a little more beyond these forms of treatments, then a cure may just be around the corner.
It goes past just the memories, and into our own perceptions, concoctions of imageries we have made up and developed, the effect of some symptoms such as the social withdrawal, anger and others. When PTSD is developed, a person has gone far beyond just anxiety, depression and basic associated symptoms, where they have instead moved into a realm of hell, to put it simply. Getting past much of this is one feat by itself, but the problem is with PTSD, is that even once past the worst, simply watching something on TV, or listening to the radio, a comment, can send you backwards again, trigger a symptom, and so forth. With other disorders, once you are past your anxiety, trauma and depression, these factors do not raise an immediate reaction and symptom outbreak again, as you have been cured.
These new facets about ambidexterity and other treatments could just be the gift to the future of a cure, as these hit the cortex of our brains, which is where a CT scan shows a clear imbalance within our brains, and these possible techniques are known to cause their own imbalance within the brain, thus could be the simple fact to rebalance an already unbalanced brain in the wrong facet, such as PTSD.
My two cents on it anyway... and only my opinion on the matter.