I recently attended the American Psychiatric Association Conference in Philadelphia and spent the week updating on all the evidence based methods approved for treating PTSD and traumatic memories. Virtually all methods merely temporarily blocked memory retrieval and did not resolve the problem permanently. The best treatment, other than the long process of psychotherapy, was the virtual reality programs that facilitated retrieval and reframing of the traumatic memory.
Generally, pharmacology does not treat psychological causes, it merely blocks the symptoms.
Old on a second here. The long process of psychotherapy has a pretty damned good track record for PTSD. Why dismiss it so quickly?
I imagine this would include the construction of an emotional cushion/buffer zone that would allow the traumatized individual a safe emotional place in which to observe and re-evaluate the retrieved traumatic memory/memories.