I find this very hard to believe. I could MAYBE believe it if the drug could target one "type" of memory, but one specific memory? No way. I think people who suffer from PTSD possibly had issues prior to the "event" that potentially caused or accelerated the onset of the disorder. PTSD is a state in which you "can't stop remembering." To be diagnosed with PTSD, you must have been in a situation in which you were afraid for your safety or your life, or you must have experienced something that made you feel fear, helplessness, or horror. PTSD changes the biology of the brain. MRI and PET scans show changes in the way memories are stored in the brain. PTSD is an environmental shock that changes your brain, and scientists do not know if it is reversible.
My Dad, 30+ years after serving 2 tours in Vietnam was just diagnosed with PTSD. Does he or did he let it control his life to the point where he could not function in Society? Hell no, he didn't even know he had a problem until he saw psychologist to get approved for VA Disability, related to other physical health issues potentially caused from his tour of service.
So, if something happens to you more than once or if something occurs to you over a very long period of time, the likelihood of developing PTSD is increased. This applies to the rats that were tested, them being shocked and associating the pain with the music. To bad we can't ask them what else they can't remember, like their name. Oh, that's right they're rats.
Cliff notes...
I've determined that my wife, or women in general could cause the on set of PTSD. BEWARE!~