I have problems with the DSM and so do many other people including psychiatrists.
For instance:
Learning that the traumatic event(s) occurred to a close family member or close friend. In cases of actual or threatened death of a family member or friend, the event(s) must have been violent and accidental.
So, watching your close friend die while you hold her in your hands trying to get her breathing again because she wolfed down a bottle of sleeping pills will not qualify as trauma that can cause PTSD? I don't think so.
Yet, I have been first on the scene of a young man busy dying with the side of his head rully ripped off and brains hanging out. I couldn't save him so I covered side of his head with a towel so others wouldn't have to see it. It didn't give me PTSD and neither have the other people I have watched die. I was a combat medic. I have also "died" myself with full flat line for a period of time. That also didn't trigger PTSD nor does it bother me a lot for the other many very close calls I have had. However, being physically and sexually abused from age 2 to about age 12 has caused problems. Being abandoned at age 16 when my parents engaged in a truly nasty divorce and used me as a tool to hurt the other also gave me problems. Being repeatedly refused for years when I tried to express my love for my former wife has also caused problems. Being incarcerated by mistake in a facility that tried to give me drugs that would probably kill me and did other things that had a very high chance of killing me five different ways caused major problems. So what was the difference? In that facility I was absolutely powerless. All I had as a "weapon" was my mind, they were backed up by sub-machine guns (police).
This put me on the very edge. I still would most likely have escaped PTSD but for one single event that would normally never be considered enough to cause PTSD, yet it has and has been diagnosed by a highly qualified Forensic Psychiatrist.
That final event was a telephone call from the woman I loved telling me that when I came back to our house she would not be there. Never mind the reasons for that except to say that such an event had never been considered by either of us until it actually happened.
So, is being told by your wife she is abandoning you enough to cause PTSD? It certainly did in me.