What type of therapy is he receiving right now for his PTSD?
PTSD can be dealt with fairly quickly, It's what I do for a living, getting rid of the negative emotions attached to the traumatic memories.
When you experience a traumatic event you are experiencing all kinds of negative emotions. These negative emotions are part of the memory of the event. At a later date that memory gets trigger for what ever reason. What has taken place back in those moments has long since stop. It is now history. It no longer exists. Yet the memory of what took place feels very real and for many when this happens to them it is real! They are re-experiencing all of those trapped negative emotions attached to the memories of what took place. It is these trapped emotions that cause the problems. If you remove the negative emotions from the memories, they no longer have an affect on them. The memories now have no power over their life, so you get their life back.
As for what you can do. Make sure he gets the right kind of treatment to get rid of these negative emotions. Talk therapy is practically useless when it comes to dealing with this.
Understand that when he is being triggered, this is what is happening to him. Pressuring him to talk about it doesn't help that's why talk therapy doesn't work, it doesnât get rid of these trapped negative emotions. When he's triggered the best thing you can do is back off and let him deal with it. He has to anyway. If he wants to talk, listen.
The only place you may need to apply pressure is to make sure he gets treatment and the right kind of treatment.
Be well,
Larry
"you can't change history, but you can change the future!"