I am going to bump this topic up since it seems its something we need to be reminded of. I spent so many years second guessing my sanity in daily living with PTSD before what I knew what I was dealing with. Now since I did that so many years I developed secondary/vicarious PTSD. That now reflects in my actions in coping or not coping with the daily stresses we have. I hope the link helps. I think the site The Gift from Within might also have some information  on it. I will spend some time looking around for more information. Don't let the secondary PTSD cause you to second guess yourself.

Reality is determined not by what scientists or anyone else says or believes but by what the evidence reveals to us.
-- Alan Hale