Here's an interesting article from PC suggesting that PTSD starts with childhood trauma. My T has told me that he thinks my PTSD developed in my childhood even though the actual serious effects from it did not start until well into my adulthood and several serious setbacks. The article focuses on combat PTSD sufferers but the childhood connection may speak to all sufferers. In my case, that appears to be true.
http://psychcentral.com/news/2012/11...ers/47943.html