Hello
CPH73 
I join
Faith in welcoming you to bpdfamily! Though I'm sorry you had to find us, I'm very glad you did. You've been through so much with your son. How old was he when he was seeing the Duke Psych? Often, professionals are reluctant to diagnose a PD (personality disorder) in adolescents since their personalities are still forming. Nonetheless, you were advocating for your child and I'm sure it was frustrating that you weren't being heard.
He does not openly share things with us and to talk to him makes me very nervous because I am never quite sure if something will set him off.
I can relate to the anxiety/being nervous talking and not being sure what, if anything, will trigger a negative response. I have found the communication tools here very helpful and wonder if you've had a chance to look around the site and if something you've read has helped you?
As
Faith said, lots of us here have similar experiences, you are not alone. Keep posting and reading, and come back here with any questions or just to share more. We are all learning together.
Here's a good place to start,
HOW TO GET THE MOST OUT OF THIS SITE It has many of our best articles with links to more. We talk a lot about validation here and that's the first thing that started to make a difference in my relationship with my DD25. There's a link about Validation in the link above, here's an excerpt:
the message is that validation of feelings is vital to connecting with others and that the mutual validation of feelings is important in all phases of relationships including building, maintaining, repairing, and improving them. I underlined "mutual" to point out that we not only want to be validating, but we want to grow to be role models for our children and hope they also see the importance of validating others.
I hope you settle in and become part of the family, there is much to be learned and there is definitely hope.
Again,

~ OH