I am 17 and my parents had to deal with this exact same thing ever since I was born. Just be as supportive of your child. Yeah you can take your child to a pathologist but in my several years of both private and public speech therapy, it is often the same things. They teach him strategies on how to "control" his stuttering and ways on to make it easier for him to talk. In my opinion, the therapy did not help. But my therapist was the one person who I could talk to about problems I had with stuttering. I was able to rehearse presentations I had to give in front of my class with my therapist and I was able to talk to her normally because I knew that she was not judging me about my stutter. As of now, don't stress too much. Often times when stuttering unexpectedly effects someone, it should go away within a couple or several years. It was something I was born with so for me it is not that easy. But for your son, I would just be very supportive of him and try being his best friend. The more closer you are with him, the easier it is for him to communicate with you about stuttering and anything else! ​ Best of luck to you and your son. If you need anything. We are here!