i just want to say that i'm not an expert and i can't give you any advice concerning medical stuff etc... but i sure know a bit about people who stutter. first of all, stuttering in kids is fairly common, so your son might not stutter in the future, but since you said he also has this problem with " back of throat sounds " that could be the root problem of his stuttering (unless stuttering runs in your family, i that case it's probably just genetic). regarding "how to act when he stutters", just be patient and loving with him, it's not his fault and he didn't ask for it, it's gonna be a pain in the ass for all his life (if he doesn't grow out of it) but people around him can make him feel appreciated and understood, so make sure to not look upset/angry/impatient when you're listening to him. as i mentioned before, people are going to be the ones who will decide if your son will be happy regardless his issue or not, people could pick on him, people could help him, people could laugh at him, people could be supportive, it really depends, but having "good" people aroung him will surely be a good thing. Again, maybe he'll grow out of it or not, we can't predict the future, and if you want advice on whether or not you should send him to speech therapy, i'm not the good guy for you, sorry, but i'm sure other people that know more about it than me (and that have experiences about it) may help you. ask me anything you'd like to know, and if i wasn't clear enough on certain things, please let me know. Until then, have a nice day/evening/night!