I often get asked if my son is Aspergers. As of this week, I now have 4 different psychologists who all agree that my son is not autistic although he does shares some of the characteristics. We are in the middle of a full neuropyc eval and partly just to rule it out. One of the questions on the assessment asks if there is anything else that could cause the symptoms. There are lots of other possibilities, including ADHD (inattentive), Tourette's, language disorders, other LD's or just simply profoundly/high gifted. It's is not at all unusual for gifted kids to have inattention problems with uninteresting tasks and not have any of the above issues.
As for your son, I can't really tell from your post. Starting with the pediatrician and ruling out a physical reasons for the vocal tik as aeh suggests is probably a good start. These are simple things one doesn't want to overlook. When my allergies bother me it can manifest mostly with my constantly wanting to clear my throat. Allergies could also affect his hearing and that could affect attention.
Have you tried asking him? Does he know what he sounds like and does he have an explanation?
