Tics and propriceptive disorders?

by Diedre
(South Africa)

My son 7 has been making soft noises for some time, they become louder at times and sometimes he does not even make them, although at the moment they are rather persistent. No one at school has noticed them and so it is not affecting him socially. We have had him tested for PANDAS, and are hoping it is not tourettes, we are also exploring emotional options, he is an anxious child in general, he is currently at OT for low muscle tone and the therapist mentioned proprioceptive dysfunction, so I thought it would be great to hear if these noises could be related to this...

They can be heard more in his home environment, when watching TV, on the computer, but he will also make them when running with us, doing reading homework etc, however his teacher has not noticed them when reading in the class? The OT had never heard them before until this week when she focused specifically on sensory related tasks, he says sometimes he makes them as they make him feel good but most of the time he does not know he is making them! Any feedback would be appreciated - Thanks!