humming and OCD..what it can be

[kkver]

My son started to Tic after a strep around march end. i had posted his details in other post. he went thtough zithromax 10 days course in mid of april and those 10days he was tic free . After 5 days of stopping his antibiotics some humming returned with very little other tics and after 10 more days he got tic free . Nearly after 2 weeks i started to see him little humming . I was just wondering what they are and will like more input on that.

 

thanks.

[Chemar]

hi

 

humming is recognized as a vocal tic