Son has developed a tic?

Not sure if this is the correct Reddit forum to post this, if not, my apologies –I think my son (age 6) has developed a tic, but I don’t believe there is anything to be done except letting the tic run its course? He is always clearing his throat and whistling. Not sure if the whistling is part of it. I know he tried and tried for weeks to learn how, so maybe that has something to do with the whistling, but the clearing the throat is pretty constant once he starts. It seems to happen more when he is calm and doing something like drawing or watching tv.Anyone ever dealt with something like this? Has bad as it sounds, it drives me nuts sometimes as well. I don’t bring attention to it, but not sure what to do.Thanks! via /r/Parenting http://ift.tt/2pwjstC