LAF-- my DS8 has tics-- at this stage, we're still considering them to be transient, but he was also just diagnosed 2e (expressive/receptive language), I think (although I'm not getting a formal diagnosis until I need to) that he has mild ADHD (primarily inattentive with some impulsivity).
The coughing tic was the worst-- it began right as school started. 2nd graders are more judgmental than first graders, and it was immediately isolating. Between the tic and the social issues, he still has not made friends. The good news is that the coughing tic subsided, replaced by some short term eye-blinking.
He tried to develop a weird slurping tic over the past week-- so I bought him some stress balls at Target. Once he focused on squeezing the stress balls he stopped making noises. The eye blinks have stopped, so we are once again "tic free."