I think I have Tourettes because Sometimes for no reason I will just start making sighing or grunting noises. I really can't explain them. I will also start shaking or nodding my head, moving my eyes back and worth and up and down, quietly gasping, and suck air through my lips and teeth. And if I touch something, I smell my fingers numerous times. Also, when I hear music, I will click (chatter) my teeth to the beat of the song. I don't know if this is Tourettes or OCD but I do these thing a lot every day! I can't control when they happen and usually don't notice them for about a minute. And when I stop for a minute I start doing it again! HELP! :-(