I’m sitting in a chair across from my psychologist. Two cameras point at me, and a white noise machine runs outside the door. I’m not supposed to move. Keeping my neck tight and my chin tucked, ...

Tics are hard to describe. It’s this tension, energy, pressure that builds up until you tic and you get a bit of relief—but only for a moment. You tic until you get that "just right" feeling, and then ...