I have occasional tics. Usually it involves jerking my head, randomly; or occasionally making a sort of barking/yelling sound, briefly. They're very seldom; some days they don't happen at all. Most of the time they happen when I am sitting quietly, and it feels a little like I just do them, without thinking, like it's impulsive. They feel like voluntary movements; only I didn't decide to do them. Does that make sense?
Anyway, these are nowhere near Tourette's, which requires multiple tics, multiple types of tics, and much more often than what I have. And they are not even something that a psychologist would address, because they cause absolutely no impairment for me. Maybe they make me look a little odd, occasionally, but most people most likely think I am just shaking my head or coughing.
An interesting fact about them is that I have them slightly more often now than I did when I was a child. This is the opposite of the way Tourette's tics happen, because those are much more common when you are young, and you may even "grow out" of them. This increase coincided with an increase in sitting still--I'm on medication for ADHD-like symptoms at the moment, and sit in class and at the computer much more than I used to.
I'm interested in how common this is. Do other people experience it, too? Do NTs? Do most people's neurological systems just kind of glitch like this on occasion? Or is it less common, and my experiences come from just generally having odd neurology?