I've had a twitch in my left eyelid for two days now. I thought it would go away with a good night's sleep, but apparently nine hours isn't sufficient because it was still twitching away when I woke up this morning. It's not painful, but it is annoying as hell.
My obsessive compulsiveness made me do an Internet search to self-diagnose (something I do anytime I have ANYTHING that resembles a "symptom") and the general consensus is that it's caused by stress. And maybe too much coffee. The cure? Don't be stressed. And quit the caffeine.
I just might have to live with it.