My left eye brow shake and twitchs now and again Its been like it for years. What is causing it? Please help.
Stress and lack of sleep usually does that. As the twitching and shaking has been troubling you for years, I highly recommend visiting a medical clinic. Hopefully the doctors can give you a clearer explanation and put your mind at ease.
It's just a spontaneious muscle contraction that occurs in most people from time to time. Don't worry about it :D