What Causes Twitching In The Lower Left Eyelid?

My lower left eyelid is twitching and has been for the last week. I also have a short attention span, which is new, and a very short temper, also new. I m also pretty restless and tired which isn t really normal because I get lots of sleep. I also have been experiencing a lack of coordination recently. Basically, I try to type the letter G and I end up pressing the letters F , T , and R . This is not normal at al because I am normally very coordinated, especially when typing. I ve also been pretty jumpy lately and the tiniest things will startle me now.