This just started occuring recently and i am dumbfounded on how this could have occured. I am right handed and recently i have noticed that i started having Involuntary contractions of my 3rd digit (middle finger) and sometimes 1st (index) and 4th (ring) digits. I have noticed that this occurs when my hand is in the typing position or when holding the mouse; also, if i hold my hand outright in a relaxed position jitterness does occur. I live a fairly healthy lifestyle and the only caffine i consume is cup of coffee a day about 4 days a week. I do plan on consulting a physician, but i was wondering if anyone can offer some opinions.