I'm really concerned because for the past few days, my index finger on the left hand has been twitching a lot. It doesn't hurt, but it used to happen only occasionally and now it's happening all the time. I work with computers all day, but this twitching occurs even when I'm not using the laptop, like when I'm just resting. My other fingers are totally fine. When I saw a doctor, they mentioned it might be due to computer use or a vitamin deficiency. I'm just wondering, could there be any other reason for this? Is there any medication I could take to help with the twitching?