I have experienced pretty much what you are describing, which was a beginning symptom of MS for me. I actually mentioned it to a friend who is a neuro and he dismissed it pretty much. But, he is very conservative, and wanted me to eliminate fish oil and diet drinks from my diet before launching into expensive testing. I kind of bypassed it all and checked into the ER, where I got the MRI that showed brain de-myelinization. He changed his stance after I showed him the scan! (Note that I did have legitimate reasons for going to the ER..it wasn’t just to finagle an MRI. I didn’t even ask for one, but I did have some dizziness and chest tingling – which may have been an MS symptom – that prompted me to go.)
For me, the twitching comes and goes. I experience it in both hands, mostly in the little and ring fingers. Caffeine might make it a worse. I say “might” as I am not sure – I am not observant enough to keep track of it all.
I would suggest you see a neurologist, though he might dismiss things. They see very bad cases of MS and may view your symptoms to be too mild to bother with. It is not that they are not caring – my doc is very caring and concerned – but if you have it, it is most likely going to be getting worse and the box of tools to fight it are rather limited at this point. Until you start showing some bigger symptoms, they may want try to rule out other things that are simply and cheap to do (i.e. stop drinking caffeine or diet drinks) before resorting to MRI, Evoke Potentials, etc. Still, try to insist on an MRI and, if he won’t do it and if you have good insurance, consider going to the ER and complaining about dizziness and tremors, and you will get your MRI and, possibly, a spinal tap. (Mine was negative, but it can take a while for MS to show up there.) Of course, if you get the DX, then you have to decide what you want to do about it. In some ways, being in denial in the early stages is kind of nice, as once you get the DX, you get welcomed to the world of Solumedral, DMD’s, etc.
But, the sooner you get the dx, the sooner you may be able to start treatment. There is a new drug that may be coming out later this year; there are some interesting results coming from CCSVI research; and stem cell treatment offers a potential cure of the disease (but is a tad bit expensive and has a difficult recovery period). I, obviously, wanted to know what was going on, but even though I suspected it was MS, it is still a shock to actually see de-myelinization of your own brain!