numb/prickly mouse hand

[Fiddler]

It is called RSI, repetitive strain injury, and it can actually get pretty serious if you don't do anything about it. I had co-worker that had to have hand surgery and one that simply gave up working in the IT field. And no, I'm not kidding.

I don't know if this link is any good but you can read some about it here including some preventive measures. Try to take care of it before it gets more serious.