I suspect that even the venerable Squad might require a bit more information here.
Is the pain in specific joints (if so, which ones) or, for example, is it just your skin which is super-sensitive?
Is the pain present all of the time, just when you touch something or only when you bend your fingers?
Is it an aching type pain or a tingling one?
Have you got any other medical conditions? Are you taking any medications?
For what it's worth (while we're waiting for more information and/or for Sqad to arrive), here's what the NHS website has about hand pain:
http://www.nhs.uk/conditions/hand-pain/Pages/Introduction.aspx