There should be a detail history of your symptoms e.g. your profession, H/O recent trauma etc.
However you might be suffering from Carpal tunnel syndrome
occurs when the median nerve
becomes pressed or squeezed at the wrist. As a result, the hand and wrist may experience:
(may radiate up the arm)
The carpal tunnel receives its name from the 8 "carpal" bones in the wrist. The carpal "tunnel" is a narrow, rigid passageway of ligament and bones at the base of the hand that houses the median nerve and tendons. The median nerve runs down the forearm into the hand controlling sensations to the:
* thumb (palm side)
* fingers (not the little finger)
* hand muscles (impulses controlling finger/thumb movement).
BUT IF IN DOUBT GET YOURSELF RULED OUT FROM ANY CARDIAC PROBLEM.