I have two of the symptoms you mention, and maybe I can supply some information that you can research to learn why you have numbness in your fingers.First, there is a technique that Neurologists perform named, " Elec-tro-my-og-ra-phy"(EMC). Doctors place electrodes on the wrists, elbows, ankles and applied small amounts of current to judge whether your muscles are functioning well. This technique foretold that I would have carpel-tunnel syndrome in future years.