I talked to the county nurse about all the pain in my hands, arms and shoulders... She talked to a doctor friend who is 95% sure I have tendonitis. :( Stupid manufacturing plant. He said if I keep doing crafts (crochet, cross stitch, hand sewing) it will get bad by the time I'm 40. So not cool. I only worked there for 6 months.
Look into peripheral neuropathy. That's what I have and it sounds similar to what you describe. It can be treated.