If you don't have any other symptoms with this chances are you have a pinched nerve. Pinched nerves gives you the feeling of numbness and tingling. It contributes the stinging by tiny pricks inside the skin that feel like electrical shocks.
Why Is Stinging And Numbness In Left Arm?
Yes a pinched nerve is a possibilty-or could be related to carpal tunnel also,or arthiritis-they give you the same symptoms-but youd be better off checking on web md