there is a condition called small fiber neuropathy. i have a localized condition called peripheral s. f. n. only my feet. is this what you have, who knows. i would call it an electrical current running all over skin.
nerves are very delicate and lots of things can happen to them. lots of stuff on the web about neurological conditions. read several sites for complete information.
things that help this condition. wearing tight fitting clothing. over the counter anti-itch cremes. an over the counter product called neuragen. i should say things that have helped my condition. doctors tell me there is not much professional medicine can do.
there's a physical therapy treatment called anodyne infra-red light therapy. does not help me.
your problem could very well be something else, physical or mental.
clothing, creme, neuragen cheap to try.....can't hurt.
i really hope you can find something to help you.