Hiii everyone, what’s up with my hand ?

Okay sooooo.. i’ve had this for a very long time now. My hand is perfectly fine and functional. The area does not itch, irritate, peel off at all, or spread anymore. I wasn’t born with it and i don’t recall when it exactly started but i know i’ve had it since elementary. I’ve been to doctors and they couldn’t even tell me what it was. i’ve tried prescribed eczema cream and it never worked whatsoever. I know it’s not eczema.. i do notice when my arm loses circulation when laying on it or something, the pins and needles only run through up that side of my arm and hand, up to my pinkie. I’m not too worried about it since it doesn’t hurt or anything, but if it is something serious Oh boy!