I have a small colourless lump that I can move around on the back of my hand it is only painfull when I squeeze it but it is that small I dont want to bother my Doctor with it. It  is in the middle not near the wrist, it is by the small bones in the back of my hand but not attached.
Hi, From history it seems that you might be having Wrist ganglion giving this problem. Nothing to worry, it is harmless. Consult surgeon and get examined. Ok and take care.