[Tobra]

If it moves with the tendon, it may be a little damage to the tendon or the beginning of a trigger finger, or a small fibroma. Lot of things it could be, definitely not Lupus.

Is it fluctuant or solid? Ganglion cyst is fluid filled extrusion off joint or tendon sheath, DO NOT hit it with a bible or any other large book. Try ice and anti inflammatory pills until you can see a hand guy. Sometimes the fluid is too thick to draw much out, that has been my experience. Sort of fun to remove, if you do your dissection meticulously, you can get it out looking like a balloon.