They don't come on the palmar surface of my fingers, just the sides and tops... and never on
the back of the hand, only just to the joint
where the finger meets the hand (MCP joint
). They measure between ~2mm and ~8mm in size (usually 3-4mm), are red and slightly raised, and aren't filled with fluid. Clumping around the joints is more likely than on the shaft of the phalanges. They're painful (well... uncomfortable) to touch or rub, and usually disappear within a couple of weeks.