This is really more of a curiosity question than anything. It's a bit strange and I've always wondered what these were.
Ever since I can remember, I've had at least one or two of these small, slightly raised, pinkish-red bumps on my hands. They do not cause any discomfort whatsoever and they blanch when pressure is applied. But the strangest thing is that they go away and appear on other places on my hand! This is actually why I asked the question in the first place. It is so odd! For a little while I may have a red spot on my third knuckle, but then it will go away and one will appear on my pinkie instead.
Also, they only appear on my knuckles and finger joints, and never in large numbers.
I've attached an image showing my two current red spots. One of them is not visible in the picture. They almost look like acne in the picture, but they do not in real life. They are more...er...flush with the skin? I don't know how to explain this, but it is not acne nor does it resemble acne.
Anyway, thanks!