I'm assuming this may be a minor problem. About five days ago, my right index finger felt very slightly odd near the bottom of the tip joint/middle bone area (the "palm side" of my finger). I can't describe it any more than that; I just knew something wasn't right. Then I noticed that it was slightly swollen. I would never have noticed this if it didn't feel slightly weird. (The weird feeling is also rarely noticed, or is gone entirely.)
As the days passed by, I nearly forget about it, but the area under the middle bone turned a little red. And today, I look at it and see little pinprick-sized dark red dots beneath the middle bone. There are about nine of them, more easily seen when I press upon the skin to make it white. The slight swelling still exists, but there is no itching, loss of feeling, bumps, or anything that may hint a bug bite, rash, etc.
What could it be? I don't recall any recent harm done to any part of my body.