I just got done doing some work outside. I was doing some shoveling out in the cold, and I wasn't wearing any gloves. I did this for about an hour. Then I went and fed the horses. (I am allergic to hay). I went inside, went to play some guitar and noticed my middle finger was swollen. It doesn't hurt, it's just puffy. If anyone has any idea what it is give me an idea. I didn't get bit by anything. I don't see any fang marks or anything. I warmed my hands up when I got inside by putting them under hot water... so that might be it. other than that, I have no clue why it's so puffy.
maybe contact with the hay.sounds like a small reaction to something.