itchy, swollen, red knuckle
Yesterday on my index finger, between the knuckle and the first bend of my finger, the skin was itching slightly. I didn't think much of it. Today when I woke up I found the same area swollen, red, and more persistently itchy. It hurts when I bend my finger because of the swelling. I have no idea what it could be... the only thing that worries me was that I was in a park last night and ran my fingers through the sand... but then again, it was itching before that point in the day. I don't think it's an insect bite, as I can't identify the bite spot itself and it's not a defined bump, just an inflamed section of my finger. Any info on what this could be/how I can make it go away would be really appreciated.