I have noticed that the knuckles on both my middle fingers swell often. If I knock on a door, or anything for that matter, they turn red and swell, causing pain. It is not severe pain, but I am concerned because it seems to be getting worse. I can't bend my middle fingers completely without them swelling and hurting. The swelling seems to be lasting longer now, and my knuckles stay purple now, even without the swelling. My grandmother has RA, so I am wondering if I should see a doctor about this even though it doesn't cause severe pain. I have read about RA and I don't want to take a chance waiting too long and missing the chance to have it caught early. Thanks for any help in this matter.