Hi. Three days ago the joint closest to the end of my middle finger became very very painful. I don t remember hurting it all, but it feels injured. The pain is not dull but very sharp like a knife pain in the joint, whenever I bend that joint. I ve put medical tape on it to keep me from bending it and that definitely helps. However, I don t notice much of an improvement yet and am wondering what could have caused this? I don t notice any redness or swelling to speak of either.