I have small cracks in the skin on my left middle finger, on the back side of the last joint before the nail. It started out with a small crack in the skin that took a long time (more than a week) to heal. Then more and more of such parallel wounds appeared, as if they would be finely cut, refusing to heal, and itching. I applied a greasy facial and body cream, desinfected, but it didn't really help. I went to the pharmacy, got a gel that helped for a few days, and some of the wounds healed - but then next to them, new ones appeared, wider and deeper, and they refuse to heal. As you can see in the picture. The skin is hardened, it itches (and my finger is a bit swollen). Is there anything I can try out, home-remedy wise, to heal this?