I have what appeared to be dry skin on my thumb from washing my hands over and over. It cracked and was painful. I've had this happen before, and by dabbing a bit of superglue on it to prevent the cracks from deepening, they just healed right up. I stopped using the superglue because it seemed to come off and take more skin with it, and then it seemed to heal up, but washing hands as much as I do, it started right up again. I have used chap stick and other things to keep it moist. It goes right up to the edge of my nail. Now it has a pink ring around the edgeand looks a little puffy. and the irritated part is about the size of a dime. I have no idea what it is.