My hands look completely normal but when they get wet for a long period of time (doing dishes, going swimming, or taking a shower), thick, tender bumps form on my hands. The bumps cover my entire palm and are on both hands, I actually think they may be on my fingers too, but if so, they are very small. The bumps vary in size. The bumps stay on my palms and slowly fade away as my hands dry out (This takes about 20 minutes at the most). The bumbs are hard, almost callous like, slightly itchy, and mildly painful, especially in the creases of my hands when I try to bend my hands. Once my hands have dried out my palms look slightly dried out, with some flaking present. Please help me figure out what's wrong, its very embarrasing and I'm curious to know if it is contagious.