Asking for my son, 32yrs old. Very sensitive skin. Have to use clear & free detergents. He's had hives before due to nerves. Been a long time though. Now, he has a very serious rash breaking out on his right big toe, and one next to it, and part of top of foot. Came home yesterday in the rain, with new tennis shoes on his feet soaked. And this rash has broke out since. Turning into blisters, like poison ivy. Using calimine lotion, soaking in bleach water. What can we do? He's miserable.