My brother & I always got it bad when we were kids - eyes swollen shut, 75% of our bodies in a blistered rash. We tried every remedy we would hear of - jewelweed, calamine, oatmeal, rubbing alcohol, clay, benedryl, 1/2 pound of salt, you name it, we tried it.
Poison Ivy
Poison Oak
Poison Sumac
Information about poison ivy, oak, sumac and the skin rashes they cause