Well, I never had poison ivy. If you ever get it, you are much more susceptible to it the next time. You can dig up a poke weed and there is a sort of tuber on the root. Soak this in water and rub the water on the rash. Poke weed is a diuretic, which means it draws the water out of your body, same as salt. You can't get poison ivy from someone else who has it, but you can contract it from anything that poison ivy has touched. So if you have been out in the field and walked through it, you need to wash your clothes separately, as it will contaminate other folks clothes.