Most cases of poison ivy rash go away on their own within a couple of weeks. (health.com)
My son Nate got the WORST break out of poison ivy rash earlier this spring. (mommieswithstyle.com)
All of this is analogous to allergies, and the varying degrees of individual sensitivity to what the body perceives as «alien invaders» — pollen, dust, the oil from poison ivy plants, etc.. (fieryfoodscentral.com)