Poison ivy contains a chemical compound called urushiol. It isn’t an inherently harmful chemical in and of itself, but it causes an allergic reaction in the vast majority of people. The allergy is so super common that it’s barely even considered as an allergy.
Fun fact: Years ago, the TV show Mythbusters wanted to test folk remedies for poison ivy, and they found out much to their surprise that most of their cast was not allergic.
It is an inflammatory/allergic response to the oil on the plant *(urushiol*) that creates the rash.
Tips for you and others:
*The oil can last for over a year on clothing/footwear unless washed.
*The rash does NOT spread by scratching it. Only the oil from the plant can spread the rash.
*You can NOT spread the rash to others unless the oil is still on your skin/clothes.
*If you wash your skin thoroughly quickly after exposure, it should prevent a rash.
*Do not burn poison ivy without careful consideration. It can get in to your lungs.
*Some people are not allergic to it at all!
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