First day I learned I was cutting Cherry trees all day in the heat by myself ,couldn't get any help they hid from work, and I kept wiping my face and eyes with hands all day in the high heat and humidity! Do I need to tell you the next day an Ivy rash was all over me, my face and 2 closed puffy eyes! I learned fast and always always look and act accordingly.Cold water to close your pores. Then I use dish detergent several times, then a tempid water rinse. Don't open your pores.
My grandmother used to wipe the effected areas with kerosene before soap washing. She raised 13 children on a farm.
Not so bad as friends, some who used the leaves to wipe themselves.
I learned at about PI as a 7 YO. Crawling up to a stream to sneak up on native brook trout. Wearing shorts and T-shirt. It was a miserable summer vacation thereon.
I learned to identify it, and carry some soap/detergent with me in the woods. Animals/dogs/cats can also spread the PI love to you.