I am an experienced gardener, yet l still find poison ivy every year while gardening.
Unfortunately l react 100% and every year l need medication, or l would itch myself uncontrollably.
My doctor has always prescribed a 5 /7 day regime of high dosage prednisone, which thankfully works almost overnight, giving me much needed relief.
Incidentally, just for your FYI. I have over the years tried all the over the counter ointments, salves, and other concoctions, and none of them worked for me..