Same here. For years I never had anything more than a mild rash, though I was usually careful. Then, about two years I broke out on one of my legs. It was hellish.
Then I went out to the hardware store and bought some weed killer. This is about the third year of my Poison Ivy Jihad and I’ve down to an occasional sprig here and there; I soak it with weed killer, and this gives me a good feeling.
Odd that sensitivity can develop so quickly. I used to get allergy shots, and they worked. The idea was that exposure would decrease the reaction. I guess it’s a matter of how much and when.
I’ve heard the Lyme’s disease works the same way; it’s not the bug that causes the problem but the immune system going awry.
I was spraying poison ivy myself, yesterday. Got a gallon of spray left over. I may have to hit it again this afternoon.
I learned how to kill the vines, cut through the stem close to the ground and pour straight weed killer or stump killer on the cut. That’ll kill it! Forget the spraying.