Tuesday I was cutting and packing slips of heart-leaf Philo vine to share and apparently brushed against a cut vine with my arm, getting sap on my arm. I was trying not to do that, and washed about 5 times during the process of taking the cuttings and packing them, but didn't think I'd touched anything higher than midway to my elbow. Thursday, this spot turned red and itchy. Raised blisters showed up over the weekend.
Might as well share a pic to help make this suffering educational. This is as itchy or more itchy than poison ivy. Since it's been a couple decades since I had PI, it's hard to compare.
Philodendron rash:
