Alas! I have determined what is this monster that has turned my life around.....I have never been so miserable. I knew it wasn't poison ivy and I grabbed it with two fingers by the root and tossed it. I washed my hands thoroughly, but not 24 hours later my forearm started iching and swelling. It moved to both arms, hands and legs. I have big blisters the size of half dollars that ooze...if I could get out of my skin I would crawl out! Had to go to the doctor and am on steroids and artibiotics