This morning, I pulled out some Virginia Creeper. I wasn't worried since it had five leaves but a couple of hours ago, I started getting welts and bumps all over my arms and on my legs, too. It was a really long vine and I had to really wrestle it, lol. So when I noticed the rash appearing, I got online and found pictures of it, then this link. I can't believe I've never heard of it! : (