Yikes looks nasty. I remember one time, middle of summer I crashed my mountain bike into a bunch of poison oak. Tumbled and slid down the hill until my shirt hooked on a poison oak stump (that left a nasty poison oak stump scratch from hell). I was covered and as I was struggling to get back up the hill with my bike and up onto the trail a co-working reached down and we grabbed each others forearms and he pulled me the last little bit up to the trail. Two days later he had a perfect, rosy red, blistered hand print on his forearm.