Very rare? Every time I touch it, I get a rash and itch that lasts for days, even weeks.. I've tried long sleeves, long gloves, etc. But within a few days of trying to clear it, my arms are covered with a rash.
What state are you in? There are some Creeper species in South and East that can cause a reaction. Yes it is rare when compared to frequency of Poison ivy, Oak and Sumac.
