I am so sorry for you Johnny and the other person who posted! This proves that some info on the web is not true. I found several websites that stated you cannot get poison ivy in mucous membranes. It is very uncommon because scientifically the mucous layer would shield or dissolve the oil, but unfortunately it is possible. I am curious as to how you are dealing with the rash inside your mouth as I have never personally known anyone to have it there. [email protected]