I get mouth ulcers on the sides and tip of my tongue all the time. Sometimes they are only a little bothersome, but other times they are extremely painful, preventing me from talking, eating, drinking, etc. I am wondering if anyone else frequently deals with mouth ulcers, commonly referred to as canker sores. Is there anything that helps clear them up? What do you suppose the cause is? I have read that people with compromised immune systems often get them and I have been ill quite a bit this past year, but I'm not sure. I'm actually sick right now with a bit of a sore throat and very clogged sinuses. Blah would really love summer now!!