question: I've been seeing my dentist about sores in my mouth. They started on my gums but they now also go down my throat.  He thinks I may have an autoimmune disease.  He sent me to the UW oral medicine clinic and they want me to have my eyes checked since I also have a history of blisters on the insides of my eyes.  I have a history of lots of sensitivities and allergies.  I think these are possibly the result of just another sensitivity that I haven't yet figured out what it is.  I really don't want to spend hundreds of dollars and hours of time to do lots of tests to get zero answers.  I've done that too many times before.  Eventually I always find out that it's some food or substance that I don't tolerate.  Oral medicine said they want me to continue checking it out anyway.  I don't want to.  How important is it to have this checked out.