et_mike

I had a friend in high school that was allergic to the metal alloy in his mouthpiece. When he played for extended periods of time the buzzing on the metal would cause irritation that almost looked like a rash in the shape of a ring on his mouth. I know it was an allergic reaction because his doctor told him so. He switched to a gold plated mouthpiece and never had the problem again. I doubt that is what you are experiencing, but I thought I would tell you anyway! Good luck.