What Causes White Patches in the Mouth and Tongue?
Besides the contents of tobacco smoke, the actual temperature and drying effects alter the consistency of tissue in the mouth. This happens frequently with the practice of reverse smoking where the lit end is placed in the mouth and smoked. The effect of reverse smoking results in white patches or “callouses” caused by increased keratin production. The drying effect has been associated with a white or translucent covering or film on mouth tissues.
