Common pre-cancerous conditions that occur in the mouth are Leukoplakia,Erythroplakia and Oral ... tonsils and soft palate). These viruses are passed from person to person through sexual contact.

Erythroplakia is seen most commonly on the soft palate, floor or mouth or buccal mucosa. Some erythroplakias are associated with white patches, and are then termed speckled leukoplakia (Fig.