Mouth diseases.

Among the problems that may manifest itself in the mouth can be highlighted various kinds of sores and tumors, such as canker and cancer. The lining of the mouth or palate may also experience changes in color. Other problems include bad breath and diseases of the salivary glands.
Canker sores are small sores that appear on the oral mucosa
although the cause is unknown, it appears that the nervous character has a role in its development, for example, a student can leave canker in the mouth during a final exam. A canker is a round white spot with a red halo. It is common for the sore is formed on the soft tissue, particularly in the interior of the lip or cheek, on the tongue or soft palate and sometimes in the throat. Canker small (less than 12 mm in diameter) usually appear in groups of two or three, usually ten days to go away without treatment and leave no scars. Canker older is less common, may be irregularly shaped, they need several weeks to heal and often leave scars.