canker sores are sores or lesions were injured in the oral cavity, and in classified as peptic aftosa or herpertiformis. aftosa stomatitis usually heals sendiridan minor is the most common form. aftosa stomatitis usually occurs at age 10-14 years and can recur at any time. Events are meungkin associated with factors or other diseases, including injury or trauma on the inside of the mouth or tongue ( eg accidentally bitten, use of dentures ) when chewing food, changing levels of hormones of the body, deficiency of vitamins ( eg vitamin B12 and folic acid ), food allergies, stress or anxiety disorders. however, in some cases, there are times when stomatitis is one symptom of another disease, Crohn's sepertipenyakit, seliak, HIV infection, disease behcet or possibly cancer. or can be caused by certain drugs or may be genetic factors advice - Avoid exposure of peptic terhdap foods that cause pain and aggravate symptoms, such as foods rich in spices, fr...