Also known as Oral Ulcer and Mouth Ulceration
A mouth ulcer (also termed an oral ulcer, or a mucosal ulcer) is an ulcer that occurs on the mucous membrane of the oral cavity. More plainly, a mouth ulcer is a sore or open lesion in the mouth. Mouth ulcers are very common, occurring in association with many diseases and by many different mechanisms, but usually there is no serious underlying cause. The two most common causes of oral ulceration are local trauma (e.g. rubbing from a sharp edge on a filling) and aphthous stomatitis ("canker sores"), a condition characterized by recurrent formation of oral ulcers for largely unknown reasons. Mouth ulcers often cause pain and discomfort, and may alter the person's choice of food while healing occurs (e.g. avoiding acidic or spicy foods and beverages). They may occur singly or multiple ulcers may occur at the same time (a "crop" of ulcers). Once formed, the ulcer may be maintained by inflammation and/or secondary infection. Rarely, a mouth ulcer that does not heal for many weeks may be a sign of oral cancer.Source: Wikipedia
The most common causes of mouth ulcer are aphthous ulcer, mucositis, and cold sore. Other possible causes, such as herpangina, are more rare.
Within all the people who go to their doctor with mouth ulcer, 63% report having fever, 35% report having sore throat, and 33% report having mouth pain.
Patients with mouth ulcer often receive biopsy, diagnostic procedures on nose; mouth and pharynx, excision of skin lesion, incision and drainage and other therapeutic ear procedures .
The most commonly prescribed drugs for patients with mouth ulcer include nystatin topical product, aluminum hydroxide / magnesium hydroxide, acyclovir, benzocaine topical, valacyclovir (valtrex), cefprozil, chlorhexidine topical, ferric subsulfate topical, mumps vaccine, tolmetin, clotrimazole, gentian violet topical and dacarbazine .
Groups of people at highest risk for mouth ulcer include age 5-14 years, age 1-4 years and age < 1 years.