User:Mr. Ibrahem/Mouth ulcer

A mouth ulcer is a sore in the mucous membrane which lines the mouth. They may appear red or white in color. Often pain occurs which may result in dehydration from decreased drinking. Some types may occur recurrently.

Most cases are due to local trauma or aphthous stomatitis ("canker sores"). Other causes include infectious diseases, autoimmune diseases, and mouth cancer. Non painful cases may occur due to syphilis, lupus, or cancer. Diagnosis is based on symptoms, examination, and possibly biospy.

Treatment is directed at the underlying cause. Avoiding salty or acidic food may be recommended. Lidocaine may be applied to help with pain. Mouth ulcers are common. For example about 20% of people have aphthous stomatitis.