Mouth ulcers are painful round or oval sores that form in the mouth, most often on the inside of the cheeks or lips. They're usually white, red, yellow or grey in colour and are inflamed (red and swollen) around the edge.
Although mouth ulcers can be uncomfortable, especially when you eat, drink or brush your teeth, they are usually harmless.
How common are mouth ulcers?
Mouth ulcers are very common, particularly in women and young adults. Most people will have one or two a year.
What causes mouth ulcers?
Most minor, single mouth ulcers are caused by damage to the mouth, for example by accidentally biting the inside of your cheek while eating, or from a sharp tooth, food or filling.
The cause of a recurrent mouth ulcer is not always clear,
Common Causes are:
How to treat mouth ulcers
Common Treatment for mouth ulcers are:
Most mouth ulcers heal within 10-14 days without causing any lasting problems, although severe ulcers may last for several weeks and could potentially leave a scar.
Can mouth ulcers be prevented?
The following may help reduce your risk of developing mouth ulcers:
Most mouth ulcers will clear up by themselves within a week or two. You need to see your doctor or dentist if the ulcer gets worse or lasts for longer than three weeks, or if you develop ulcers regularly.