What is a mouth ulcer?
Mouth ulcers are painful, clearly defined, round or oval sores that form in the mouth.
There are three main types of mouth ulcer, which are outlined below:
- Minor ulcers are the most common type of ulcer. They are small (2-8mm in diameter) and usually heal naturally within 10-14 days.
- Major ulcers are larger and deeper than minor ulcers, and usually have a raised or irregular border. A major ulcer is usually 1cm or more in diameter. This type of ulcer will heal more slowly, over a period of several weeks.
- Herpetiform ulcers form as multiple, pinhead-sized sores. The number of ulcers can range from 5 to 100. These tiny ulcers often fuse together to form larger, irregular shaped sores, which are extremely painful.
A mouth ulcer is a very common condition, and most people will have at least one in their lifetime.
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