Mouth ulcers are small, painful patches or lumps inside your mouth.
Mouth ulcers usually heal within 2 weeks. To help ease the symptoms, avoid foods that may damage or hurt your mouth like spicy, salty or crunchy food.
The main symptom of a mouth ulcer is a small, painful patch or lump in your mouth.
Page last reviewed: 09/01/2018
Next review due: 09/01/2021