Managing mouth sores
Oral mucositis during treatment
The short version
Some chemotherapy and radiation treatments can irritate the lining of the mouth, causing sores, dryness, or sensitivity, sometimes called mucositis. Good oral care before and during treatment can help.
Some treatments irritate the lining of the mouth, leading to sores, dryness, or sensitivity — sometimes called oral mucositis. A dental checkup before starting treatment, if time allows, and consistent oral care during treatment can help reduce severity.
- Rinse with a gentle salt-and-baking-soda solution as recommended by your team
- Use a soft-bristled toothbrush and avoid alcohol-based mouthwash
- Choose soft, bland, room-temperature foods when your mouth is sensitive
- Stay hydrated, and ask about products for dry mouth if that's a concern
When to reach out
Contact your care team if sores make it hard to eat or drink, or if you notice signs of infection like white patches or increasing pain.
Questions you may want to ask
Should I see a dentist before starting treatment?
What can I use for pain relief in my mouth if sores develop?