What to Expect
- Mouth pain.
- Mouth sores.
- Bleeding, if you are getting chemotherapy. Radiation therapy usually does not lead to bleeding.
With chemotherapy, mucositis heals by itself when there is no infection. Healing usually takes 2 to 4 weeks. Mucositis caused by radiation therapy usually lasts 6 to 8 weeks, depending on how long you have radiation treatment.