Conditions · FAQ
What should I do about mouth sores during chemotherapy?
Short answer
Tell your cancer care team promptly if mouth sores develop during chemotherapy. These sores can affect eating and drinking and may raise concern for infection. Do not start a new rinse without their approval. Supportive care may ease symptoms, but the plan must fit your cancer treatment. Results vary.
Chemotherapy and some other cancer treatments can damage the lining of the mouth. This irritation is often called oral mucositis. It can range from soreness to open ulcers that make swallowing, eating, or drinking difficult. Contact your cancer care team as soon as symptoms start, even if they seem mild.
Your team may check for infection, dehydration, or other problems. Follow their fever instructions closely. A fever during chemotherapy can need urgent care, especially when infection-fighting blood cells are low. Do not wait for an online visit if you have fever, chills, or cannot drink enough fluids.
Your team may recommend gentle mouth care, changes in food texture, or medicines for pain or infection. Results vary. Ask before using any prescription rinse, over-the-counter mouthwash, supplement, or numbing gel. Some products can irritate tissue or interact with your treatment. Telehealth care for mouth sores should be coordinated with your cancer team, not replace it. Never pause chemotherapy on your own.
Sources
Written by the Verra clinical team · Medical review pending
General information, not medical advice. If you're in crisis, call or text 988.