When is nutrition support in cancer recommended for oral mucositis?

Oral mucositis can cause soreness, ulcers, bleeding, dry mouth, and pain with chewing or swallowing. Spicy, acidic, rough, very hot, or strongly flavoured foods may become difficult to tolerate. A dietitian can suggest softer, nourishing options and suitable drinks while the oncology team treats pain and reviews mouth care. If swallowing is unsafe or oral intake remains too low, the team may discuss temporary tube feeding or another clinical option.

Report mouth pain early and use mouth rinses or pain medicines exactly as prescribed. Choose foods with a smooth texture and a temperature that feels comfortable, take small sips often if allowed, and avoid alcohol-based mouth products unless the team advises them. Ask whether a dietitian should adjust meals or supplements around treatment days.

Contact the treatment team promptly if pain prevents drinking, mouth bleeding does not settle, swallowing becomes harder, urine becomes much less frequent, or fever develops. Seek urgent help for breathing difficulty, severe swelling, or inability to swallow saliva.

Which mouth-care routine is suitable for me? What pain relief can I use before meals? Which foods, drinks, or supplements are least irritating? At what point would tube feeding or a specialist swallowing assessment be considered?