The link provided is from the Oncology Nursing Society (ONS), and is a guide for patients on how to manage oral mucositis. Mucositis is a potential side effect of chemotherapy and head and neck radiation, and can range from mild to severe. Mild mucositis can begin as a burning sensation in your mouth or throat or a sore throat, and progress to mouth and throat ulcerations. Self care and careful monitoring of your mouth, lips, gums, and teeth while receiving chemotherapy is very important.
The webpage link includes other patient teaching topics from ONS as well, including xerostomia and dysphagia.