What is mucositis?
Mucositis is the swelling, irritation, and ulceration of the mucosal cells that line the mouth and digestive tract. It can be a very troublesome and painful side effect of chemotherapy or radiation. Mucositis is an inflammation of mucous membranes in the mouth. The terms “oral mucositis” and “stomatitis” are often used in place of each other, but their meanings are different.