Mucositis refers to the mouth or gut being sore and inflamed, which is a common side effect of chemotherapy and radiotherapy for cancer. Symptoms typically begin about one to two weeks after starting cancer treatment and, besides a sore mouth, include mouth ulcers, difficulty swallowing, eating, or talking, a dry mouth and lips, diarrhea, and bleeding from the bottom. While mucositis is usually painful, it can be treated in various ways, one of them being low-level laser treatment.
According to studies, cancer patients (both children and adults) treated with LLLT wavelengths between 632 and 970 nm had a 62% reduced risk of severe mucositis on the seventh day of evaluation. The studies reported that LLLT may resolve oral mucositis (OM) lesions in adult patients undergoing cancer therapy and potentially decrease the resolution time of OM lesions by approximately 4.21 days.