Oral mucositis
Current evidence on the safety of low-level laser therapy for oral mucositis shows no major safety concerns. Evidence on efficacy is adequate in quality and quantity.
https://www.nice.org.uk/guidance/ipg615
Lymphadenopathy
Findings of the trial demonstrated significant benefits of complementary LLLT for relieving symptoms and improvement of emotional distress in breast cancer patients with lymphedema.
https://link.springer.com/article/10.1007/s10103-019-02798-1
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719569/
Peripheral neuropathy
https://ascopubs.org/doi/abs/10.1200/jco.2012.30.15_suppl.9019