Low-Level Laser Therapy (LLLT) Guidelines

Introduction to LLLT

The American College of Physicians suggests that LLLT has limited evidence supporting its use for chronic low back pain and wound healing, with moderate evidence for pain reduction in rheumatoid arthritis, but insufficient evidence for most other conditions 1

Low-quality evidence shows LLLT slightly improves pain compared to sham laser treatment in patients with chronic low back pain 1
One RCT showed LLLT slightly improved function compared with sham laser in patients with chronic low back pain 1
Low-quality evidence showed that combining LLLT with NSAIDs significantly decreased pain intensity and moderately improved function compared to sham laser plus NSAIDs in acute/subacute low back pain 1
The American Society of Clinical Oncology recommends LLLT for patients receiving high-dose chemotherapy or chemoradiotherapy before hematopoietic stem cell transplantation to reduce incidence of oral mucositis and associated pain 2

LLLT is generally well-tolerated with minimal adverse events reported, according to the American College of Physicians 3
The evidence quality for LLLT is limited by small trial sizes, heterogeneous outcome measures, varying types of lasers and doses, and possible language or publication bias 3

LLLT should be considered only after conventional first-line treatments have been tried, and treatment protocols vary widely between studies, making standardization difficult 2
The technology requires specialized equipment and training, and cost-effectiveness compared to other interventions remains unclear 2