Chronic pain means pain that has lasted longer than about three months. It is not one condition but a symptom with many possible causes, from joint wear and old injuries to nerve problems and conditions that need medical treatment. That is why this page starts with a boundary: light therapy is not a substitute for finding out why the pain is there.
What the research looks at
Photobiomodulation, the scientific name for red and near-infrared light therapy, has been studied in several specific pain conditions, including neck pain, knee osteoarthritis, lower back pain and jaw pain. Most studies used lasers or LEDs at set doses under clinical supervision.
Results are mixed. Some small trials report lower pain scores over a few weeks; others find no difference compared with a sham device. Reviews generally rate the evidence as low to moderate quality, with small samples and short follow-up. Findings in one condition, wavelength or dose do not automatically apply to another.
What it is not
- It is not a treatment for any pain condition, and our systems are not designed or tested for that purpose
- It does not replace a pain management plan from your doctor or physiotherapist
- It should never delay getting pain checked
When to see a doctor
See a doctor for pain that keeps getting worse, wakes you at night, comes with unexplained weight loss, fever, numbness or weakness, or follows an injury. Do not stop or change prescribed medication without medical advice.
Related reading
For the wider research summary, see our pages on pain, joint stiffness and muscle recovery.
