By the RedLightPainLab Research Team · Published June 9, 2026 · Last updated June 9, 2026
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Red light therapy, also called photobiomodulation or low-level laser therapy (LLLT), can give short-term relief for rheumatoid arthritis. A Cochrane review found it reduced pain and morning stiffness and improved finger flexibility, mostly in the hands, with no side effects. It calms inflammation but does not control the disease, so use it alongside the medication your rheumatologist prescribes.
The short version
- Rheumatoid arthritis has the most direct red light therapy evidence of any arthritis, because most trials treated the hands.
- A Cochrane review found short-term cuts in pain and morning stiffness, plus about 1.3 cm more finger flexibility, with no side effects.
- It targets inflammation in the joint, which fits an inflammatory disease like rheumatoid arthritis.
- The benefit is short-term, so consistency matters; it does not slow the disease.
- It is an add-on. Keep taking the disease-modifying drugs (DMARDs) your rheumatologist prescribes.
Does red light therapy work for rheumatoid arthritis?
Yes, modestly and short-term. A Cochrane review pooled 5 randomized placebo-controlled trials (222 people), most treating the hands, and found that low-level laser therapy beat a sham device on three measures: pain fell by about 1.1 points on a 10-point scale, morning stiffness dropped by roughly 27.5 minutes, and tip-to-palm flexibility improved by about 1.3 cm. No side effects were reported, and the gains were short-term rather than lasting (Brosseau et al., Cochrane, 2005).
That makes rheumatoid arthritis one of the better-supported uses, especially for the hands. The honest limits: the effect is modest, it is short-term, and red light therapy does not slow or stop the autoimmune disease itself.
Why it suits an inflammatory disease
Rheumatoid arthritis is an autoimmune disease: the immune system attacks the joint lining, classically the knuckles (MCP joints) and middle finger joints (PIP joints), causing swelling and long morning stiffness. Red and near-infrared light is absorbed by cytochrome c oxidase in the mitochondria, which raises ATP and helps calm local inflammation and improve blood flow (Hamblin, 2018). Because the problem in rheumatoid arthritis is inflammation, an anti-inflammatory effect is a sensible target, which may be why the hand trials showed a clearer benefit than the wear-and-tear of osteoarthritis.
Where to aim it
Treat the joints that flare. In rheumatoid arthritis that usually means the knuckles, the middle finger joints, and the wrists, and sometimes larger joints like the knees. The good news for the hands is that finger joints sit near the surface, so both red and near-infrared light reach them; for the wrists and larger joints, lean on near-infrared for a bit more depth. Our hand arthritis guide covers the finger joints in detail.
How to use red light therapy for rheumatoid arthritis
Keep it simple and consistent, and treat it as an add-on to your prescribed care.
- Choose a device with red and near-infrared light; a small panel or a flexible wrap suits hands and wrists.
- Position the joint 6 to 12 inches from a panel, or wrap the device around the hand or wrist.
- Treat 10 to 15 minutes per area, about 4 to 5 days a week.
- Treat during or after a flare, and cover both sides of the joints if you can.
- Keep taking your DMARDs and any other prescribed medication, and keep up gentle movement.
- Give it 4 to 6 weeks, then reassess with your clinician.
Is it safe with rheumatoid arthritis?
The Cochrane review reported no side effects, so it is generally low risk. The key safety point is specific to rheumatoid arthritis: do not stop your disease-modifying medication. Light therapy may ease symptoms, but only the prescribed drugs control the underlying disease and protect your joints from damage. Check with your rheumatologist before adding it, especially if you take a medication that increases light sensitivity, and wear eye protection with bright panels.
What does it cost?
Expect to pay out of pocket, since insurance in the US rarely covers it. For rheumatoid arthritis of the hands you do not need a large panel, so a small panel or a hand wrap is usually enough and keeps the cost down, which makes this one of the more affordable uses to try.
Choosing a device for rheumatoid arthritis
Prioritize a device with both red and near-infrared light and a form factor that fits the hands and wrists, a small panel or a flexible wrap, with third-party-tested specs rather than marketing claims. See our best red light therapy for arthritis shortlist and our full device rankings. As an independent site, our current overall top pick is the RLT Home TotalSpectrum. For the wider picture, see our guides to arthritis pain, osteoarthritis, and knee pain.
Frequently asked questions
Does red light therapy help rheumatoid arthritis?
Yes, modestly and short-term. A Cochrane review of 5 trials found less pain and morning stiffness and a small gain in finger flexibility, mostly in the hands, with no side effects. It does not control the disease, so use it alongside your prescribed medication.
Can it replace my rheumatoid arthritis medication?
No. Only disease-modifying drugs (DMARDs) control the autoimmune disease and protect your joints. Red light therapy is a symptom-relief add-on. Never stop prescribed medication without your rheumatologist.
How often should I use it for rheumatoid arthritis?
About 4 to 5 days a week, 10 to 15 minutes per joint, treating the knuckles, finger joints, and wrists. The benefit is short-term, so consistency over several weeks matters most.
Does it reduce joint swelling and stiffness?
The Cochrane review found reduced pain and morning stiffness and improved finger flexibility. Effects on swelling were less consistent. Treat it as help with pain and stiffness, not a cure.
Is red light therapy FDA approved for rheumatoid arthritis?
Red light therapy panels are FDA registered, not FDA cleared or approved. Registration means the device is listed as a general wellness product. A few medical LED or laser devices carry 510(k) clearance, but consumer panels do not.
References
- Brosseau L, et al. Low level laser therapy (Classes I, II and III) for treating rheumatoid arthritis. Cochrane Database of Systematic Reviews. 2005;(4):CD002049. Cochrane
- Hamblin MR. Mechanisms and mitochondrial redox signaling in photobiomodulation. Photochemistry and Photobiology. 2018;94(2):199-212. PMC
Medical disclaimer: This article is for informational purposes only and is not medical advice. If you have rheumatoid arthritis, do not stop prescribed medication; consult your rheumatologist before adding any new treatment.
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