Infrared and red light for rheumatism: what can you expect?

M Tan @ Sep 04, 2026

Rheumatism is not a single condition. It is a collective term for more than a hundred conditions affecting the joints, muscles, and tendons — from osteoarthritis to rheumatoid arthritis to fibromyalgia. What helps one person may do nothing for another.

That makes this question more difficult to answer than most. Below is what heat and Red Light Therapy may contribute, by type of complaint, and where the limits lie.

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Please note: this information is based on scientific sources, customer experiences and our own knowledge of light therapy. It is not medical advice. If you take medication, have a medical condition or are unsure, talk to your doctor or a specialist first.

First: have it investigated

Red Light Therapy is supportive and does not provide a diagnosis. With persistent joint pain, morning stiffness lasting longer than an hour, or joints that become swollen and warm, your general practitioner should be the first step.

Thuisarts.nl has clear pages about rheumatism in general, rheumatoid arthritis, and fibromyalgia. Read these first if you do not have a diagnosis yet.

Three types, three stories

Osteoarthritis: cartilage wear

The most common form. The cartilage becomes thinner, the ends of the bones move less smoothly against each other, and this causes pain and stiffness. Osteoarthritis cannot be cured — no treatment, including a lamp, can restore cartilage.

What can help is managing the surrounding symptoms. With a knee, where the joint lies just beneath the skin, this is more promising than with a hip, with centimeters of muscle in between. Read more about this in Red Light Therapy for knee complaints.

Rheumatoid arthritis: an inflammatory disease

Something different is happening here: the immune system attacks the lining of the joint. This is a systemic condition treated with medication.

Be cautious here. During an active inflammatory phase — when a joint is swollen, red, and warm — heat is generally discouraged; cooling is more appropriate. Consult your rheumatologist before using anything alongside your treatment.

Fibromyalgia: pain without joint damage

Widespread pain, fatigue, and sleep problems, without demonstrable damage to the joints. People with fibromyalgia relatively often report benefiting from heat, probably mainly through relaxation and improved sleep. We have two existing articles on this: Red Light Therapy for fibromyalgia and infrared lamps for fibromyalgia.

Liroma Portable Prime Red Light Therapy lamp aimed at a painful elbow — Joints that lie just beneath the skin — knees, elbows, wrists, and fingers — are the most suitable. The more tissue in between, the less light remains.

Heat or light: the difference matters here

With rheumatism, these two are often confused, but they do different things.

Infrared heat increases blood flow and relaxes muscles. This works well against morning stiffness and tense muscles around a painful joint. The effect is immediately noticeable and temporary.

Red Light Therapy works without heat. According to ICNIRP, near-infrared light from 810 to 1060 nm penetrates several millimeters into the tissue and is absorbed by the mitochondria; the mechanism has been described by Hamblin. You feel little from it, and the effect builds over several weeks.

For an acutely stiff morning: heat. For something you can maintain for months: light. They are not mutually exclusive.

Practical guidance

Frequency: four to five times per week. With rheumatism, consistency is everything — see how often to use it.
Duration: eight to twelve minutes per joint, with a maximum of twenty.
Distance: thirty to fifty centimeters. See the article about distance.
Bare skin, and with round joints, treat multiple sides separately.
Do not use on an actively inflamed joint without consulting your doctor.

What you can realistically expect

No cure. No replacement for your medication — never stop taking it on your own initiative.

What people who benefit from it generally report: less morning stiffness and getting moving more easily. Allow six to eight weeks before you can assess this; see how long it takes before you see results.

And some people notice nothing. That happens, which is why you can try it at home with us for sixty days.

Which device?

If the complaints affect one or two joints, a small, targeted device is the most practical option: the PrimeSpot or the Portable Prime. If multiple joints are involved, or your back and neck are affected as well, a panel makes more sense because you can treat larger areas in a single session.

If you mainly want heat for morning stiffness, take a look at the infrared heat lamps. Compare the models or use the product selection guide.

Sources

Red Light Therapy is intended to support the body's natural recovery and is not a medical device for curing conditions. Results vary from person to person. For rheumatic conditions, always consult your general practitioner or rheumatologist, and never stop taking prescribed medication on your own initiative.