The use of red light therapy (RLT) is mainly associated with skincare. However, red light therapy is beneficial in treating other conditions like tendonitis. Wavelengths of red light can stimulate cells, helping with pain management and treatment of damaged tissue.
Many people have limited options when dealing with injuries and inflammation. The main ones are medication, physical therapy, or, in severe cases, surgery. RLT is gaining popularity due to its convenience and painlessness.
Existing scientific research and patient reviews support using RLT in managing various health conditions, including inflammation and tendonitis. Our technical team has developed red light therapy devices to help with tissue repair.
Let's look at how red light therapy can help treat tendonitis tissue. We will explain tendonitis, how to manage the condition using red light therapy, and much more.

Tendons are strong tissues that connect muscles to the bones. An inflammation of the tendon makes it swell, causing pain and discomfort. In medical terms, it is called tendonitis.
Another condition that affects tendons is tenosynovitis. It causes inflammation of the lining of the tendon sheath around a tendon. When suffering from tenosynovitis, the inflammation is only on the sheath. However, both the tendon and the sheath can cause inflammation simultaneously.
The cause of tendonitis and tenosynovitis is not clear. Both conditions can arise after an injury or strain due to overuse or strenuous exercise tendinopathy.
Tendinopathy is any condition that causes swelling and pain to any tendon or ligament. Tendonitis can also occur in people with rheumatoid arthritis, diabetes, or other infections.
Tendonitis can occur in any place where the muscle connects to the bone. However, the most common types of tendonitis conditions include:
Its medical name is medial epicondylitis, also known as baseball elbow. The condition causes pain on the inner side of the elbow down to the wrist on the palm side of the forearm. The pain is more prominent on the tendons that bend the wrist toward the palm.
Medically, the tennis elbow is known as lateral epicondylitis. It causes pain in the tendons connecting the forearm muscle to the elbow.
A type of tendinitis affecting the tendons of the Achilles tendon connecting the calf muscle and the heel bone.
It is the most common type of tenosynovitis. The condition results from swelling of the tendons sheath connecting the thumb to the side of the wrist.
Tendonitis pain on the patellar tendon is commonly known as jumper's knee. It can result from an injury to the tissue connecting the kneecap to the shin bone.
It causes pain in the shoulder blade connecting tissue. Swimmer's shoulder tendonitis makes you experience upper back pain when doing simple things like moving your arm or turning your neck.
Damaged tendons on the wrist may result from swelling of the tissues connecting the muscle to the wrist. A patient with arthritis may also show symptoms of tendinitis on their wrist.
Diagnosing tendonitis
Your healthcare provider will first ask about your health history to gather facts. The physician will conduct a physical examination to determine the extent of injury and pain. You may have further tests to investigate other problems that cause the symptoms. The test may include:
Joint aspiration: Healthcare providers draw a small amount of fluid from the joint via a needle. The fluid helps to test for gout or other infections.
X-ray: Tendons aren't visible on an X-ray image. However, an X-ray can show bone. The test can check for osteoarthritis.
Treatment for tendinitis includes at-home remedies, off-the-counter drugs, injections, and medical procedures. The treatments aim at pain relief and repair of tendon tissue. They are:
Red light therapy is embraced by many worldwide in the management of tendonitis. It helps minimize the swelling, pain, and stiffness of tendinopathy. RLT is also known as photobiomodulation or low-level light therapy (LLLT).
The therapy involves using specific wavelengths of red and near-infrared lights. Red light therapy uses light-emitting diodes (LEDs) to produce the wavelengths of red light. When you expose red light to the skin, it penetrates into the tissue underneath.
The absorbed light photons trigger multiple cell processes that help damaged tissue heal faster. RLT, therefore, provides a natural and non-invasive treatment option for pain management.
Here are the benefits of using red light in the treatment of tendonitis:
The use of red light has the advantage of combining it with other treatments. You can also use red light therapy to help heal surgery scars while repairing your tendons.
Red light therapy equipment tends to come as a device or panels. A device allows you to focus the wavelengths of red light on specific body parts – wherever tendonitis pain is most prevalent.
The RLT panels, on the other hand, can expose a larger skin area on your body. The devices are versatile in their use.
Any medical treatment shows varying results among individuals. Contributing factors are many. They include underlying medical issues, race, gender, age, and physical fitness. So, how long does tendonitis take to heal?
Usually, visible results when using red light therapy for tendonitis can take two to four weeks or longer. The length of sessions and frequency depend on the device's capability. However, we strongly advise against over-exposure.
Currently, there are no conclusive studies on the use of red light therapy. There is a need for systematic reviews on the placebo use of red light wavelengths.
Red light therapy is relatively safe and also non-invasive. Knowing the potential side effects and precautions associated with the treatment is essential, like any other medication. It's crucial to undertake red light therapy properly in the right way to minimize potential risks.
Some patients report the effects of mild skin redness, discomfort, or irritation in the affected area. These are temporary side effects that subside soon after treatment.
However, talking to a healthcare provider before using any new treatment is always best. The same applies to red light therapy. A doctor will guide you on personalized therapy requirements and schedules.
The use of red light therapy has the potential to help millions of people repair damaged tendons and treat tendonitis and ligament issues.
Red light therapy helps with tendonitis in several ways. They include pain relief, reducing inflammation, and improved healing time. However, it's important to state that healing is gradual, and results vary between individuals.
Although red light waves can be a powerful therapeutic tool, we recommend following a comprehensive approach. You can combine it with rest, physical therapy, a healthy diet, and other supportive treatments to manage tendonitis.
The key to achieving the best results during red light therapy is consistency. You must also ensure you use the red light therapy device correctly and according to instructions.
You can explore the potential benefits of red light therapy for tendonitis using the RedliteX Pro series panels .
1. John Hopkins Medicine (2025). Tendonitis. Sports Injuries – John Hopkins Source
2. Cleveland Clinic (2025). Tendonitis – Cleveland Clinic Source