A sore shoulder that catches when you reach into a cupboard, an Achilles tendon that protests on the first steps of the morning, or a knee that limits your usual walk can make even ordinary routines feel smaller. Laser therapy for pain is one of several non-surgical options that may help reduce symptoms and support recovery, particularly when it is chosen after a proper musculoskeletal assessment rather than used as a stand-alone quick fix.

At The Arthritis Clinic, treatment decisions begin with listening to what is painful, what has changed, and what you need to get back to doing. That might be working comfortably, playing sport, walking the dog, sleeping through the night or keeping up with family. Laser therapy can have a useful role, but the right role depends on the tissue involved, the stage of the problem and the wider rehabilitation plan.

What is laser therapy for pain?

Therapeutic laser, also called photobiomodulation or low-level laser therapy, uses specific wavelengths of light delivered to the affected area. Unlike surgical lasers, it does not cut or burn tissue. The aim is to influence cellular activity in a way that may reduce pain sensitivity, calm inflammatory processes and support tissue repair.

The treatment head is placed directly onto the skin or moved slowly over the painful region. Most people feel little or no sensation during treatment. Some may notice gentle warmth, depending on the device and settings, but laser therapy should not be painful.

The dose matters. Wavelength, power, treatment time, the size and depth of the target tissue, and how often treatment is given all affect the likely response. A superficial tendon near the skin requires a different approach from deeper structures around the hip or lower back. This is one reason a generic treatment programme may not suit every person or every condition.

Where can laser therapy help?

Laser therapy is most often considered for localised musculoskeletal pain where irritated or injured soft tissue is contributing to symptoms. It may be used alongside hands-on physiotherapy, progressive exercise, advice about activity modification and, where indicated, other treatments such as shockwave therapy or interventional pain medicine.

Common reasons to consider it include tendon pain, muscle strains, joint pain linked to osteoarthritis, shoulder pain, tennis or golfer’s elbow, plantar fasciopathy, Achilles tendinopathy and certain neck or back pain presentations. It can also be helpful when pain is making it difficult to begin rehabilitation exercises confidently.

That does not mean every painful joint or tendon needs laser treatment. Osteoarthritis, for example, involves changes across the joint, including cartilage, bone, synovium, muscles and movement patterns. Laser may ease pain for some people, but it will not regrow worn cartilage or replace the benefits of improving strength, mobility and load tolerance. Similarly, a tendon tear, significant nerve compression or inflammatory arthritis needs a clear diagnosis and condition-specific management.

Pain relief is only useful if it leads somewhere

The best result is not simply a lower pain score after an appointment. It is being able to walk further, lift more comfortably, return to the gym, manage stairs or sleep in a preferred position. If laser therapy reduces symptoms enough to help you restore movement and build strength, it may be a valuable part of recovery.

For persistent pain, the treatment plan also needs to account for sleep, stress, overall activity levels, work demands and flare patterns. People living with fibromyalgia, hypermobility spectrum disorder or Ehlers-Danlos syndrome often need a particularly thoughtful approach. Their pain is real, but the solution is rarely a single local treatment. Pacing, tailored exercise and a clinician who understands the wider picture are central.

What does the evidence say?

Research into laser therapy is encouraging for some musculoskeletal conditions, but results are mixed. Studies differ in the type of laser used, dose delivered, condition treated and whether laser was paired with exercise or other rehabilitation. This makes broad promises unhelpful.

There is evidence that appropriately dosed photobiomodulation can improve pain and function in some people with conditions such as knee osteoarthritis, certain tendon disorders and neck pain. However, the improvement is variable. Some patients notice a meaningful change after a few sessions; others experience only a modest short-term effect or no clear benefit.

A clinician should be open about that uncertainty. If there is no practical change in your symptoms or function after an agreed trial, continuing indefinitely is unlikely to be good value. Reassessment should guide the next step, whether that means adjusting rehabilitation, arranging musculoskeletal ultrasound, considering an injection or investigating another source of pain.

What happens during a laser therapy appointment?

A good appointment starts before the laser is switched on. Your physiotherapist will assess the area, ask about the onset and behaviour of your symptoms, examine movement and strength, and look for signs that suggest a more specific diagnosis or a need for onward medical assessment.

When laser is appropriate, the skin over the treatment area is exposed and protective eyewear is used. The clinician applies the device according to the tissues being treated and the treatment parameters selected. Sessions are usually brief, although the full appointment may also include manual therapy, exercise progression or education about how to manage loading between visits.

The number of sessions varies. Acute muscle or tendon irritation may settle over a short course, while longer-standing pain often needs a broader programme over several weeks. You should leave knowing what the treatment is intended to achieve, how progress will be measured and what you can do at home to support it.

Is laser therapy safe?

When delivered by a trained clinician with the correct equipment and precautions, laser therapy is generally well tolerated. Temporary tenderness or a short-lived increase in symptoms can occur, particularly if the area is already highly sensitive, but significant side effects are uncommon.

There are circumstances in which laser should be avoided or carefully considered. These include treatment over known or suspected cancer, directly over the eyes, over the thyroid gland, and over the abdomen or lower back during pregnancy. Caution may also be needed where there is reduced sensation, active bleeding, photosensitivity or medication that increases sensitivity to light. Your clinician should review relevant medical history before treatment.

Choosing the right treatment for your pain

Persistent pain deserves more than a menu of therapies. The most useful question is not, “Does laser work?” but, “What is driving my pain, and what will give me the best chance of moving better?” Sometimes the answer is laser alongside rehabilitation. Sometimes it is diagnostic musculoskeletal ultrasound to clarify whether a tendon, bursa, joint or nerve is involved. In other cases, an ultrasound-guided injection, shockwave therapy, acupuncture, focused strengthening or referral for medical review may be more appropriate.

This is especially relevant if pain is worsening, follows significant trauma, causes marked weakness or numbness, is associated with a hot swollen joint or fever, or is accompanied by unexplained weight loss or night pain. These symptoms need timely clinical assessment rather than repeated symptom treatment.

Laser therapy is most effective when it has a clear purpose within your plan: reducing pain enough to let you start moving with confidence, supporting recovery in an irritated tissue, or helping you tolerate the exercises that protect long-term function. The goal is not to chase a treatment. It is to help you return, step by step, to the activities that matter to you.