Red Light Therapy for Chronic Pain: What the Evidence Actually Shows

Red light therapy (commonly referred to as RLT) may help reduce chronic pain in certain conditions by affecting the processes in the body that keep pain signals active. Research suggests red and near-infrared light can help reduce inflammation, calm overactive pain-sensing nerves, support cellular energy production, and improve local blood flow. These effects have been studied across conditions including fibromyalgia, neuropathic pain, and chronic back and neck pain.

Red light therapy is not a cure for chronic pain, and it does not work for everyone. Evidence suggests it is more effective for some types of chronic pain, particularly certain nerve-related conditions, than for rheumatoid arthritis or tendon disorders. Even so, red light therapy, also called photobiomodulation, has been evaluated in dozens of randomized controlled trials, and a 2020 federal evidence review found that low-level laser therapy (LLLT) produced improvement that lasted at least a month after treatment ended, a demanding standard that many widely used therapies failed to meet.

Lasers deliver a more concentrated dose to a smaller, more precise area than the LEDs used in most at-home devices. Both deliver the same red and near-infrared wavelengths used for photobiomodulation, but the amount and intensity of light that reaches the body may differ substantially. That's why major reviews, including the 2026 systematic review of photobiomodulation for chronic pain, evaluate laser and LED trials together. Results vary considerably by condition, which is why this article looks at each one separately rather than treating all chronic pain the same.

Here's what the research actually shows:

• Nerve-related pain has the strongest evidence. A 2025 umbrella review of 204 randomized trials found significant pain reduction in burning mouth syndrome, rated moderate certainty — the highest certainty rating any pain outcome has achieved in the photobiomodulation literature.

• Fibromyalgia responds most clearly in fatigue, stiffness, and daily impact. The same review found large improvements in Fibromyalgia Impact Questionnaire scores, fatigue, and stiffness, though pain intensity scores themselves did not reach statistical significance (were not different enough to rule out chance).

• Benefits may continue after treatment stops. The AHRQ federal evidence review found low-level laser therapy met its standard for lasting benefits for chronic low back pain and chronic neck pain, meaning improvement persisted at least one month post-treatment. Strength of evidence was rated low.

• Results differ significantly by condition. In knee osteoarthritis, photobiomodulation showed a meaningful improvement in the ability to perform daily activities but a very small effect on pain. In rheumatoid arthritis, the umbrella review found no significant effect.

• Protocol appears to matter more than the therapy itself. An analysis that examined how different doses affected results of 22 knee osteoarthritis trials found that treatments using recommended wavelengths and doses significantly reduced pain and disability, while those outside that range did not, suggesting some negative findings may be due to doses that were too low.

• Red light therapy appears safe and well tolerated. Across the 14 randomized trials in a 2026 systematic review, 13 reported no treatment-related side effects. The one that did report such effects reported only temporary warmth, mild discomfort at the treatment site, and brief tingling, all of which resolved on their own.

At Novaalab, our FDA-cleared red light therapy devices use the red and near-infrared wavelengths most commonly studied for photobiomodulation, pain relief, tissue repair, and the temporary relief of minor muscle and joint pain. Below, we'll look at how red light therapy affects chronic pain, which conditions have the strongest research behind them, how to use it, and what to realistically expect.

Red Light Therapy for Chronic Pain at a Glance

Evidence for red light therapy spans a wide range of pain conditions. A 2022 review of low-intensity laser and LED therapy found reduced pain intensity across many of the most common musculoskeletal conditions, including non-specific knee pain (knee pain without a clearly identified cause), osteoarthritis, fibromyalgia, temporomandibular disorders, neck pain, and low back pain.

Novaa Knee Ultra

• Treats entire knee, not just one side
• 96 high-output LEDs speeds healing
• Move freely during treatment

$269.90

★★★★★ 4.9 · 330 reviews

Shop Novaa Knee Ultra

60-day money-back guarantee + up to 3-year warranty

But evidence across many conditions does not mean the evidence is equally strong for each one, and the research is considerably clearer for some conditions than others. We break down this difference in detail further below. Here's the quick version of how red light therapy works, what the research says about safety and protocol, and how strong the evidence is overall.

Which Chronic Pain Conditions Respond Best to Red Light Therapy

Red light therapy is not equally effective for every kind of chronic pain. The same biological mechanisms are at work across conditions, but clinical results differ considerably depending on what's driving the pain, what type of tissue is involved, and how deeply light needs to penetrate to reach it.

• Strongest evidence: Neuropathic pain, including diabetic and chemotherapy-related nerve pain and burning mouth syndrome, along with fibromyalgia, where improvements show up most clearly in fatigue, stiffness, and daily function

• Mixed or limited evidence: Chronic low back pain, chronic neck pain, myofascial pain, temporomandibular disorders, and knee osteoarthritis. Some trials show clear benefit and others show none, often depending on the dose and wavelength used.

• Little to no measured effect: Rheumatoid arthritis and tendon-related conditions like Achilles tendinopathy and plantar fasciitis, where the largest evidence review to date found no significant pooled effect

Almost everything in the table above is rated low certainty. That's a more specific statement than it sounds, and not the discouraging one it appears to be. Consider this:

• Evidence certainty reflects several factors, including study quality, consistency, precision, and risk of bias, not simply how well the treatment performed. Trials in this field have used very different wavelengths, doses, and schedules — amounts of light energy delivered in the 2026 systematic review ranged from about 4 to over 130 joules per square centimeter (a measure of how much light energy reaches a given area). That inconsistency lowers certainty even when most individual trials reach similar conclusions. Several fibromyalgia outcomes rated low certainty showed large, consistent benefits.

• Dose appears to explain a real share of the disagreement between studies:

  • A dose-response meta-analysis of 22 knee osteoarthritis trials found that treatments using recommended wavelengths and doses significantly reduced pain and disability compared with placebo, while treatments outside those ranges did not.

  • Low back pain remains the clearest exception. A large randomized trial of 148 patients, with participants, therapists, and assessors all blinded, found no benefit over placebo. A federal review found low-level laser therapy did meet its durability threshold for low back pain, so the overall picture is genuinely mixed, but this is the trial with the strongest safeguards against biased results to date and worth weighing if back pain is your primary concern.

• The practical takeaway: Red light therapy appears to work best when an adequate dose reaches the target tissue, which is easier for surface-level nerves and joints than for deeper structures in the lower back.

How Red Light Therapy Helps Reduce Chronic Pain

Chronic pain is rarely driven by a single problem. It usually involves several processes at once: inflammation that never fully resolves, nerves that have become oversensitive, cells that may not have enough energy to repair tissue efficiently, and areas of tissue receiving less blood flow than they need. Each of these can sustain the others, which is part of why chronic pain so often resists treatments that target only one of them.

Red and near-infrared light appear to influence several of these processes simultaneously. Researchers use the term photobiomodulation to describe this effect — the ability of specific wavelengths of light to change how cells behave without relying on heat or damaging tissue. It's the same process described as low-level laser therapy or low-level light therapy in earlier research.

Each of these pathways has been studied in clinical trials. The sections below explain what the research shows for specific types of chronic pain.

May Calm Overactive Pain Signals in Nerve Tissue

Nerve-related pain is where red light therapy has produced its most consistent results. If your chronic pain is nerve-related — burning, tingling, shooting, or unusually sensitive to touch — this is the area with the strongest research support for red light therapy.

In conditions like diabetic neuropathy, chemotherapy-induced neuropathy, and burning mouth syndrome, the problem is that the nerves themselves have become dysfunctional, not ongoing tissue damage. Damaged nerve fibers fire pain signals without a triggering injury, and over time the spinal cord and brain make those signals stronger instead of reducing them. This is why neuropathic pain often feels different from other pain: burning, tingling, shooting, or electric rather than aching or sore.

Red and near-infrared light appear to make these nerve fibers less likely to send pain signals (known as Aδ and C fibers, or A-delta and C fibers, two types of nerves that carry pain signals). Researchers believe photobiomodulation also influences how pain is processed further along the pathway, in the spinal cord and brain, and may increase the release of brain chemicals that change how nerve signals are transmitted, like serotonin that help dampen pain transmission.

What this may look like: The trials in this area measure pain using scales built specifically for nerve pain, which score symptoms like burning, tingling, numbness, and pins-and-needles. Improvements on those scales suggest a reduction in exactly those sensations, though individual results vary.

• A 2025 umbrella review — one of the broadest ways to summarize existing evidence — found that photobiomodulation significantly reduced pain in burning mouth syndrome, with a large effect size and a moderate certainty rating. That's the strongest certainty rating any pain outcome has earned in the photobiomodulation literature to date, and additional statistical testing indicated the finding was unlikely to be explained by studies with negative results going unpublished.

• For diabetic and chemotherapy-related nerve pain, a 2026 systematic review identified four randomized trials with consistently positive results. In one double-blinded, sham-controlled trial in chemotherapy patients, photobiomodulation significantly improved neuropathy scores compared with sham treatment. Another trial using near-infrared light three times weekly over 30 days found significant pain reduction compared with both placebo and standard medication alone. Notably, a third trial used LED rather than laser and reported reductions of roughly five points on a validated neuropathic pain scale across red, infrared, and combined red-and-infrared groups.

May Help Regulate the Inflammation That Sustains Pain

Persistent inflammation is one of the main reasons chronic pain outlasts the injury that started it. If your pain involves widespread soreness, morning stiffness, and fatigue that doesn't lift with rest, this is the mechanism most relevant to you.

When tissue is injured, the immune system releases signaling molecules, proteins that help control immune and inflammatory responses, called cytokines (including IL-1β, IL-6, and TNF-α) that make nerve endings more sensitive so you protect the area while it heals. In chronic pain, that signaling never fully switches off. Pain receptors stay sensitized, tissue stays mildly swollen, and the nervous system keeps treating the area as injured long after the original damage has resolved.

Red and near-infrared light appear to reduce the release of these inflammatory mediators (inflammation-promoting substances), along with prostaglandins, another group of compounds involved in pain and swelling. Photobiomodulation also appears to reduce cell damage, caused by an imbalance of unstable molecules and the body’s defenses against them, in the treated tissue. Together, these effects may lower the background inflammation that keeps pain receptors on high alert.

What this may look like: The strongest fibromyalgia findings come from the Fibromyalgia Impact Questionnaire, which scores things like morning tiredness, stiffness, fatigue, and the ability to get through everyday tasks. Improvement there reflects easier mornings and better function during the day, rather than a change in peak pain intensity.

• A 2025 umbrella review found significant effects on three of seven fibromyalgia outcomes: overall impact on daily life, fatigue severity, and stiffness severity. All three qualified as large effects, though the certainty of evidence was rated low because treatment protocols varied so widely between the underlying trials. Notably, that same analysis did not find a significant pooled effect on pain intensity scores or tender point counts in fibromyalgia, a distinction worth knowing before starting treatment.

• Individual trials have been more favorable on tenderness specifically. One triple-blinded placebo-controlled trial, rated low risk of bias in every category, found a marked reduction in tender point count after nine sessions over three weeks. This trial combined photobiomodulation with a static magnetic field, so researchers can’t tell how much of the benefit came from the light therapy alone.

• The anti-inflammatory pathway itself is well documented. Mechanistic research shows red and near-infrared light reduce pro-inflammatory cytokines and prostaglandins, decreasing swelling and the sensitization of pain receptors.

May Ease Muscle Tension and Myofascial Pain

Muscle-related pain has a mix in research findings — some trials show clear benefit, others show none. Because muscle tissue lies deeper beneath the skin, studies of muscle pain often used near-infrared light or a combination of red and near-infrared wavelengths. If your pain is muscular, look for a device that includes near-infrared light to reach deeper tissues and pair red light therapy with movement or physical therapy rather than relying on it alone.

Myofascial pain develops when muscle tissue gets caught in a self-sustaining loop: Localized inflammation reduces blood flow, reduced blood flow keeps the muscle contracted, and sustained contraction generates more inflammation. Trigger points, which are small hypersensitive knots within the muscle, form when that cycle continues unchecked, and they can send pain to areas away from the knot itself.

Red and near-infrared light may interrupt this cycle from several directions at once: reducing inflammatory activity within the muscle, improving local circulation, and supporting the cellular energy needed for muscle recovery.

What this may look like: Trials in this area measure pain intensity, disability, range of motion, and the amount of pressure an area can tolerate before it begins to hurt. Improvement suggests less tenderness to touch and easier movement, though results have been less consistent here than for nerve or inflammatory pain.

• A meta-analysis of myofascial neck pain trials found significant reduction in neck pain, one of the outcomes that reached statistical significance when re-examined in the 2025 umbrella review. Certainty was rated low.

• The AHRQ federal evidence review found low-level laser therapy met its durability threshold for chronic neck pain, meaning improvement persisted at least a month after treatment ended. Strength of evidence was rated low.

• A triple-blinded placebo-controlled trial in chronic neck and shoulder pain found lower pain scores than placebo at every follow-up measurement. The same trial found no significant difference in functional outcomes between groups — a good illustration of why the evidence here is described as mixed.

• The 2026 systematic review specifically flags musculoskeletal conditions, including neck pain and jaw pain, as showing more variable results than neuropathic or fibromyalgia pain — sometimes improving within a treatment group without clearly separating from placebo.

May Support Cellular Energy Production for Tissue Repair

This is a foundational mechanism behind red light therapy. It's also the one you don't directly feel because it works before — and may contribute to — the changes you might eventually notice.

Every cell runs on ATP (adenosine triphosphate), produced by mitochondria. Repairing tissue, clearing inflammatory byproducts, and maintaining healthy nerve function are all processes that require a great deal of cellular energy. In chronically inflamed or damaged tissue, mitochondria may become less efficient at producing energy, so cells have less capacity for the repair work they need to do, which is one reason chronic pain conditions can stall rather than resolve.

Red light in roughly the 630 nm to 660 nm range and near-infrared light in roughly the 800 nm to 905 nm range are absorbed by cytochrome c oxidase, an enzyme in the the series of reactions mitochondria use to produce cellular energy. That absorption appears to activate the chain and increase ATP production, supporting cell survival, the production of new cells, and tissue repair. Photobiomodulation also appears to activate antioxidant enzymes and help regulate unstable oxygen-containing molecules that can damage cells when levels become too high, reducing oxidative stress.

What this may look like: Nothing immediately. Cellular changes accumulate, which is why nearly every clinical trial uses repeated sessions over weeks rather than single treatments and why researchers describe the benefits as cumulative.

• The 2025 umbrella review describes this mitochondrial pathway as the core process by which photobiomodulation supports cell proliferation, survival, and tissue regeneration across all the conditions it examined.

• A triple-blinded placebo-controlled trial in fibromyalgia followed participants for six months after treatment — far longer than most photobiomodulation research. Twelve sessions produced significant pain reductions that were still measurable at the six-month mark. This trial used a whole-body clinical system rather than a consumer device, so the treatment conditions differ from at-home use.

• An important caveat: This mechanism is the same across every condition, but the clinical results are not. Knee osteoarthritis and fibromyalgia both involve this pathway yet produce very different outcomes in trials. A plausible mechanism explains why a therapy might work; it doesn't establish that it will for any given condition.

May Improve Local Blood Flow in Poorly Supplied Tissue

This mechanism is best understood as something that supports the other effects rather than driving pain relief on its own.

Many chronic pain conditions involve tissue that doesn't receive as much blood as it needs. Less blood flow means less oxygen, fewer nutrients, and slower delivery of the immune cells involved in repair. It also means the byproducts of inflammation clear more slowly, and several of those byproducts directly stimulate pain receptors.

Red and near-infrared light appear to trigger the release of nitric oxide, a signaling molecule that relaxes and widens blood vessels. The resulting improvement in blood flow through the smallest blood vessels and lymphatic flow may increase oxygen delivery to the treated area while speeding the removal of waste products and other compounds that can activate pain receptors.

What this may look like: This is difficult to isolate. No trial has cleanly separated circulation from the anti-inflammatory and mitochondrial effects, because all three happen simultaneously in treated tissue. What can be said is that increasing local blood circulation is among the specific uses FDA has cleared these devices for.

• A mechanistic review found that photobiomodulation's anti-inflammatory effects are accompanied by improved microcirculation and lymphatic flow, enhancing tissue oxygenation and accelerating clearance of pain-producing compounds. The review also found these effects were dose-dependent. It focused primarily on acute rather than chronic pain.

Which Red Light Therapy Device Is Best for Chronic Pain?

The best device for chronic pain is mostly a question of how large the painful area is, whether it wraps around a joint, and how easily you can treat it consistently without holding something in place for 20 minutes.

Coverage matters more than most people expect. Photobiomodulation only affects tissue the light actually reaches, so a device that covers your whole lower back at once will deliver a more consistent dose than one you reposition six times per session. And because the benefits build cumulatively over weeks, the practical question is which one you'll still be using in month two.

Novaa Light Pad for Back, Hip, and Widespread Pain

The Novaa Light Pad is the most versatile option for chronic pain because it covers a large area and conforms to the body without needing to be held. That makes it practical for the lower back, hips, shoulders, and thighs, and it's the format that best matches the way most chronic pain trials treated a painful region plus the surrounding tissue. For neuropathic pain in the feet or hands, its flexibility lets it wrap an area that a rigid panel would struggle to reach evenly.

Novaa Light Pad for Deep Healing

• Relief and recovery for the whole body
• With our patented remote
• Coverage: 15.7" x 9"

$349.90

★★★★★ 4.8 · 1030 reviews

Shop Novaa Light Pad for Deep Healing

60-day money-back guarantee + up to 3-year warranty

Novaa Recovery Pod for Full-Body Pain

For people with widespread pain or pain at multiple sites, Novaa Recovery Pod offers full-body treatment in a single session, rather than requiring you to move a device to several different areas. This approach may be especially practical for conditions like fibromyalgia or when pain affects several muscle groups or joints at once. While most clinical studies used professional photobiomodulation systems rather than at-home recovery pods, treating larger areas aligns more closely with the whole-body approach used in some fibromyalgia research.

Novaa Knee Ultra for Joint Pain

Joints are awkward targets for flat panels. The Novaa Knee Ultra wraps the joint so light reaches it from several angles at once, which addresses one of the practical problems in knee osteoarthritis research, getting an adequate dose to tissue that sits beneath skin, fat, and connective tissue when a flat panel delivers light from only one direction .

Novaa Light Switch for Targeted Areas

For a specific trigger point, a small joint, or a localized area of pain, the Novaa Light Switch concentrates treatment on one spot rather than spreading it across a region. It's also the most portable option, which matters if consistency is the thing you struggle with.

Novaa Light Switch

• 3 Superior medical-grade light heads
• Get rid of acne, eczema and other skin issues

$339.90

★★★★★ 4.9 · 62 reviews

Shop Novaa Light Switch

60-day money-back guarantee + up to 3-year warranty

How to Use Red Light Therapy for Chronic Pain

There's no single standardized protocol for photobiomodulation. What research does offer is a set of parameters that appear consistently in trials that worked and a few clear signals about what doesn't help.

• Look for both red and near-infrared wavelengths. Trials in chronic pain have used wavelengths ranging from about 660 nm to 905 nm. Red light in roughly the 630 nm to 660 nm range is absorbed closer to the surface, while near-infrared light from about 800 nm to 905 nm penetrates further to reach joints, deeper muscle, and nerve tissue. Most chronic pain research uses near-infrared or a combination of both, which is why devices offering only red light may be less suited to deeper pain.

• Consistency matters more than any single session. Nearly every clinical trial used repeated sessions over weeks rather than one-off treatments, most commonly two to three sessions per week over three to twelve weeks. The effects appear to build cumulatively, so a regular schedule you can maintain will serve you better than occasional longer sessions.

• More light is not better. Photobiomodulation follows what researchers call a biphasic dose response, meaning there's a window where treatment works, and doses above that window can produce weaker results than moderate ones. This is one of the few areas where the research is unambiguous, and it's the main reason to follow your device's instructions rather than assuming longer sessions will speed things up.

• Dose is what matters, and dose depends on distance. Total dose is a product of the device's output, how far it sits from your skin, and how long you use it. Moving a device further away drops the delivered dose substantially, which means distance and session length work together. Follow the specific guidance for your device rather than borrowing a protocol from a study or another product.

• Treat the area around the pain, not just the point of pain. Trial protocols typically cover the painful region plus surrounding tissue. For lower back pain, that means including the hips and upper glutes; for neck pain, the shoulders and upper back.

• Use red light therapy alongside other treatments, not instead of them. Every high-quality review of photobiomodulation for chronic pain positions it as an adjunctive therapy, something that works with physical therapy, exercise, and medical care rather than replacing them. If light therapy makes movement more comfortable, that's an opportunity to do the stretching or rehab work that has its own strong evidence base.

What to avoid:

• Treating over open wounds, active infections, or areas of skin with unexplained changes

• Direct eye exposure, particularly with near-infrared light, which is invisible and doesn't trigger a blink reflex

• Expecting relief from a single session, or abandoning it after a week

Novaalab devices deliver both red and near-infrared wavelengths in the ranges used in photobiomodulation research. The Novaa Light Pad wraps to cover larger areas like the lower back, hips, and shoulders, while the Novaa Knee Ultra is built to wrap a joint for more targeted treatment.

What to Expect: Timeline for Chronic Pain Relief

Photobiomodulation trials measure outcomes at the end of a treatment course, not week by week along the way, so the research shows what happened after a full course, not when it started happening. What the research does tell you is how long a realistic course looks like, how large the effects were when they occurred, and whether they lasted.

• Plan in weeks, not days. Treatment courses in the 2026 systematic review of chronic pain trials ran anywhere from three days to twelve weeks, with most using two to three sessions per week. A reasonable commitment before judging results is the length of a typical trial course, several weeks at minimum.

• Effects build up rather than switching on. Nearly all trials used repeated sessions over time, and the mechanisms behind photobiomodulation are cumulative ones: cellular energy production, inflammatory signaling, and tissue repair all change gradually. A single session is not a meaningful test.

• When it worked, the difference was noticeable. In several trials within the 2026 review, pain reduction exceeded the threshold researchers use for clinical relevance, typically a drop of more than two points on a ten-point pain scale. That's the difference between pain you're managing around and pain you're mostly not thinking about.

• Benefits appear to outlast the treatment course. The AHRQ federal review found improvement persisting at least a month after low-level laser therapy ended for chronic low back and neck pain. A six-month follow-up trial in fibromyalgia found significant pain reduction still measurable half a year after treatment finished.

• A meaningful share of people won't respond. Of 35 outcomes examined in the 2025 umbrella review, 23 showed no significant effect. Even in conditions where photobiomodulation performed well, individual trials included participants who saw no benefit.

Here's what treatment courses actually looked like in some of the better-controlled trials:

How to tell whether it's working for you: Track something more specific than overall pain. Trials measure things like how much pressure an area tolerates before hurting, how stiff you are in the morning, how far you can move comfortably, and how much pain interferes with sleep and daily tasks. Those tend to shift before a general sense of "my pain level" does, and they're easier to notice honestly than a number you're estimating from memory. If you've completed a full course of consistent use with no change in any of them, red light therapy may not be effective for your particular pain.

Is Red Light Therapy Safe? Side Effects and Precautions

Safety is the strongest part of the evidence base for red light therapy, stronger, in fact, than the efficacy findings. Across the chronic pain trials, adverse events were rare, mild, and temporary.

• Most trials reported no side effects at all. Of the 14 randomized trials in the 2026 systematic review of photobiomodulation for chronic pain, 13 reported no adverse events. The one that did indicate effects described only transient warmth at the treatment site, mild discomfort, and brief tingling, all of which resolved on their own without treatment.

• No serious adverse events occurred in any trial. The same review found no serious adverse events and no participants who dropped out because of the treatment itself.

• Federal review reached the same conclusion. The AHRQ evidence review of noninvasive treatments for chronic pain found no evidence of increased risk for serious treatment-related harms from low-level laser therapy or any of the other therapies it assessed.

What you may notice during a session: Mild warmth in the treated area is the most common experience, along with occasional tingling. Near-infrared light is invisible, so you may feel warmth without seeing much light at all. These sensations typically fade within minutes of finishing.

Who Should Check with a Doctor First

The precautions below are standard guidance for light therapy devices rather than findings from the chronic pain research. Most reflect caution in situations where evidence is limited, not documented harm.

• Active cancer, or a history of cancer in the area you'd be treating: Photobiomodulation supports cell proliferation, and while there's no evidence it promotes tumor growth, this is a situation where the sensible default is to ask your oncologist rather than assume.

• Medications or conditions that increase light sensitivity: Certain antibiotics, acne medications, diuretics, and herbal supplements can make skin more reactive to light. If you're unsure, a pharmacist or dermatologist can tell you whether anything you take falls into this category.

• Photosensitive epilepsy or a seizure disorder: Devices with pulsing or flashing settings may pose a risk. A continuous-output setting is generally the safer choice, but check with your doctor first.

• Pregnancy: Not because harm has been shown, but because photobiomodulation hasn't been studied in pregnancy, and there's no basis for reassurance either way.

• Implanted medical devices in the treatment area, including pacemakers and neurostimulators: Always consult your doctor first.

• Pain that's new, worsening, or unexplained: Chronic pain that changes character deserves a diagnosis before it gets a treatment. Red light therapy addresses symptoms; it doesn't tell you what's causing them.

General Precautions

• Don't treat over open wounds, active infections, or skin changes you haven't had looked at

• Avoid direct eye exposure. This matters more with near-infrared light, which is invisible and won't trigger a blink reflex

• Start with shorter sessions if you have sensitive skin, and follow your device's instructions rather than extending sessions to speed results

• Keep using it consistently rather than intensively — the biphasic dose response means overtreatment can work against you

Remember: Red light therapy isn't a replacement for medical care. Every high-quality review positions photobiomodulation as a therapy used alongside physical therapy, exercise, medication, and the guidance of your healthcare providers rather than instead of them. If you have chronic pain, the strongest evidence-based approach combines several treatments, and red light therapy is best understood as one component of that.

Start Managing Chronic Pain with Red Light Therapy

Red light therapy won't cure chronic pain, and it won't work for everyone. But it occupies a genuinely useful position: a non-invasive, drug-free option with a strong safety record and effects that federal review found can persist after treatment ends. The evidence is clearest for nerve-related pain and fibromyalgia, mixed for back and neck pain, and weaker for joint conditions like knee osteoarthritis, so knowing where your condition falls matters more than any blanket promise.

What consistently separates the trials that worked from the ones that didn't is dose and consistency. Clinical studies ran for weeks using regular sessions, and the benefits built gradually rather than arriving all at once. Used that way, alongside physical therapy, movement, and the care you're already receiving, red light therapy is a reasonable addition to a broader pain management plan.

If you're ready to try it, Novaalab's devices deliver the red and near-infrared wavelengths used in photobiomodulation research. The Novaa Light Pad covers larger areas like the back and hips, while the Novaa Knee Ultra wraps the joint for targeted treatment. Not sure which fits your pain? Take the device quiz to find the right match.