Red Light Therapy for Kids With ADHD

Last updated November 12, 2026

Researchers studying red light therapy for kids with ADHD have used specialized near-infrared devices aimed at the head. One small study reported faster responses on an attention task. Another found lower symptom scores over an eight-week study period. Whether these effects last or make daily life easier at home and school remains open. The studies have yet to establish a pediatric treatment schedule, and current ADHD care follows age-specific clinical guidelines. (1, 2, 3)

Why researchers are studying near-infrared light and attention

How red light therapy interacts with the brain — and why ADHD researchers are paying attention

Transcranial photobiomodulation, or tPBM, uses red or near-infrared light directed at the head. One proposed mechanism involves cytochrome c oxidase, an enzyme that helps cells produce energy. Researchers are investigating whether light alters mitochondrial activity or blood flow and whether those changes affect attention. The prefrontal cortex is a target in some studies because it helps regulate attention and behavior. (4, 1)

In a cadaver study, 808 nm light scattered less and was absorbed less in brain tissue than 660 nm or 940 nm light under the tested conditions. In a living child, the scalp, skull and way the device delivers light all influence how much reaches deeper tissue. (5, 1)

Bright light therapy uses visible light to influence the sleep-wake cycle. It has been studied for delayed sleep timing in adults with ADHD. (6)

What pediatric ADHD studies have found

What the current research actually shows — and where the data gaps are

In the crossover study, each child served as their own comparison. Among the 35 children with usable caregiver ratings, mean inattention scores on the SNAP-IV were 1.80 after active stimulation and 2.01 after sham. Hyperactivity and sleep outcomes showed no clear difference after statistical adjustment. Follow-up covered about a week after each session, leaving questions about longer-term changes in school or at home. The findings are available as a preprint. (1)

The headband study ran for eight weeks, with families using the study device at home under remote follow-up. The endpoint analysis used the last available score for participants who left before week eight. The study had a single treatment group, so the change in scores could reflect the device, expectations, ordinary symptom fluctuation or other factors. The results apply most directly to the group studied. (2, 8, 9)

Qilu Hospital's registered study plans to enroll 54 participants ages 6–18. A Beijing Normal University study is investigating working memory in children ages 6–16. The registry entries describe what the teams plan to measure. Neither entry provided outcome results in the records reviewed for this article. (10, 11)

What to discuss with your child's ADHD clinician

Preparing to use red light therapy with a child who has ADHD — the prerequisites that come first

If attention problems are affecting daily life, start with an ADHD evaluation. Clinicians ask about symptoms and impairment in more than one setting and can use reports from families and teachers. They also look for sleep problems, learning difficulties and other conditions that may need their own care. (3, 12)

The American Academy of Pediatrics recommends parent training in behavior management and, when available, behavioral classroom interventions as first-line options for ages 4–5. For ages 6–11, it recommends FDA-approved ADHD medication alongside parent training and/or classroom behavioral support. School accommodations can also be part of the care plan. (3, 12)

If your family is interested in tPBM research, bring the study link, your child's current medication list and any history of eye or skin problems or reactions to light. The research team can explain who is eligible, how it monitors participants and how the study fits alongside ongoing ADHD care. (1, 8)

How research sessions were designed

How to structure a session — practical steps in the right order

Zhao's team directed the research laser at the right prefrontal region and recorded brain activity during a visual-search task after each session. The Massachusetts General Hospital team used remote check-ins to review headband use, symptom scores and tolerability. (1, 8)

Wavelength is one part of the exposure. Optical output, illuminated area, device position and exposure time also matter. Pulsed settings can change the peak and average output. Pediatric ADHD research has yet to establish a safe or effective home-panel duration, distance, frequency or pulse setting. (13, 1, 8)

What the studies reported about side effects

 Verifying the session went right — signs of a good response versus red flags

A few children in the laser study reported mild warmth or fatigue. The headband study team recorded adverse events in 27 of 31 participants, including local warmth and headache. The team classified none as severe or serious. With a single study group, it is unclear which events were related to the device. Longer follow-up in larger groups would help identify less common effects. (1, 9)

Eye exposure depends on the light source, its position relative to the eyes and the duration of exposure. Near-infrared light can be present even when the device looks dim. In a study, follow the team's instructions for eye protection. If a child develops severe eye pain or a change in vision after light exposure, stop the exposure and seek urgent eye care. (14, 15)

If you're discussing a change in your child's attention with their clinician, bring specific observations from home and school. A teacher's report about classwork or a parent's notes about sleep and medication changes can help put a symptom score in context. (3, 12)

How to read device and safety claims

Common mistakes and how to avoid them

A panel's irradiance reading describes the light reaching the measurement surface in a specified setup. For an extended LED array used at close range, the distance and panel dimensions affect the reading. The inverse-square rule applies when the source behaves like a point. Ask for measured output at the labeled working distance and for the operating mode the report tested. (13, 16)

Optical safety testing also depends on where the light goes. In a 2026 lab study, two of four devices designed to deliver red light directly to the eyes for myopia reached ocular exposure limits before the recommended treatment time. The measurements describe those instruments. A head-worn device or panel requires its own assessment under its intended conditions of use. (17, 14)

IEC 62471 covers photobiological hazards from sources such as LEDs. IEC 60601-2-83 addresses basic safety and essential performance for certain non-laser home light therapy equipment. ISO 13485 covers the manufacturer's quality management system. To verify a medical authorization, check the device name, indication and age range in the regulator's decision record. (18, 19, 20, 21, 22)

Key Takeaways

The pediatric studies used a research laser or an investigational headband. They provide early data on attention and symptom ratings. Families interested in the research can bring the trial record to their child's ADHD clinician and continue the care plan already in place. (1, 2, 3)

FAQ

Can red light therapy replace medication for ADHD in children?

The available pediatric trials have yet to compare tPBM directly with ADHD medication. Medication decisions belong with the prescribing clinician, who can weigh the child's symptoms, age, side effects and response to the current treatment plan. (1, 2, 3)

Is there a best wavelength for ADHD?

The best wavelength is still unknown. The 850 nm LED and 1064 nm laser studies differed in equipment, participants and outcome measures. Researchers would need to compare wavelengths within the same trial to tell whether one works better for ADHD. (1, 8)

How old does a child have to be to try red light therapy for ADHD?

The crossover study included children ages 6–12, and the headband trial enrolled ages 9–17. Those ranges describe trial eligibility. Ask a pediatric clinician about the criteria for a specific study if your family is interested in participating. (1, 2)

Is it safe to use red light therapy on a child's head or scalp?

Safety data come from small, screened groups using specific research devices. Routine use of a consumer panel on a child's head remains unstudied in those trials. The device's intended use, optical output and eye exposure all matter in a safety assessment. (1, 8, 14)

How many sessions per week are typically used in ADHD light therapy studies?

Researchers have tested a single active exposure in a crossover study and repeated sessions over eight weeks in an open-label study. Those designs answer different research questions, and there is no validated weekly schedule for pediatric ADHD. (1, 8)

What if a child already receives phototherapy for eczema?

Pediatric dermatologists may prescribe ultraviolet phototherapy for some children with eczema. If your child is receiving it and you are considering an ADHD study, tell both clinicians which light treatment your child is receiving. The study team can check its eligibility and safety criteria. (23, 8)

Can teens use the same device for acne?

Acne studies have evaluated skin-directed red, blue and combined LED devices. For a teen's acne, discuss options designed and labeled for that skin condition with a dermatologist. A head-directed research device has its own intended use and exposure conditions. (24, 1, 8)

Are any red light therapy devices FDA-authorized for pediatric ADHD?

The public FDA sources reviewed for this article did not identify a red or near-infrared light device authorized for pediatric ADHD. To verify a claim about a particular model, look up the FDA decision and read the indications for use, including the ages covered. Establishment registration and device listing are administrative records. (21, 22)

What should I check on a device label?

Start with the intended use and age range. For a clinic or procurement review, ask for the model-specific user manual, optical measurements and applicable safety reports. Match the model number and settings on those documents to the product being evaluated. (13, 18, 21)

How do I know whether my child's ADHD symptoms are improving?

Ask the treating clinician which behaviors or rating scales to follow. Compare how your child is doing across settings over time, using concrete observations such as finishing assignments or needing fewer prompts during routines. A pattern across home and school can help the clinician interpret changes in the context of sleep, medication and classroom support. (3, 12)

References

1. Zhao Y, Li Y, Zhang K, et al. Transcranial Light Stimulation Improves Selective Attention in Children with ADHD. medRxiv. 2025. Preprint.
2. Massachusetts General Hospital. Transcranial photobiomodulation for autistic traits in youth with ADHD, NCT04569058. ClinicalTrials.gov results.
3. Wolraich ML, Hagan JF Jr, Allan C, et al. Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of ADHD in Children and Adolescents. Pediatrics. 2019.
4. Hamblin MR. Shining light on the head: Photobiomodulation for brain disorders. BBA Clinical. 2016.
5. Tedford CE, DeLapp S, Jacques S, Anders J. Quantitative analysis of transcranial and intraparenchymal light penetration in human cadaver brain tissue. Lasers in Surgery and Medicine. 2015.
6. Fargason RE, Fobian AD, Hablitz LM, et al. Correcting delayed circadian phase with bright light therapy predicts improvement in ADHD symptoms: A pilot study. Journal of Psychiatric Research. 2017.
7. ClinicalTrials.gov. An intervention study on transcranial photobiomodulation in children with ADHD, NCT06685601.
8. Massachusetts General Hospital. Study protocol and analysis plan for NCT04569058.
9. Ceranoglu TA. Addressing ASD–ADHD comorbidity. Massachusetts General Hospital continuing medical education presentation. 2026.
10. Qilu Hospital of Shandong University. Transcranial photobiomodulation with multiple interventions in children with ADHD, NCT07154732. ClinicalTrials.gov registration.
11. Beijing Normal University. Effects of transcranial photobiomodulation on working memory in children with ADHD, ChiCTR2600126780. Chinese Clinical Trial Register.
12. Centers for Disease Control and Prevention. Clinical Care of ADHD in Children.
13. Hadis MA, Zainal SA, Holder MJ, et al. The dark art of light measurement: accurate radiometry for low-level light therapy. Lasers in Medical Science. 2016.
14. International Commission on Non-Ionizing Radiation Protection. Guidelines on Limits of Exposure to Incoherent Visible and Infrared Radiation. Health Physics. 2013.
15. National Health Service. Eye injuries.
16. Ryer A. Light Measurement Handbook, Basic Principles. International Light. 1997.
17. Ostrin LA, Schill AW. Safety Evaluation of 4 Red Light Therapy Devices for Myopia. JAMA Ophthalmology. 2026.
18. International Electrotechnical Commission. IEC 62471:2006, photobiological safety of lamps and lamp systems.
19. International Electrotechnical Commission. IEC 60601-2-83:2019+AMD1:2022, home light therapy equipment.
20. International Organization for Standardization. ISO 13485:2016, medical device quality management systems.
21. U.S. Food and Drug Administration. Medical device registration, listing, clearance, and approval.
22. U.S. Food and Drug Administration. Device Approvals and Clearances.
23. American Academy of Dermatology. Eczema treatment: Phototherapy.
24. Ershadi S, Barbieri JS. At-Home LED Devices for the Treatment of Acne Vulgaris: A Systematic Review and Meta-Analysis. JAMA Dermatology. 2025.