Infrared Light Therapy

Reviewed by the HeyPsych Medical Review Board

Board-certified psychiatrists and mental health professionals

Indications

Primary Indications

Chronic musculoskeletal painJoint stiffnessSoft tissue injury recoveryInflammation modulationAdjunctive post-stroke rehabilitation

Mechanism

Near-infrared light penetrates tissues and is absorbed by cytochrome c oxidase in mitochondria, enhancing ATP production, modulating reactive oxygen species, and promoting anti-inflammatory signaling. Far-infrared primarily induces vasodilation and increased blood flow through gentle heating.

Protocol

Preparation

Identify treatment area; ensure clean, dry skin; provide eye protection for near-infrared laser/LED.

Procedure

Position device at manufacturer-specified distance.
Apply near-infrared light for 10–20 minutes over target area (e.g., joint, muscle, scalp for neuro applications).
For far-infrared, allow gradual warming over 15–30 minutes.
Avoid continuous exposure to prevent overheating.

Frequency: 2–4 sessions per week initially; adjust based on response.

Duration: 4–8 weeks for initial course; maintenance as needed.

Total Treatment Time: Variable, often 8–20 sessions for musculoskeletal issues.

Equipment

Near-infrared LED or laser device (700–1,000+ nm)
Far-infrared heat panel or sauna
Eye protection for near-infrared

Expected Outcomes

Immediate

Mild warmth
Temporary pain relief

Short Term

Improved joint mobility
Reduced pain and stiffness

Long Term

Enhanced tissue healing
Sustained pain reduction
Improved circulation

Side Effects

common

Warmth
Mild redness

uncommon

Skin irritation

rare

Burn if used improperly

Contraindications

absolute

Active skin cancer on treatment site
Direct retinal exposure

relative

Pregnancy (avoid abdominal use)
Photosensitive conditions

special considerations

Monitor temperature in patients with impaired sensation.

Patient Selection

ideal candidates

Chronic pain sufferers
Post-injury recovery patients
Those seeking non-drug pain relief

screening required

Medical history review
Check for photosensitivity or cancer history at site

Research Evidence

Key Studies

Chow RT et al. Efficacy of low-level laser therapy in the management of neck pain: a systematic review and meta-analysis. Lancet. 2009.
Hamblin MR. Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. AIMS Biophys. 2017.

Limitations

Variability in devices, dosing, and wavelength protocols; limited high-quality neurocognitive studies.

Cost Considerations

typical session cost: $30–$100 per session (clinic)

total treatment cost: $240–$800 for a typical course; $200–$1,000 for home units

insurance coverage: Often not covered for general wellness; sometimes covered for specific pain diagnoses.

cost effectiveness: Moderate to high when reducing medication use or improving function.

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Integration Support

Concurrent Therapies

Physical therapy
Exercise programs
Manual therapy

Special Populations

👶Pregnancy

Avoid abdominal exposure without clearance.

This treatment information is for educational purposes only. Treatment decisions should be made in consultation with qualified healthcare professionals based on individual circumstances, symptoms, and medical history. Do not attempt treatment without professional guidance.

Interested in this treatment?

This information is for educational purposes. Always consult with a qualified healthcare provider before starting any new treatment.

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