Photobiomodulation: In what cases is it contraindicated?

Photobiomodulation is a gentle, non-invasive technology that is well tolerated by most users. However, like any treatment, it is not recommended in certain situations. It is important to follow these recommendations to ensure safe use.

Is photobiomodulation dangerous?

No. It is neither thermal, ionizing, nor invasive. It uses natural wavelengths to stimulate cellular biology. Thousands of studies and clinical applications confirm that it is well tolerated. But that does not mean it is suitable for every situation.

👉 For more general information, visit our page "Photobiomodulation: Is It Dangerous?"

What are the main contraindications?

Absolute contraindications

• Active cancer
  (tumor present or currently undergoing treatment): unless authorized by a healthcare professional.
• Pregnancy
  As a precaution, the light should not be directed at a pregnant woman’s abdomen or lower back.
• Photosensitive epilepsy
  Exposure to light sources, even non-flickering ones, can theoretically trigger a seizure.
• Undiagnosed lesion
  Any unexplained tumor or wound must be examined before considering light exposure.

Relative contraindications

• Taking photosensitizing medications
  (e.g., antibiotics in the fluoroquinolone class, certain antifungal medications, or diuretics). Consult a healthcare professional.
• Prolonged topical corticosteroid treatment
  May interfere with the cellular response to light. Use with caution on recently treated areas.

Photobiomodulation and Children

Its use may be considered in certain contexts (e.g., neurodevelopmental disorders, wound healing), but always under professional supervision.

Photobiomodulation and Medical History

It is recommended that you consult a healthcare professional if you have:

• A history of cancer
• A progressive autoimmune disease
• Immunosuppressive therapy
• Hormonal or thyroid disorders

Light acts at the cellular level: adjusting the protocol may be helpful.

PBM Devices: How to Choose and Use Them Properly

For safe use at home:

• Follow the recommended exposure protocols
• Use certified devices such as the PBM-300 or the PBM-600
• Avoid direct contact with the eyes (wear safety goggles if necessary)

Frequently Asked Questions

Is photobiomodulation safe for everyone?

It is generally well tolerated, but certain situations require extra caution.

In what situations is PBM not recommended?

Active cancer, pregnancy, photosensitive epilepsy, unexplained skin lesions, photosensitizing treatments, etc.

Are there any side effects?

These are rare: a sensation of warmth, localized redness, and temporary headaches. Staying well-hydrated and taking breaks are recommended.

Scientific sources cited

• Photobiomodulation in Clinical Practice: Safety Guidelines and Therapeutic Potential – Chung et al. – 2012 – PubMed
• Phototherapy and safety: A review of contraindications and side effects – Wang et al. – 2020 – PubMed
• Photobiomodulation and Cancer: Cautionary Perspectives – Hamblin MR – 2018 – PMC

See also

• Photobiomodulation: Possible Side Effects
• At-home photobiomodulation: precautions to take
• Standards and Safety of Photobiomodulation Devices