Blue Light Photodynamic therapy illuminator
Mohs Center of Richmond Dermatology
What is it?
Photodynamic Therapy (PDT) – BLU-U® Blue Light Therapy
Photodynamic therapy (PDT), also known as BLU-U® Blue Light Therapy, combines a light-sensitive medication with a special blue light to destroy abnormal skin cells.
During your visit:
- A light-sensitive solution (aminolevulinic acid, or ALA) is applied to the treatment area.
- The medication is allowed to absorb into the abnormal cells for a period of time.
- The area is then exposed to a blue light, which activates the medication and selectively destroys damaged cells while minimizing injury to surrounding healthy skin.
Best for:
- Actinic keratoses (precancerous sun damage)
- Large areas of sun-damaged skin ("field treatment")
- Some patients with extensive sun damage who want to reduce future precancers
Advantages
- No surgery or stitches
- Can treat large areas of sun-damaged skin at one time
- Excellent cosmetic results with minimal scarring
- Helps reduce visible and invisible precancerous changes
- Office-based procedure
Possible Side Effects
- Burning or stinging during light treatment
- Redness
- Swelling
- Crusting or peeling for several days
- Temporary sensitivity to sunlight and bright indoor light
After treatment, you must avoid direct sunlight and bright indoor lighting for approximately 48 hours, as the treated skin remains temporarily light-sensitive.
Typical Treatment
Many patients achieve excellent results with one or two treatments, although additional sessions may be recommended depending on the amount of sun damage or the condition being treated.
Photodynamic therapy is highly effective for treating precancerous lesions and widespread sun damage but is not appropriate for most skin cancers.