Photodynamic Therapy with "Blu" Light affords rapid treatment of precancerous lesions called actinic keratoses. The treatment is done in the office.
First, the treatment area is thoroughly cleansed. Then a medication called 5-Amino Levulanic Acid is applied to the area to be treated. Next, the medicine is allowed to incubate for a period ranging from one hour to overnight. This allows the medication to be absorbed into pre-cancerous cells. Finally, the treatment area is exposed to the "Blu" light for 16 minutes. The light activates the medicine, which then selectively destroys the precancerous tissue. During light exposure, the patient will experience stinging, which can be minimized by blowing cool air across the treated surface.
After treatment, the area is red for 1-2 weeks. Patients should avoid sun exposure for 24 hours. The treatment is typically repeated 2-3 months later. The duration of clearance of AK's can be years.