Photodynamic Therapy (PDT)

Photodynamic therapy (PDT) is a treatment that uses a light-sensitive drug (photosensitizer) and a special light source to destroy abnormal cells. It is used for certain skin cancers, precancerous lesions, and some internal cancers.

• Avoid sun exposure and bright indoor light before and after treatment, as the drug makes your skin sensitive.
• Follow instructions on fasting or medication adjustments if PDT targets internal organs.
• Inform your provider of other health conditions and medications.

A photosensitizing drug is applied to the skin or injected into a vein. After an incubation period, a special light is directed to the area, activating the drug to destroy abnormal cells. You may feel warmth, tingling, or mild discomfort during the procedure. Sessions last 15–90 minutes, depending on the treatment site.

• Redness, swelling, or blistering at the treatment site.
• Temporary increased sensitivity to light.
• Rare scarring or skin color changes.

The treated area may crust or peel before healing. Follow-up visits are scheduled to check effectiveness and repeat sessions if needed. Your doctor will advise on skincare and sun protection after treatment.