Photodynamic therapy (PDT) is a newer treatment for skin cancer. PDT uses laser, or other light sources, combined with a light-sensitive drug (sometimes called a photosensitising agent) to destroy cancer cells.

A photosensitising cream will be applied to your skin. You will then need to wait for approximately four to six hours before being treated. Treatment with the light will last 20-45 minutes. Afterwards a dressing will be put on to cover the area and protect it from light. Usually only one treatment is needed, but occasionally two or three further treatments may be given.

Side effects

Pain You will be given a local anaesthetic before your PDT, to prevent any possible pain. For many people this is all that they will need. You may be given a tube of steroid cream to apply to the area if it becomes painful when you are at home.

Sensitivity to light The treated area of skin will be sensitive to daylight and bright, indoor lighting. This effect will probably last for about 24 hours. You will need to keep the treated area of skin covered during this time. After that you can wash, bathe or shower as usual, but you will still need to treat your skin gently and not rub the area until it has healed.

Healing

After PDT, the skin normally heals quickly and without scarring, so its appearance is usually very good.