Natural Daylight Photo Dynamic Therapy (PDT) is a simple, non-invasive procedure that can be used to treat pre-cancerous skin lesions. A cream is applied to the skin, which is activated by the photodynamic therapy. This destroys abnormal cells but doesn’t affect healthy tissue.
Who is PDT for?
PDT can be suitable for patients who have large areas of sun-damaged skin or have been diagnosed with pre-cancerous skin lesions called actinic keratoses or Bowen’s disease.
An alternative to this treatment is conventional photodynamic therapy (PDT). However, some patients struggle with the discomfort associated with this.
A member of the team often applies a sunscreen (SPF 30 or greater) to the treatment area. This protects your skin for ultraviolet light but will not block day light. It takes approximately 20 minutes for the sunscreen to be absorbed into the skin.
Your lesion(s) are prepared by cleaning the skin and gently removing any crusting. Cream will be applied and then you will need to leave the area uncovered.
You will wait about 30 minutes before daylight exposure begins. Following this, you will then be in daylight for two hours.
The main side effect is that you may experience mild tingling or pain in the treated area. This can be reduced by the use of a water spray to soothe any sensation of discomfort.