Photodynamic therapy is a revolutionary two-step process to treat several skin diseases including actinic keratosis (pre-cancerous lesions) and some skin cancers.
Photodynamic therapy specifically treats the abnormal skin cells while leaving normal surrounding skin cells unaffected. Multiple lesions are simultaneously treated at each session and treatment may also prevent the development of new lesions.
In the first step, a photosensitizing cream is applied to the skin and is taken up by the targeted cells. Light source exposure activates the light sensitive compound to eliminate the targeted cells, such as cancerous or precancerous cells. During treatment minor pain is often experienced which is an indication that the desired reaction is taking place.