Photodynamic therapy (PDT), also known as photoradiation therapy, is a minimally invasive procedure used to treat skin cancer and other conditions such as acne, rosacea and actinic keratosis. PDT uses a topical photo sensitizer called Levulan along with a light energy source to destroy abnormal skin cells. The Levulan is applied to the skin and incubated for a certain amount of time before it is exposed to light energy to activate the medication and destroy the targeted cells.
Most people see successful results from PDT after three treatment sessions spaced two to four weeks apart. This procedure can be combined with other treatments, such as intense pulsed light, in order to maximize results and leave skin as healthy and beautiful as possible.