The dermatology is adapting to new needs: a Siena was opened a dermatology clinic specializing in geriatrics, the treatment of skin diseases that are more frequent among the elderly. Prevention, then, but also aesthetic and treatment of common skin problems associated with aging, including ulcers or disorders of pigmentation. Among the techniques used by the laboratory, there is also the photodynamic therapy, which combines the use of light and drugs to treat skin diseases cancerous origin of the drug, which was made sensitive to light, find and neo plastic cells accumulates in them. The ultraviolet rays, irradiated on the cancerous area, which activates the drug only destroys the malignant cells. In ambulatorio is also the appearance of the skin, the dermis-Cosmetology, specializes in correcting imperfections more common as dirt, acne problems or hair and scalp.