Photo-Therapy FAQ

PUVA is an excellent skin care treatment for patients with chronic, stubborn conditions such as psoriasis, vitiligo and eczema. 

PUVA is a treatment method which involves exposure of the skin to an ultraviolet “A” light. Ultraviolet A light produces relatively little effect when used alone. A drug called psoralen, when taken orally or applied directly to the skin, increases the sensitivity of the skin to ultraviolet “A” light, thus enhancing its beneficial effect. The combination of psoralen and ultraviolet “A” light is called PUVA.

Ultraviolet “A” light is delivered by specialized units lined with columns of lamps.  The first exposure will last only seconds. Exposure time will be slowly increased according to response. Within two or three months, as the skin clears, a maintenance schedule will be assumed.