Phototherapy is suitable for inducing remission of psoriasis but not for long-term maintenance of remission. Exposure to both natural sunlight and PUVA increases the risk of developing skin cancer. It is advisable to limit the lifetime number of PUVA treatments given to any one individual to fewer than 200 (or to a cumulative UVA dose of 1500 J/cm2). Patients who have received large doses of oral PUVA require long-term follow up to monitor for the development of skin cancer. NBUVB phototherapy when used three times weekly appears to be of similar efficacy to PUVA and offers a number of advantages over the latter. It may be less likely to increase skin cancer risk, but data to confirm this are not available.
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Do You Suffer From the Itching and Scaling of Psoriasis? Or the Chronic Agony of Psoriatic Arthritis? If so you are not ALONE! A whopping three percent of the world’s populations suffer from either condition! An incredible 56 million working hours are lost every year by psoriasis sufferers according to the National Psoriasis Foundation.