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Abstract
Phototherapy has been used for the treatment of psoriasis for decades and has been proved effective. Beyond psoriasis, the spectrum of skin diseases found to respond to phototherapy has broadened considerably in recent years. It is used in atopic eczema, eosinophilic pustular folliculitis, urticaria and photodermatoses. Recently there have been changes in the treatment. Other wavebands are being used in phototherapy such as 311 nm, and maintenance therapy is usually applied. Finally, phototherapy is also used for other disorders unrelated to dermatology such as neonatal hyperbilirubinemia.