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What is PUVA? PUVA or photochemotherapy is a type of ultraviolet radiation treatment (phototherapy) used for severe skin diseases. PUVA is a combination treatment which consists of Psoralens (P) and then exposing the skin to UVA (long wave ultraviolet radiation). It has been available in its present form since 1976.
PUVA therapy [ p soralen + u ltra v iolet A ], a form of photochemotherapy for skin disorders such as psoriasis and vitiligo; oral psoralen administration is followed two hours later by exposure to ultraviolet a radiation.ulp canal therapy root canal therapy. PUVA therapy [ p soralen + u ltra v iolet A ], a form of photochemotherapy for skin disorders such as psoriasis and vitiligo; oral psoralen administration is followed two hours later by exposure to ultraviolet a radiation. radiation therapy see radiation therapy.