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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.
The other type of âUVâ therapy is known as PUVA, and is a combination of the UVA part of the spectrum and a chemical called psoralen (this is where the âpâ in PUVA comes from). UVA light is not useful in treating psoriasis on its own, and so psoralen is needed to make the skin more sensitive to it.