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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.
Kava is the dried rhizome and roots of P. methysticum. Kava is a large shrub widely cultivated in many Pacific islands, including Hawaii, Tahiti, and New Guinea. Many cultivated varieties of kava are known. The active principles are known as kavalactones.