Medical Definition of PUVA
: treatment for psoriasis that involves the administration of psoralen to photosensitize the skin followed by exposure to UVA radiation <Clearing of psoriasis usually requires about 24 PUVA treatments, and remissions typically last from 3 to 6 months.—Robert S. Stern, The New England Journal of Medicine, 16 Aug. 2007>
Origin and Etymology of puva
psoralen ultraversusiolet A
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