psoralen(redirected from Puva therapy)
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Any of a group of chemical compounds found in certain plants, used to treat psoriasis and vitiligo.
[From New Latin Psōralea, plant genus, from Greek psōralea, neuter pl. of psōraleos, mangy (from the appearance of the plants' leaves), from psōrā, itch.]
(Pharmacology) any of various naturally occurring photoreactive chemicals, found in some plants, some of which are used in the treatment of skin disorders such as psoriasis and vitiligo.