Acronym for oral administration of psoralen and subsequent exposure to long wavelength ultraviolet light (uv-a); used to treat psoriasis. ... (05 Mar 2000) ... 
Type: Symbol Definitions: 1. Acronym for oral administration of psoralen and subsequent exposure to long-wavelength ultraviolet light (uv-a); used to treat psoriasis.
PUVA: PUVA stands for psoralen (P) and ultraviolet A (UVA) therapy in which the patient is exposed first to psoralens (drugs containing chemicals that react with ultraviolet light) and then to UVA light. PUVA is used to treat vitiligo (white patches on the skin). It is time-consuming and care must be taken to avoid side effects, which can sometimes...
Psoralen UV A (photochemical ultraviolet light A waves)
a form of phototherapy that combines the use of psoralens and ultraviolet light to treat skin disorders 
a therapy for psoriasis combining the oral drug psoralen and high-intensity long-wave ultraviolet light.