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What is the treatment difference between UVA and UVB?

April 26, 2017difference treatment UVa UVB

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What is the treatment difference between UVA and UVB?

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• UVA for psoriasis is most commonly used with the drug psoralen (a photosensitizing agent) in PUVA (Psoralen + UVA) therapy. Without psoralen, UVA’s efficiency is very low compared to UVB. UVB is very effective in the treatment of psoriasis. It has been used for decades and does not require photosensitizing medications to produce effects. UVB is about 1,000 times more effective than UVA (without psoralen) in treating psoriasis.