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How does psoriasis laser treatment work?

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Excimer laser treatments are performed in the dermatologist's office. Each session takes only a few minutes. During the treatment, the doctor aims the laser directly at patches of psoriasis. You might feel some warmth at the site or a snapping sensation against the skin.

Excimer lasers aim a high-intensity ultraviolet B (UVB) light dose of a very specific wavelength -- 308 nanometers -- directly at the psoriasis plaques. Because the laser light never touches the surrounding skin, it reduces the risk of UV radiation exposure. Excimer lasers are used to treat mild-to-moderate psoriasis; people usually have 2 sessions a week for 4 to 10 sessions to get results.

Your doctor will determine your dose of laser light based on the thickness of your psoriasis plaques and your skin color (a lower dose is used on lighter skin). During the procedure, you will be given dark goggles to protect your eyes.

From: Laser Treatment for Psoriasis WebMD Medical Reference

SOURCES: National Psoriasis Foundation: "Phototherapy." de Leeuw, J. , February 2006; vol 54: pp 266-271. News release, American Academy of Dermatology. Hruza G.J. , 2005; vol 4. Talbjee, S.M. , November 2005; vol 153: pp 960-966. Brubb B. , December 2008. Gerber, W. , December 2003; vol 149: pp 1250-1258. Trehan, M. , November 2002; vol 45: pp 701-708.







Journal of the American Academy of DermatologyJournal WatchBritish Journal of DermatologyJournal of the American Academy of Physician AssistantsBritish Journal of DermatologyJournal of the American Academy of Dermatology

Reviewed by Nayana Ambardekar on June 29, 2019

SOURCES: National Psoriasis Foundation: "Phototherapy." de Leeuw, J. , February 2006; vol 54: pp 266-271. News release, American Academy of Dermatology. Hruza G.J. , 2005; vol 4. Talbjee, S.M. , November 2005; vol 153: pp 960-966. Brubb B. , December 2008. Gerber, W. , December 2003; vol 149: pp 1250-1258. Trehan, M. , November 2002; vol 45: pp 701-708.







Journal of the American Academy of DermatologyJournal WatchBritish Journal of DermatologyJournal of the American Academy of Physician AssistantsBritish Journal of DermatologyJournal of the American Academy of Dermatology

Reviewed by Nayana Ambardekar on June 29, 2019

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What levels of psoriasis can laser sessions treat?

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