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Lasers and Emerging Light Technology in the Treatment of Psoriasis

Kelly KyungHwa Park, MD1, Rebecca C Tung, MD2, and John Koo, MD1

Psoriasis is a common chronic, inflammatory condition that is often challenging to treat. Since the advent oflaserand light technology in medicine, the use of these modalities in dermatological conditions has expanded, including their use in the treatment of psoriasis. Lasers and light sources can be classified by the part of the electromagnetic spectrum they utilize. This includes ultraviolet (UV) light, such as the excimer laser and light emitting diodes (LED); visible light, which includes the pulsed dyelaser, diodelaser, and LED; and infrared light, which is utilized by carbon dioxide and erbium-doped yttrium aluminium garnet lasers. Thus far, the 308-nm excimer laser has been shown to have significant clinical efficacy, and the available treatment considerations of using the excimer laser in patients with psoriasis will be addressed in this article. In addition, UVB lamps, LED, and diode lasers are upcoming light technologies that are showing promise in psoriasis therapy. Adv Psor Inflamm Skin Dis 2011;2(4):132–8.

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