Recovery from tanning induced by narrow-band UVB phototherapy in brown-skinned individuals with psoriasis: twelve-month follow-up

Journal of Dermatological Science
In-Ho KwonJai Il Youn

Abstract

Pigmentation induced by narrow-band UVB (NBUVB) phototherapy can cause complaints by psoriasis patients, especially those with brown skin. Nevertheless, the recovery process from tanning after the completion of NBUVB treatment is not known. The purpose of this study was to evaluate the extent of tanning recovery after the end of NBUVB treatment and determine the time required to recover from the fully tanned state. Sixteen psoriasis patients with brown skin were observed. The skin color changes on the lower back were measured before beginning phototherapy, upon completion of NBUVB treatment, and subsequently every month for the first one-half year, then bimonthly for the second one-half year, using two different reflectance spectrophotometers. The results are presented as the erythema index (EI) and melanin index (MI), L*a*b* values as recommended by the Commission Internationale de l'Eclairge, and the individual typology angle (ITA degrees). The mean L* value reached 64.4 by the 10th month after the end of NBUVB treatment, with no significant difference from the value before beginning phototherapy. The mean ITA degrees approximated the initial angle at the 8th month after completing NBUVB treatment with no significant differen...Continue Reading

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Citations

Jun 20, 2014·The Journal of Dermatology·Hyeong Ho RyuSeong Jin Jo
Aug 19, 2014·Photodermatology, Photoimmunology & Photomedicine·Jung Won ShinKyung Chan Park
May 5, 2011·Journal of Biomedicine & Biotechnology·Tsutomu KobayashiMasashi Shiomi
Jun 6, 2013·Oxidative Medicine and Cellular Longevity·Hajime Otani
May 31, 2014·Tuberculosis Research and Treatment·Wei-Teng YangAmita Gupta
Dec 24, 2014·International Journal of Cosmetic Science·D Saint-Léger
Dec 31, 2020·Photodermatology, Photoimmunology & Photomedicine·Trinidad Montero-VilchezSalvador Arias-Santiago
Jul 16, 2019··Majdi KhoudeirTaoufik El Kabir

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