{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T01:04:01Z","timestamp":1783127041366,"version":"3.54.6"},"reference-count":21,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2022,7,19]],"date-time":"2022-07-19T00:00:00Z","timestamp":1658188800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Cosmetic Dermatology"],"published-print":{"date-parts":[[2022,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Keratosis pilaris is a common keratinization disorder of the extensor surfaces of the proximal extremities. Various treatment modalities reduce symptoms, but their efficacy is limited.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>The aim of this study is to compare the efficiency of Q\u2010Switched Nd: YAG laser and fractional Er: YAG laser.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material\/Method<\/jats:title><jats:p>The lesions in both arms were randomly divided into areas A and B. Fractional Er: YAG 2940\u2009nm laser performed to area A 1.5\u00a0J\/cm<jats:sup>2<\/jats:sup>, spot size 7\u2009mm, frequency 3\u00a0Hz and three passes and Q\u2010Switched Nd: YAG 1064\u2009nm laser performed to Area B, 4\u20136\u00a0J\/cm<jats:sup>2<\/jats:sup> spot size 4\u2009mm, 8\u00a0Hz frequency, and as a single pass. Both lasers were performed in 4 sessions at 3\u2010week intervals. The global improvement scale evaluated treatment responses in dyspigmentation and skin texture.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Twenty patients completed the study, and the mean age of a total of 20 patients was 22.9. There was no significant difference in dyspigmentation and skin texture with global improvement scale between Area A and Area B, respectively (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.078, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.638). In addition, there was no significant difference between patient satisfaction levels after treatment in Area A and Area B (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.868).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The efficiency of the fractional Er: YAG 2940\u2009nm laser was found equal to the Q\u2010switched Nd: YAG 1064\u2009nm laser. Fractional Er: YAG 2940\u2009nm laser may be a new treatment option in the treatment of keratosis pilaris.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jocd.15193","type":"journal-article","created":{"date-parts":[[2022,6,30]],"date-time":"2022-06-30T06:34:36Z","timestamp":1656570876000},"page":"3809-3813","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Comparative study of the efficacy of fractional Er: YAG 2940\u2009nm laser and Q\u2010switched Nd: YAG 1064\u2009nm laser in keratosis pilaris"],"prefix":"10.1111","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1820-885X","authenticated-orcid":false,"given":"Samet","family":"Bayazit","sequence":"first","affiliation":[{"name":"Department of Dermatology and Venerology, Cerrahpa\u015fa Medical Faculty \u0130stanbul, University\u2010Cerrahpa\u015fa  \u0130stanbul 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