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The frequencies of positive results and associated allergens vary by country; therefore, it is necessary to know the information specific to each country.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>To establish the frequency of positive photopatch test results, and their relevance, in patients with suspected photoallergic contact dermatitis in a national dermatology centre located in Bogota, Colombia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>One hundred patients investigated for possible photoallergic contact dermatitis were enrolled in the study. They were photopatch tested with a selected group of allergens, and occluded for 48 hours; the duplicate right\u2010hand panel was irradiated with 5 J\/cm<jats:sup>2<\/jats:sup> ultraviolet (<jats:styled-content style=\"fixed-case\">UV)A<\/jats:styled-content>. The readings were performed on day (D)2, <jats:styled-content style=\"fixed-case\">D4<\/jats:styled-content>, and <jats:styled-content style=\"fixed-case\">D6<\/jats:styled-content>, in accordance with the guidelines of the <jats:styled-content style=\"fixed-case\">ICDRG<\/jats:styled-content>, and the relevance was evaluated with the <jats:styled-content style=\"fixed-case\">COADEX<\/jats:styled-content> system.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There were a total of 20 photopatch reactions in 15 patients, 95% of which were caused by <jats:styled-content style=\"fixed-case\">UV<\/jats:styled-content> filters, most frequently benzophenone\u20103 (55%). Eight of the positive reactions (53.3%) appeared on <jats:styled-content style=\"fixed-case\">D6<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p><jats:styled-content style=\"fixed-case\">UV<\/jats:styled-content> filters continue to be the most common causes of photoallergic contact dermatitis in our patients. Readings up to <jats:styled-content style=\"fixed-case\">D6<\/jats:styled-content> (96 h after irradiation) are important to identify delayed positive reactions.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cod.12421","type":"journal-article","created":{"date-parts":[[2015,6,18]],"date-time":"2015-06-18T11:22:09Z","timestamp":1434626529000},"page":"11-17","source":"Crossref","is-referenced-by-count":21,"title":["Photopatch testing in Bogota (Colombia): 2011\u20132013"],"prefix":"10.1111","volume":"74","author":[{"given":"Martha C.","family":"Valbuena Mesa","sequence":"first","affiliation":[{"name":"Photodermatology Unit Centro Dermatologico Federico Lleras Acosta (Colombian National Institute of Dermatology)  111511 Bogota D.C. 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