{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:39:48Z","timestamp":1787013588662,"version":"build-2736575974"},"reference-count":15,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2016,10,5]],"date-time":"2016-10-05T00:00:00Z","timestamp":1475625600000},"content-version":"vor","delay-in-days":4,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Dermatology"],"published-print":{"date-parts":[[2016,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Differentiation between psoriatic arthritis (PsA) sine psoriasis and rheumatoid arthritis (\n                    <jats:styled-content style=\"fixed-case\">RA<\/jats:styled-content>\n                    ) may be a challenge, especially in the early stages, hence the need for new instrumental markers to assist their diagnosis. In this study, we investigated possible dermoscopic differences in vascular appearance of nail fold and elbow (a classic site of repeated trauma) in these two conditions. Fifteen patients with PsA sine psoriasis, 12 patients with\n                    <jats:styled-content style=\"fixed-case\">RA<\/jats:styled-content>\n                    and 12 controls were included in the study. Regarding the nail fold vascular appearance in PsA sine psoriasis and\n                    <jats:styled-content style=\"fixed-case\">RA<\/jats:styled-content>\n                    cohorts, the presence of diffuse reddish background with or without sparse dotted vessels was significant in the former, whereas the evidence of parallel dotted\/short linear vessels (\u201cfish school\u2010like\u201d pattern) or irregular\/ramified, blurry, purple vessels were significant in the latter; none of these patterns were detected in the control group. Regarding the elbow, the pattern significantly associated with PsA sine psoriasis consisted of diffusely distributed, red, dotted vessels. On the other hand,\n                    <jats:styled-content style=\"fixed-case\">RA<\/jats:styled-content>\n                    patients and controls displayed similar dermoscopic findings, with three possible vascular patterns being observed: (i) irregular, blurry, purple vessels; (ii) avascular appearance; and (iii) sparse, dotted, purple vessels. In conclusion, dermoscopy may be a useful supportive tool for differentiating early PsA sine psoriasis from\n                    <jats:styled-content style=\"fixed-case\">RA<\/jats:styled-content>\n                    .\n                  <\/jats:p>","DOI":"10.1111\/1346-8138.13438","type":"journal-article","created":{"date-parts":[[2016,5,30]],"date-time":"2016-05-30T02:56:50Z","timestamp":1464577010000},"page":"1217-1220","source":"Crossref","is-referenced-by-count":24,"title":["Dermoscopy of nail fold and elbow in the differential diagnosis of early psoriatic arthritis sine psoriasis and early rheumatoid arthritis"],"prefix":"10.1111","volume":"43","author":[{"given":"Enzo","family":"Errichetti","sequence":"first","affiliation":[{"name":"Department of Experimental and Clinical Medicine Institute of Dermatology University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alen","family":"Zabotti","sequence":"additional","affiliation":[{"name":"Department of Medical and Biological Sciences Rheumatology Clinic University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giuseppe","family":"Stinco","sequence":"additional","affiliation":[{"name":"Department of Experimental and Clinical Medicine Institute of Dermatology University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luca","family":"Quartuccio","sequence":"additional","affiliation":[{"name":"Department of Medical and Biological Sciences Rheumatology Clinic University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefania","family":"Sacco","sequence":"additional","affiliation":[{"name":"Department of Medical and Biological Sciences Rheumatology Clinic University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ginevra","family":"De Marchi","sequence":"additional","affiliation":[{"name":"Department of Medical and Biological Sciences Rheumatology Clinic University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angelo","family":"Piccirillo","sequence":"additional","affiliation":[{"name":"Department of Dermatology San Carlo Hospital Potenza Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Salvatore","family":"De Vita","sequence":"additional","affiliation":[{"name":"Department of Medical and Biological Sciences Rheumatology Clinic University of Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,10,5]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2012-203158"},{"key":"e_1_2_5_3_1","first-page":"137","article-title":"Early psoriatic arthritis: 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