{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T07:39:11Z","timestamp":1780472351779,"version":"3.54.1"},"reference-count":33,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2005,12,12]],"date-time":"2005-12-12T00:00:00Z","timestamp":1134345600000},"content-version":"vor","delay-in-days":3055,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis &amp; Rheumatism"],"published-print":{"date-parts":[[1997,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Objective<\/jats:italic>. To determine, in a case\u2010control study, if patients with new\u2010onset juvenile dermatomyositis (juvenile DM) have increased symptoms prior to onset, exposure to certain environmental conditions, frequency of familial autoimmune diseases, or antibody titers, compared with 2 control groups.<\/jats:p><jats:p><jats:italic>Methods<\/jats:italic>. A structured interview with the families of 80 children with juvenile DM, 40 children with juvenile rheumatoid arthritis (JRA), or 23 healthy children, from the same geographic area as the children with juvenile DM, was conducted. All children's sera were tested for antibody to <jats:italic>Toxoplasma gondii<\/jats:italic>, herpes simplex virus (HSV), or coxsackievirus B (CVB).<\/jats:p><jats:p><jats:italic>Results<\/jats:italic>. A high proportion of children with juvenile DM had constitutional symptoms 3 months before the disease\u2010onset date (<jats:italic>P<\/jats:italic> = 0.013 versus control children). Children with JRA had more relatives with rheumatoid arthritis (<jats:italic>P<\/jats:italic> = 0.0001) and pernicious anemia (<jats:italic>P<\/jats:italic> = 0.003) than did children with juvenile DM or healthy children. Among children \u2a7d7 years of age, elevated enteroviral titers were more frequent in those with juvenile DM (81%) and in healthy controls (90%) than in those with JRA (64%), suggesting a common environmental exposure. Titers to <jats:italic>T gondii<\/jats:italic>, HSV, or CVB 1\u20106 were normal.<\/jats:p><jats:p><jats:italic>Conclusion<\/jats:italic>. Frequencies of familial autoimmune disease, exposure to environmental factors, or elevated antibody titers to <jats:italic>T gondii<\/jats:italic>, HSV, or CVB are not increased in juvenile DM. Children with juvenile DM do have symptoms of illness 3 months before the disease\u2010onset date, and young patients have elevated enteroviral titers, as do young geographic controls.<\/jats:p>","DOI":"10.1002\/art.1780400822","type":"journal-article","created":{"date-parts":[[2007,2,14]],"date-time":"2007-02-14T12:40:26Z","timestamp":1171456826000},"page":"1526-1533","source":"Crossref","is-referenced-by-count":57,"title":["New\u2010onset juvenile dermatomyositis. 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