TY - JOUR T1 - Koebner Phenomenon in Juvenile Dermatomyositis JF - The Journal of Rheumatology JO - J Rheumatol SP - 437 LP - 437 DO - 10.3899/jrheum.170885 VL - 45 IS - 3 AU - W. JAMES TIDWELL AU - JEFFREY P. CALLEN Y1 - 2018/03/01 UR - http://www.jrheum.org/content/45/3/437.abstract N2 - Koebner phenomenon is an isomorphic response seen in a variety of dermatoses such as psoriasis. Its key feature is the appearance of a new dermatosis in previously unaffected areas following trauma.An 8-year-old girl presented with several months history of a worsening rash on her hands and face, pruritus, and proximal muscle weakness. At age 4, a diagnosis of juvenile dermatomyositis was first established by the presence of heliotrope rash, … ER -