• Peter B. Chansky
  • Lavanya Mittal
  • Cord Sunderkötter
  • Victoria P. WerthEmail author


Dermatomyositis (DM), in addition to polymyositis (PM) and inclusion body myositis, is categorized as an autoimmune inflammatory myopathy. This group of disorders is characterized by the notable features of symmetric proximal skeletal muscle weakness and laboratory findings consistent with muscle inflammation. DM, unique among the group of inflammatory myopathies, also exhibits a set of distinctive and bothersome cutaneous findings and may present with other systemic symptoms such as interstitial lung disease, arthritis, dysphagia, and an increased risk for internal malignancy. Classic DM presents with skin findings, proximal muscle weakness, and laboratory or radiologic evidence of myositis. When DM occurs in the complete absence of muscular symptoms and muscle inflammation, it is known as amyopathic DM (formally DM sine myositis). The presence of DM-related skin signs with subclinical myopathy and borderline evidence of muscle inflammation is known as hypomyopathic DM [1].


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Peter B. Chansky
    • 1
    • 2
  • Lavanya Mittal
    • 1
    • 2
  • Cord Sunderkötter
    • 3
    • 4
  • Victoria P. Werth
    • 5
    Email author
  1. 1.Corporal Michael J. Crescenz Veterans Affairs Medical CenterPhiladelphiaUSA
  2. 2.Department of Dermatology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaUSA
  3. 3.Department of DermatologyMartin-Luther-University of Halle WittenbergHalleGermany
  4. 4.Department of Dermatology and VenerologyUniversitätsklinikum MünsterMünsterGermany
  5. 5.Department of DermatologyPerelman Center for Advanced MedicinePhiladelphiaUSA

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