What are the prognostic factors for polymyositis?

Updated: Feb 12, 2018
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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Poor prognostic factors include the following:

  • Advanced age

  • Female sex

  • African-American race

  • Interstitial lung disease

  • Presence of anti-Jo-1 (lung disease) and anti-SRP antibodies (severe muscle disease, cardiac involvement)

  • Associated malignancy

  • Delayed or inadequate treatment

  • Dysphagia, dysphonia

  • Cardiac and pulmonary involvement

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