How is corticosteroid myopathy differentiated from reactivation of polymyositis?

Updated: Feb 12, 2018
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

Corticosteroid myopathy can occur during the course of treatment and must be distinguished from reactivation of muscle disease. The CK level is usually within reference ranges in patients with steroid myopathy. No improvement is observed with raised doses of steroids; rather, the condition worsens if the dose is increased.


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