Which conditions should be included in the differential diagnoses of polymyositis?

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

Conditions to consider in the differential diagnosis of polymyositis include the following:

  • Hypokalemia
  • Hypophosphatemia
  • Hypothyroidism
  • Myasthenia gravis
  • Myopathies
  • Inclusion body myositis
  • Eosinophilic myositis
  • Myositis ossificans
  • Focal myositis
  • Giant cell myositis
  • Diabetic polyradiculopathy
  • Metabolic myopathy
  • Muscular dystrophy
  • Myasthenia gravis
  • Overlap connective-tissue diseases

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