What are the typical EMG results in polymyalgia rheumatica (PMR)?

Updated: Sep 03, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

In typical cases of PMR without vasculitic involvement of the peripheral nervous system, electromyographic (EMG) results are normal. Mild EMG abnormalities in an elderly patient that suggest a mild peripheral neuropathy are generally unrelated to PMR or vasculitis. Erythrocyte sedimentation rate (ESR) elevation (40-50 mm/h via Westergren method) is typically found, with a rapid response to small doses of corticosteroids (prednisone 10 mg/d).


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