How often are polymyalgia rheumatica (PMR) and giant cell arteritis (GCA) (temporal arteritis) comorbid?

Updated: Sep 03, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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PMR often coexists with GCA. In some series, 10-15% of patients with pure PMR had associated GCA based on temporal artery biopsy findings. Conversely, 50-70% of patients with GCA had associated PMR. No difference is evident in the degree of ESR elevation, the presence of minor visual symptoms, sex, age, or the duration of symptoms between patients with PMR and GCA and those with PMR only; furthermore, approximately 10% of patients with PMR and localized temporal artery signs have negative biopsy findings.

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