Are giant cell arteritis (GCA) (temporal arteritis) and polymyalgia rheumatica related disorders?

Updated: Sep 10, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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A close relationship exists between GCA and polymyalgia rheumatica. [23, 24, 25]  About 50% of patients with GCA have underlying polymyalgia rheumatica, and about 15% of individuals with polymyalgia rheumatica develop GCA. The precise nature of this association is poorly understood. Several authors have suggested that these 2 diseases are actually different stages of the same disease process.

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