What is the etiology of giant cell arteritis (GCA) (temporal arteritis)?

Updated: Sep 03, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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The exact etiology of giant cell arteritis (GCA) remains unknown. Despite increased understanding of the inflammatory cascade responsible for the disease process, the initial event that triggers the cascade remains uncertain. Genetic, environmental, and autoimmune factors have been identified.

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