Giant Cell Arteritis

Giant cell arteritis (GCA) is a type of vasculitis, a group of diseases whose main feature is inflammation of blood vessels. In GCA, the vessels most often involved are the arteries of the scalp and head, especially the arteries over the temples, which is why another term for GCA is “temporal arteritis.” GCA can overlap with polymyalgia rheumatica (PMR). At some point, 5 – 15% of patients with PMR will have a diagnosis of GCA. About 50 percent of patients with GCA have symptoms of PMR. The two conditions may occur at the same time or on their own. It also affects the same types of patients as does PMR. It occurs only in adults, usually over age 50, in women more than men, and in whites more than non-whites.

The information in the diseases and conditions fact sheets is for general education only. Please consult your rheumatologist for medical advice, diagnosis, and treatment of your unique medical condition. To learn more about GCA and up to date guidance, please visit American College of Rheumatology from the following link. 

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