Temporal Arteritis

Pictures & Images

See all Pictures & Images

Overview, Causes, & Risk Factors

Giant cell, cranial, or temporal arteritis occurs when there is inflammation and necrosis (death of the tissues) of one or more arteries. It most commonly occurs in the head, especially in the temporal arteries that branch from the carotid artery of the neck. However, it can be systemic, affecting multiple medium-to-large sized arteries anywhere in the body.

The cause is unknown but is assumed to be, at least in part, an effect of the immune response. The disorder has been associated with severe infections and high doses of antibiotics. The symptoms occur because of inflammation.

The disorder may exist independently or may coexist with or follow polymyalgia rheumatica (a disorder characterized by abrupt development of pain and stiffness in the pelvis and shoulder muscles). About 25% of people with giant cell arteritis also experience polymyalgia rheumatica.

Giant cell arteritis is seen almost exclusively in those over 50 years old, but may occasionally occur in younger people. It is rare in people of African descent. There is some evidence that it runs in families.

Today's Top News Stories
•	Falls Are Top Cause of Injury, Death Among Elderly - Jul 19, 2008, 09:00 Not all homes are the same, but common sense measures can reduce the risk, expert says.
•	Heart Blood Vessels Grown in the Lab - Jul 18, 2008, 19:00 Could offer a future alternative to bypass surgery, researchers say.
•	Clinical Trials Update: July 18, 2008 - Jul 18, 2008, 09:24 Breast Cancer Hot Flashes Emphysema
•	Loud Music in Bars Hastens Drinking - Jul 18, 2008, 16:00 French researchers say blasting tunes makes patrons down more alcohol in less time.
•	Breast-Fed Babies Have Fewer GI Infections - Jul 18, 2008, 17:00 But they're more likely to be iron-deficient, study finds.