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What is the most common vasculitis in the elderly?

Giant cell arteritis (GCA) is the most frequent form of systemic vasculitis in people over 50, with a prevalence of 0.2% in this age group. Also known as temporal arteritis, this condition involves inflammation of medium-to-large-sized blood vessels, with symptoms ranging from new-onset headaches to visual disturbances. Understanding what is the most common vasculitis in the elderly is vital for early diagnosis and treatment to prevent serious complications like blindness or stroke.