Giant cell arteritis

Giant cell arteritis is a form of vasculitis characterized by inflammation of large and medium-sized arteries, predominantly affecting the temporal arteries, leading to headaches, scalp tenderness, and visual disturbances. It is clinically significant due to its potential to cause irreversible vision loss if not promptly treated with corticosteroids. A key association is its strong correlation with polymyalgia rheumatica, a condition presenting with muscle pain and stiffness.