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There are many types of vasculitis treated by rheumatologists. Vasculitis is inflammation of the blood vessels, and large, medium and small blood vessels can all be affected. The most common vasculitis is giant cell arteritis, also called temporal arteritis. Giant cell arteritis causes inflammation of branches of blood vessels that start in the neck and travel to the head. Symptoms can include headache, vision loss, jaw and arm pain, tenderness over the temporal artery, fever and weight loss. In general, the symptoms of vasculitis depend on which arteries are involved. Patients can experience-in addition to fatigue, fever and weight loss-muscle weakness, abdominal pain, joint pain, rash, nerve problems and kidney problems.