also referred to as giant cellular arteritis or cranial arteritis, it is a critical infection characterized by irritation for the walls associated with blood vessels (vasculitis). The vessels suffering from infection would be the arteries (therefore the name "arteritis"). Age affected patients is generally over 50 years of age. Large cell arteritis can lead to loss of sight and/or swing. Its detected by a biopsy of an artery. It is addressed with high dose steroids.