All are true about Giant cell arteritis except -
It is the most common form of systemic vasculitis in adults, is an acute and chronic, often granulomatous, inflammation of arteries of large to small size.
It affects principally the arteries in the head-especially the temporal arteries — but also the vertebral and ophthalmic arteries and the aorta, where it may cause thoracic aortic aneurysm
Involves large to small sized arteries
Granulomatous inflammation
Most commonly involved artery is abdominal aorta
Segmental nature of the involvement