Vasculitis is the inflamation of blood vessels. These inflamations can effect any blood vessel throughout the entire body causing different symptoms and potential complications to the body. The inflamation causes swelling of blood vessels which can cause blockages of blood to different tissues and organs in the body. The walls of affected blood vessels can swell and bulge (this is called an aneurysm) and may even burst, causing internal bleeding. Vasculitus can occur on it's own or with other conditions (these are called primary and secondary vasculitis respectively.
When any part of the body is inflamed it swells up and is uncomfortable or painful. With many types of vasculitis, the swelling is internal and there are no external symptoms visible, which makes it difficult to notice and diagnose. Around 3,000 people in the UK develop vasculitis each year.
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