Granulomatosis with polyangiitis (GPA) is a rare disease which causes the walls of the blood vessels to become inflamed (swollen).

It's a serious condition that can eventually lead to tissue damage and organ failure and can be fatal if left untreated.

However,there are effective treatments which mean most people can live relatively normal lives with the condition.

Until recently, GPA used to be called Wegener's granulomatosis.

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Medically Reviewed by a doctor on 21 Jun 2016