Can polyarteritis have Nodosa?

Polyarteritis nodosa (PAN) is a blood vessel disease characterized by inflammation of small and medium-sized arteries (vasculitis), preventing them from bringing oxygen and food to organs . Most cases occur in the 4th or 5th decade of life, although it can occur at any age.

Why is it called polyarteritis nodosa?

They termed this disorder “periarteritis nodosa” because of the inflammation they observed around the blood vessel wall. The name was changed to polyarteritis nodosa (PAN) to underscore the fact that inflammation throughout the entire arterial wall – not just around the wall – is a major disease feature.