Summary Summary. 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.What are the treatment options for polyarteritis?
Polyarteritis is a serious illness that can be fatal. Treatment is directed toward decreasing the inflammation of the arteries by suppressing the immune system.Is polyarteritis nodosa (PAN) a collagen disease?
Polyarteritis nodosa (PAN) has sometimes been referred to as a "collagen disease" or a "collagen vascular disease.". Historically, the term "collagen vascular disease" has been used to describe similar autoimmune disorders associated with inflammation of the connective tissues (including the arteries).