Polyarteritis nodosa in a patient with AIDS.

A 33-year-old male homosexual with the acquired immunodeficiency syndrome (AIDS) presented with pain, blue colouring and ulceration of fingers and toes. Angiography of the superior mesenteric artery and renal arteries showed vessel wall irregularities and aneurysms, characteristic of polyarteritis nodosa (PAN). We describe this patient because of the possible association between systemic vasculitis and AIDS.