RT Book, Section A1 Serling-Boyd, Naomi A1 Stone, John H. A2 Stone, John H. SR Print(0) ID 1180197506 T1 Polyarteritis Nodosa T2 Current Diagnosis & Treatment: Rheumatology, 4e YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781259644641 LK accessmedicine.mhmedical.com/content.aspx?aid=1180197506 RD 2024/04/25 AB Subacute onset of constitutional complaints (fever, weight loss, malaise, arthralgias), lower extremity nodules and ulcerations, mononeuritis multiplex, and postprandial pain are hallmarks of polyarteritis nodosa (PAN).Cutaneous PAN is a variant of the systemic disease in which vasculitis is limited to the skin and often presents with painful nodules, livedo racemosa, or cutaneous ulcerations.Patients with PAN should be evaluated for hepatitis B, though hepatitis B virus-associated PAN has decreased in incidence and is now only responsible for less than 10% of cases.Angiography may reveal microaneurysms in the kidneys or gastrointestinal tract.Biopsies of the skin and peripheral nerves (with sampling of the adjacent muscle) are the least invasive ways of confirming the diagnosis histopathologically.