Polyarteritis Nodosa, also known as periarteritis nodosa, is related to retinal vasculitis and mononeuritis multiplex. An important gene associated with Polyarteritis Nodosa is ADA2 (Adenosine Deaminase 2), and among its related pathways/superpathways are Infectious disease and Innate Immune System. The drugs Alemtuzumab and Cyclophosphamide have been mentioned in the context of this disorder. Affiliated tissues include lung and skin, and related phenotypes are abnormal skin morphology and fever