Causes of peripheral nervous system (PNS) vasculitis
| A primary immune-mediated vasculitic process | ANCA associated | Wegener's granulomatosis, Churg–Strauss syndrome, polyarteritis nodosa and microscopic polyangiitis |
| Immune complex driven | Henoch-Schönlein purpura and essential cryoglobulinaemic vasculitis | |
| A vasculitic process resulting from other types of autoimmune conditions | Rheumatoid arthritis, systemic sclerosis, Sjögren's syndrome, essential cryoglobulinaemia | |
| A vasculitic process resulting from other non-autoimmune conditions | Diabetes | Diabetic radiculoplexus neuropathy |
| Drugs | Amphetamine, propylthiouracil, hydralazine, interferons, non-steroidal anti-inflammatory drugs, penicillin, allopurinol, cocaine, heroin, sulfonamides and phenytoin | |
| Viral infections | Cytomegalovirus, human T-lymphotropic virus 1, hepatitis, human immunodeficiency virus, Herpes simplex virus, Varicella zoster virus, Epstein-Barr virus, cytomegalovirus | |
| Bacterial infections | Infective endocarditis, Strep pneumoniae, Haemophilus influenzae, Salmonella typhi, alpha haemolytic strep, Lyme, Mycobacterium tuberculosis, leprosy, Treponema pallidum | |
| Fungal infections | Aspergillus, coccidoides, mucormycosis, histoplasma capsulatum | |
| Protozoa infections | Toxoplasma gondii, Plasmodium falciparum | |
| Radiation | ||
| Paraneoplastic | ||
| Malignancy | ||
| Chronic inflammatory | Sarcoidosis |
ANCA, antineutrophil cytoplasmic antibody.