Vasculitic processes encountered in human immunodeficiency virus (HIV) positive patients
| I Infective |
| Cytomegalovirus, herpes zoster virus, toxoplasma, pneumocystis, salmonella, tuberculosis, direct HIV infection |
| II Necrotising systemic |
| Polyarteritis nodosa-like, non-specific necrotising |
| III Hypersensitivity |
| Leucocytoclastic, eosinophilic, Churg-Strauss, Henoch-Schonlein, Behcet's, drug induced, cryoglobulinaemia, relapsing polychondritis, erythema nodosum, erythema elevatum diutinum |
| IV Angiocentric immunoproliferative lesions |
| Benign lymphocytic angiitis, lymphomatoid granulomatosis, angiocentric lymphoma |
| V Primary angiitis of the central nervous system |
| VI Large vessel vasculopathy |
| Related to infection or leucocytoclastic vasculitis of vasa vasora |
| VII Miscellaneous |
| Non-specific vasculitides not fitting into the above categories |