Table 2. Commonly known etiologies of LCV.

TNF - tumor necrosis factor, LCV - leukocytoclastic vasculitis.

Group of etiology	Individual entity
Infections	Staphylococcus aureus; Neisseria; chlamydia; mycobacterium; human immunodeficiency virus; chronic hepatitis B infection; chronic hepatitis C infection; syphilis
Drugs	Vancomycin; sulfonamides; beta-blockers; erythromycin; beta-lactams; furosemide; thiazides; gold; amiodarone; non-steroidal anti-inflammatory drugs (NSAIDs); TNF-alpha inhibitors; selective serotonin reuptake inhibitors; warfarin; valproate; metformin; allopurinol
Systemic diseases	Sjogren syndrome; systemic lupus erythematosus; inflammatory bowel disease
Tumors	Lymphomas