Systemic Vasculitis

In most cases, the cause is unknown. A combination of factors may put a person at risk of developing systemic vasculitis:

• Other autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus may be risk factors
• Systemic vasculitis can develop as a reaction to certain drugs
• Systemic vasculitis can also develop as a result of infection such as hepatitis B, hepatitis C, human immunodeficiency virus or some infections caused by bacteria