What are the causes of vasculitis?
 1 Allopurinol. 2 Behcet's disease. 3 C1 esterase inhibitor (C1-INH) deficiency. 4 Cefaclor. 5 Cholesterol embolism. 6 Churg-Strauss 1 syndrome. 7 Degos' disease. 8 Factor H 1 deficiency. 9 Granulocyte colony stimulating factor. 