PROBLEM TO BE SOLVED: To obtain a medicine for preventing and/or treating vasculitis syndromes.SOLUTION: The prophylactic and/or therapeutic agent for vasculitis syndrome comprises a diacylglycerol as an active ingredient. The vasculitis syndrome is ANCA-associated vasculitis in the prophylactic and/or therapeutic agent.COPYRIGHT: (C)2007,JPO&INPIT【課題】血管炎症候群を予防及び/又は治療する薬剤を提供すること。【解決手段】ジアシルグリセロールを有効成分とする血管炎症候群予防及び/又は治療剤。【選択図】なし