Allergic granulomatous angiitis (AGA) - Churg-Strauss syndrome. is a rare autoimmune disease characterized by three distinct clinical phases prodromal. eosinophilic. and vasculitic. https://www.aitsglobal.com/product-category/%d7%90%d7%91%d7%99%d7%96%d7%a8%d7%99-%d7%90%d7%95%d7%a4%d7%a0%d7%94/