Also referred to as Churg-Strauss Syndrome (CSS). A disease characterized by blood vessel inflammation, which in turn can constrict blood flow to organs and tissues causing damage. Eosinophils are part of the inflammatory process in this disease. This eosinophilic reaction and asthma are the hallmarks of the disease. People may also suffer from sinus problems, neuropathy, rashes, and gastrointestinal issues.