Churg-Strauss Syndrome, also known as Eosinophilic Granulomatosis with Polyangiitis, is a rare autoimmune condition that causes inflammation of blood vessels, leading to damage in various organs. It primarily affects the lungs, skin, and nerves, and is characterized by the presence of high levels of eosinophils, a type of white blood cell. Symptoms may include asthma, sinusitis, skin rashes, and nerve pain. The exact cause of Churg-Strauss Syndrome is not fully understood, but it is often associated with asthma and certain medications. Early diagnosis and treatment are crucial to manage symptoms and prevent complications.