Churg-Strauss syndrome is a rare disease with systemic vasculitis and hypereosinophilia. It is accompanied by allergic rhinitis and asthma. Herein, we present a case of Churg-Strauss syndrome in a family medicine outpatient clinic. This report aimed to emphasize that if patients diagnosed with asthma have cough and/or hemoptysis that cannot be controlled despite interventions such as inhalation, corticosteroid therapy, montelukast treatment, and anti-histamine therapy, vasculitic diseases involving the lung may be considered.